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Concentrations of gaseous pollutants and particulate compounds over Northwestern Europe and nitrogen deposition into the North and Baltic Sea in 2008

The concentrations and deposition of atmospheric constituents such as air pollutants were modeled with the Community Multiscale Air Quality (CMAQ) Model system for the year 2008. A focus was on sea salt emissions, atmospheric sea salt concentrations and the interaction between sea salt particles and atmospheric nitrogen compounds. For this purpose, two model runs with different realistic sea salt emission parameterizations were performed and are provided here. The model run CMAQ_CD24_seasalt_base uses the default sea salt emission parameterization of CMAQ denoted as GO03. The model run CMAQ_CD24_seasalt_ov14 uses an alternative sea salt emission parameterization denoted as OV14. Please refer to the connected references for information on the two sea salt emission parameterizations and their implementation.


The dataset also contains meteorological input parameters in order to allow the user to perform unit conversions for some model variables. Additionally, the land-sea mask and land fraction data per model grid cell are provided.


The projection is a Lambert Conformal Conic projection. The parameters are given in the netCDF files.

  • Identification
  • Distribution
  • Quality
  • Spatial rep.
  • Ref. system
  • Content
  • Portrayal
  • Metadata
  • Md. constraints
  • Md. maintenance
  • Schema info

Identification

Data identification

Citation

Date (Publication)
2017-12-08
Edition

1

Citation identifier
CMAQ_CCLM_HZG_2008
Citation identifier
doi:10.1594/WDCC/CMAQ_CCLM_HZG_2008
Principal investigator
  Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH - Dr. Armin Aulinger
not filled
Principal investigator
  Leibniz-Institut für Ostseeforschung Warnemünde - Dr. Daniel Neumann
https://www.io-warnemuende.de/
Principal investigator
  Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH - Dr. Johannes Bieser
not filled
Principal investigator
  Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH - Volker Matthias
not filled
Author
  Leibniz-Institut für Ostseeforschung Warnemünde - Dr. Daniel Neumann
https://www.io-warnemuende.de/
Author
  Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH - Volker Matthias
not filled
Author
  Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH - Dr. Johannes Bieser
not filled
Author
  Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH - Dr. Armin Aulinger
not filled
Publisher
  WDC Climate at DKRZ
Point of contact
  Max Planck Institute for Meteorology - Volker Matthias
http://www.mpimet.mpg.de/

Format

Name

NetCDF

Keywords
  • aerosol

Keywords
  • air pollution

Keywords
  • air quality

Keywords
  • atmospheric chemistry

Keywords
  • chemistry transport modeling

Keywords
  • coastdat

Keywords
  • sea salt

Use limitation

CC-BY-4.0: Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/

Language

eng; USA

N
S
E
W
thumbnail


Begin date
2008-01-01
End date
2008-12-31
 

Distribution

Distribution

Distribution format
  • NetCDF ()

Digital transfer options

Transfer size
12459
OnLine resource
https://www.wdc-climate.de/ui/entry?acronym=CMAQ_CCLM_HZG_2008
 

Quality

Data quality

Hierarchy level
collection

Completeness commission

Name of measure

n/a

Measure description

None

Non quantitative attribute accuracy

Name of measure

n/a

Measure description

None

 

Content

Coverage Description

Attribute description
tendency_of_atmosphere_mass_content_of_reduced_nitrogen_compounds_expressed_as_nitrogen_due_to_dry_deposition
Descriptor

"Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_of_atmosphere_layer" are used. "tendency_of_X" means derivative of X with respect to time. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Dry deposition" is the sum of turbulent deposition and gravitational settling. "Reduced nitrogen compounds" means all chemical species containing nitrogen atoms with an oxidation state less than zero. Usually, particle bound and gaseous nitrogen compounds, primarily ammonium (NH4+) and ammonia (NH3), are included. The list of individual species that are included in this quantity can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. [CF-Standard Name]; unit: kg m-2 s-1

Coverage Description

Attribute description
air_density
Descriptor

[CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
humidity_mixing_ratio
Descriptor

Humidity mixing ratio of a parcel of moist air is the ratio of the mass of water vapor to the mass of dry air. [CF-Standard Name]; unit: 1

Coverage Description

Attribute description
air_pressure
Descriptor

air_pressure [CF-Standard Name]; unit: Pa

Coverage Description

Attribute description
mass_concentration_of_nitric_acid_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for nitric acid is HNO3. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
lwe_thickness_of_convective_precipitation_amount
Descriptor

lwe_thickness_of_convective_precipitation_amount [CF-Standard Name]; unit: m

Coverage Description

Attribute description
air_pressure
Descriptor

air_pressure [CF-Standard Name]; unit: Pa

Coverage Description

Attribute description
air_density
Descriptor

[CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
air_temperature
Descriptor

Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K

Coverage Description

Attribute description
mass_concentration_of_nitrate_dry_aerosol_particles_in_air
Descriptor

alias: mass_concentration_of_nitrate_dry_aerosol_in_air

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The chemical formula for the nitrate anion is NO3-. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_fraction_of_sea_salt_dry_aerosol_particles_expressed_as_cations_in_air
Descriptor

Mass fraction is used in the construction "mass_fraction_of_X_in_Y", where X is a material constituent of Y. It means the ratio of the mass of X to the mass of Y (including X). A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The phrase "sea_salt_cation" is the term used in standard names to describe collectively the group of cationic species that occur in sea salt. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Sea salt cations are mainly sodium (Na+), but also include potassium (K+), magnesium (Mg2+), calcium (Ca2+) and rarer cations. Where possible, the data variable should be accompanied by a complete description of the ions represented, for example, by using a comment attribute. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_ozone_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for ozone is O3. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
tendency_of_atmosphere_mass_content_of_oxidized_nitrogen_compounds_expressed_as_nitrogen_due_to_dry_deposition
Descriptor

"Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_of_atmosphere_layer" are used. "tendency_of_X" means derivative of X with respect to time. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Dry deposition" is the sum of turbulent deposition and gravitational settling. "Oxidized nitrogen compounds" means all chemical species containing nitrogen atoms with an oxidation state greater than zero. Usually, particle bound and gaseous nitrogen compounds, such as nitrogen monoxide (NO), nitrogen dioxide (NO2), dinitrogen pentoxide (N2O5), nitric acid (HNO3), nitrate (NO3-), peroxynitric acid (HNO4), bromine nitrate (BrONO2), chlorine nitrate (ClONO2) and organic nitrates (most notably peroxyacetyl nitrate, sometimes referred to as PAN, (CH3COO2NO2)), are included. The list of individual species that are included in this quantity can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. [CF-Standard Name]; unit: kg m-2 s-1

Coverage Description

Attribute description
mass_fraction_of_sea_salt_dry_aerosol_particles_expressed_as_cations_in_air
Descriptor

Mass fraction is used in the construction "mass_fraction_of_X_in_Y", where X is a material constituent of Y. It means the ratio of the mass of X to the mass of Y (including X). A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The phrase "sea_salt_cation" is the term used in standard names to describe collectively the group of cationic species that occur in sea salt. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Sea salt cations are mainly sodium (Na+), but also include potassium (K+), magnesium (Mg2+), calcium (Ca2+) and rarer cations. Where possible, the data variable should be accompanied by a complete description of the ions represented, for example, by using a comment attribute. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
air_temperature
Descriptor

Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K

Coverage Description

Attribute description
tendency_of_atmosphere_mass_content_of_oxidized_nitrogen_compounds_expressed_as_nitrogen_due_to_dry_deposition
Descriptor

"Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_of_atmosphere_layer" are used. "tendency_of_X" means derivative of X with respect to time. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Dry deposition" is the sum of turbulent deposition and gravitational settling. "Oxidized nitrogen compounds" means all chemical species containing nitrogen atoms with an oxidation state greater than zero. Usually, particle bound and gaseous nitrogen compounds, such as nitrogen monoxide (NO), nitrogen dioxide (NO2), dinitrogen pentoxide (N2O5), nitric acid (HNO3), nitrate (NO3-), peroxynitric acid (HNO4), bromine nitrate (BrONO2), chlorine nitrate (ClONO2) and organic nitrates (most notably peroxyacetyl nitrate, sometimes referred to as PAN, (CH3COO2NO2)), are included. The list of individual species that are included in this quantity can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. [CF-Standard Name]; unit: kg m-2 s-1

Coverage Description

Attribute description
mass_concentration_of_nitrogen_dioxide_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for nitrogen dioxide is NO2. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_sulfur_dioxide_in_air
Descriptor

[CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
humidity_mixing_ratio
Descriptor

Humidity mixing ratio of a parcel of moist air is the ratio of the mass of water vapor to the mass of dry air. [CF-Standard Name]; unit: 1

Coverage Description

Attribute description
mass_concentration_of_sulfate_dry_aerosol_particles_in_air
Descriptor

alias: mass_concentration_of_sulfate_dry_aerosol_in_air

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The chemical formula for the sulfate anion is SO4(2-). [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_nitrogen_dioxide_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for nitrogen dioxide is NO2. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_nitrogen_dioxide_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for nitrogen dioxide is NO2. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
humidity_mixing_ratio
Descriptor

Humidity mixing ratio of a parcel of moist air is the ratio of the mass of water vapor to the mass of dry air. [CF-Standard Name]; unit: 1

Coverage Description

Attribute description
tendency_of_atmosphere_mass_content_of_oxidized_nitrogen_compounds_expressed_as_nitrogen_due_to_wet_deposition
Descriptor

"Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_of_atmosphere_layer" are used. "tendency_of_X" means derivative of X with respect to time. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Wet deposition" means deposition by precipitation. "Oxidized nitrogen compounds" means all chemical species containing nitrogen atoms with an oxidation state greater than zero. Usually, particle bound and gaseous nitrogen compounds, such as nitrogen monoxide (NO), nitrogen dioxide (NO2), dinitrogen pentoxide (N2O5), nitric acid (HNO3), nitrate (NO3-), peroxynitric acid (HNO4), bromine nitrate (BrONO2), chlorine nitrate (ClONO2) and organic nitrates (most notably peroxyacetyl nitrate, sometimes referred to as PAN, (CH3COO2NO2)), are included. The list of individual species that are included in this quantity can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. [CF-Standard Name]; unit: kg m-2 s-1

Coverage Description

Attribute description
mass_concentration_of_ozone_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for ozone is O3. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
air_density
Descriptor

[CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_sulfate_dry_aerosol_particles_in_air
Descriptor

alias: mass_concentration_of_sulfate_dry_aerosol_in_air

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The chemical formula for the sulfate anion is SO4(2-). [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
lwe_thickness_of_stratiform_precipitation_amount
Descriptor

alias: lwe_thickness_of_large_scale_precipitation_amount

The construction lwe_thickness_of_X_amount or _content means the vertical extent of a layer of liquid water having the same mass per unit area. Stratiform precipitation, whether liquid or frozen, is precipitation that formed in stratiform cloud. "Precipitation" in the earth's atmosphere means precipitation of water in all phases. The abbreviation "lwe" means liquid water equivalent. [CF-Standard Name]; unit: m

Coverage Description

Attribute description
mass_concentration_of_ammonium_dry_aerosol_particles_in_air
Descriptor

alias: mass_concentration_of_ammonium_dry_aerosol_in_air

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The chemical formula for ammonium is NH4. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_ammonia_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for ammonia is NH3. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_sulfate_dry_aerosol_particles_in_air
Descriptor

alias: mass_concentration_of_sulfate_dry_aerosol_in_air

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The chemical formula for the sulfate anion is SO4(2-). [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_chloride_dry_aerosol_particles_in_air
Descriptor

not filled; unit: kg m-3

Coverage Description

Attribute description
tendency_of_atmosphere_mass_content_of_reduced_nitrogen_compounds_expressed_as_nitrogen_due_to_dry_deposition
Descriptor

"Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_of_atmosphere_layer" are used. "tendency_of_X" means derivative of X with respect to time. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Dry deposition" is the sum of turbulent deposition and gravitational settling. "Reduced nitrogen compounds" means all chemical species containing nitrogen atoms with an oxidation state less than zero. Usually, particle bound and gaseous nitrogen compounds, primarily ammonium (NH4+) and ammonia (NH3), are included. The list of individual species that are included in this quantity can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. [CF-Standard Name]; unit: kg m-2 s-1

Coverage Description

Attribute description
tendency_of_atmosphere_mass_content_of_oxidized_nitrogen_compounds_expressed_as_nitrogen_due_to_wet_deposition
Descriptor

"Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_of_atmosphere_layer" are used. "tendency_of_X" means derivative of X with respect to time. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Wet deposition" means deposition by precipitation. "Oxidized nitrogen compounds" means all chemical species containing nitrogen atoms with an oxidation state greater than zero. Usually, particle bound and gaseous nitrogen compounds, such as nitrogen monoxide (NO), nitrogen dioxide (NO2), dinitrogen pentoxide (N2O5), nitric acid (HNO3), nitrate (NO3-), peroxynitric acid (HNO4), bromine nitrate (BrONO2), chlorine nitrate (ClONO2) and organic nitrates (most notably peroxyacetyl nitrate, sometimes referred to as PAN, (CH3COO2NO2)), are included. The list of individual species that are included in this quantity can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. [CF-Standard Name]; unit: kg m-2 s-1

Coverage Description

Attribute description
lwe_thickness_of_convective_precipitation_amount
Descriptor

lwe_thickness_of_convective_precipitation_amount [CF-Standard Name]; unit: m

Coverage Description

Attribute description
mass_concentration_of_ammonia_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for ammonia is NH3. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
lwe_thickness_of_stratiform_precipitation_amount
Descriptor

alias: lwe_thickness_of_large_scale_precipitation_amount

The construction lwe_thickness_of_X_amount or _content means the vertical extent of a layer of liquid water having the same mass per unit area. Stratiform precipitation, whether liquid or frozen, is precipitation that formed in stratiform cloud. "Precipitation" in the earth's atmosphere means precipitation of water in all phases. The abbreviation "lwe" means liquid water equivalent. [CF-Standard Name]; unit: m

Coverage Description

Attribute description
mass_concentration_of_nitrogen_monoxide_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for nitrogen monoxide is NO. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_ammonium_dry_aerosol_particles_in_air
Descriptor

alias: mass_concentration_of_ammonium_dry_aerosol_in_air

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The chemical formula for ammonium is NH4. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
tendency_of_atmosphere_mass_content_of_oxidized_nitrogen_compounds_expressed_as_nitrogen_due_to_dry_deposition
Descriptor

"Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_of_atmosphere_layer" are used. "tendency_of_X" means derivative of X with respect to time. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Dry deposition" is the sum of turbulent deposition and gravitational settling. "Oxidized nitrogen compounds" means all chemical species containing nitrogen atoms with an oxidation state greater than zero. Usually, particle bound and gaseous nitrogen compounds, such as nitrogen monoxide (NO), nitrogen dioxide (NO2), dinitrogen pentoxide (N2O5), nitric acid (HNO3), nitrate (NO3-), peroxynitric acid (HNO4), bromine nitrate (BrONO2), chlorine nitrate (ClONO2) and organic nitrates (most notably peroxyacetyl nitrate, sometimes referred to as PAN, (CH3COO2NO2)), are included. The list of individual species that are included in this quantity can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. [CF-Standard Name]; unit: kg m-2 s-1

Coverage Description

Attribute description
mass_concentration_of_nitric_acid_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for nitric acid is HNO3. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
air_pressure
Descriptor

air_pressure [CF-Standard Name]; unit: Pa

Coverage Description

Attribute description
mass_concentration_of_nitric_acid_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for nitric acid is HNO3. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
air_temperature
Descriptor

Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K

Coverage Description

Attribute description
mass_fraction_of_sea_salt_dry_aerosol_particles_expressed_as_cations_in_air
Descriptor

Mass fraction is used in the construction "mass_fraction_of_X_in_Y", where X is a material constituent of Y. It means the ratio of the mass of X to the mass of Y (including X). A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The phrase "sea_salt_cation" is the term used in standard names to describe collectively the group of cationic species that occur in sea salt. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Sea salt cations are mainly sodium (Na+), but also include potassium (K+), magnesium (Mg2+), calcium (Ca2+) and rarer cations. Where possible, the data variable should be accompanied by a complete description of the ions represented, for example, by using a comment attribute. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_nitrogen_monoxide_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for nitrogen monoxide is NO. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_nitric_acid_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for nitric acid is HNO3. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
tendency_of_atmosphere_mass_content_of_reduced_nitrogen_compounds_expressed_as_nitrogen_due_to_dry_deposition
Descriptor

"Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_of_atmosphere_layer" are used. "tendency_of_X" means derivative of X with respect to time. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Dry deposition" is the sum of turbulent deposition and gravitational settling. "Reduced nitrogen compounds" means all chemical species containing nitrogen atoms with an oxidation state less than zero. Usually, particle bound and gaseous nitrogen compounds, primarily ammonium (NH4+) and ammonia (NH3), are included. The list of individual species that are included in this quantity can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. [CF-Standard Name]; unit: kg m-2 s-1

Coverage Description

Attribute description
mass_concentration_of_nitrate_dry_aerosol_particles_in_air
Descriptor

alias: mass_concentration_of_nitrate_dry_aerosol_in_air

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The chemical formula for the nitrate anion is NO3-. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_chloride_dry_aerosol_particles_in_air
Descriptor

not filled; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_sulfur_dioxide_in_air
Descriptor

[CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_ozone_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for ozone is O3. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_nitrogen_monoxide_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for nitrogen monoxide is NO. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_nitrogen_dioxide_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for nitrogen dioxide is NO2. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_ozone_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for ozone is O3. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_ammonia_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for ammonia is NH3. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_sulfur_dioxide_in_air
Descriptor

[CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
lwe_thickness_of_convective_precipitation_amount
Descriptor

lwe_thickness_of_convective_precipitation_amount [CF-Standard Name]; unit: m

Coverage Description

Attribute description
lwe_thickness_of_stratiform_precipitation_amount
Descriptor

alias: lwe_thickness_of_large_scale_precipitation_amount

The construction lwe_thickness_of_X_amount or _content means the vertical extent of a layer of liquid water having the same mass per unit area. Stratiform precipitation, whether liquid or frozen, is precipitation that formed in stratiform cloud. "Precipitation" in the earth's atmosphere means precipitation of water in all phases. The abbreviation "lwe" means liquid water equivalent. [CF-Standard Name]; unit: m

Coverage Description

Attribute description
tendency_of_atmosphere_mass_content_of_reduced_nitrogen_compounds_expressed_as_nitrogen_due_to_wet_deposition
Descriptor

"Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_of_atmosphere_layer" are used. "tendency_of_X" means derivative of X with respect to time. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Wet deposition" means deposition by precipitation. "Reduced nitrogen compounds" means all chemical species containing nitrogen atoms with an oxidation state less than zero. Usually, particle bound and gaseous nitrogen compounds, primarily ammonium (NH4+) and ammonia (NH3), are included. The list of individual species that are included in this quantity can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. [CF-Standard Name]; unit: kg m-2 s-1

Coverage Description

Attribute description
air_temperature
Descriptor

Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K

Coverage Description

Attribute description
lwe_thickness_of_convective_precipitation_amount
Descriptor

lwe_thickness_of_convective_precipitation_amount [CF-Standard Name]; unit: m

Coverage Description

Attribute description
mass_concentration_of_nitrate_dry_aerosol_particles_in_air
Descriptor

alias: mass_concentration_of_nitrate_dry_aerosol_in_air

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The chemical formula for the nitrate anion is NO3-. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
air_pressure
Descriptor

air_pressure [CF-Standard Name]; unit: Pa

Coverage Description

Attribute description
mass_concentration_of_ammonium_dry_aerosol_particles_in_air
Descriptor

alias: mass_concentration_of_ammonium_dry_aerosol_in_air

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The chemical formula for ammonium is NH4. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
tendency_of_atmosphere_mass_content_of_oxidized_nitrogen_compounds_expressed_as_nitrogen_due_to_dry_deposition
Descriptor

"Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_of_atmosphere_layer" are used. "tendency_of_X" means derivative of X with respect to time. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Dry deposition" is the sum of turbulent deposition and gravitational settling. "Oxidized nitrogen compounds" means all chemical species containing nitrogen atoms with an oxidation state greater than zero. Usually, particle bound and gaseous nitrogen compounds, such as nitrogen monoxide (NO), nitrogen dioxide (NO2), dinitrogen pentoxide (N2O5), nitric acid (HNO3), nitrate (NO3-), peroxynitric acid (HNO4), bromine nitrate (BrONO2), chlorine nitrate (ClONO2) and organic nitrates (most notably peroxyacetyl nitrate, sometimes referred to as PAN, (CH3COO2NO2)), are included. The list of individual species that are included in this quantity can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. [CF-Standard Name]; unit: kg m-2 s-1

Coverage Description

Attribute description
mass_concentration_of_sulfur_dioxide_in_air
Descriptor

[CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_ammonium_dry_aerosol_particles_in_air
Descriptor

alias: mass_concentration_of_ammonium_dry_aerosol_in_air

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The chemical formula for ammonium is NH4. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_ammonia_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for ammonia is NH3. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
lwe_thickness_of_stratiform_precipitation_amount
Descriptor

alias: lwe_thickness_of_large_scale_precipitation_amount

The construction lwe_thickness_of_X_amount or _content means the vertical extent of a layer of liquid water having the same mass per unit area. Stratiform precipitation, whether liquid or frozen, is precipitation that formed in stratiform cloud. "Precipitation" in the earth's atmosphere means precipitation of water in all phases. The abbreviation "lwe" means liquid water equivalent. [CF-Standard Name]; unit: m

Coverage Description

Attribute description
mass_fraction_of_sea_salt_dry_aerosol_particles_expressed_as_cations_in_air
Descriptor

Mass fraction is used in the construction "mass_fraction_of_X_in_Y", where X is a material constituent of Y. It means the ratio of the mass of X to the mass of Y (including X). A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The phrase "sea_salt_cation" is the term used in standard names to describe collectively the group of cationic species that occur in sea salt. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Sea salt cations are mainly sodium (Na+), but also include potassium (K+), magnesium (Mg2+), calcium (Ca2+) and rarer cations. Where possible, the data variable should be accompanied by a complete description of the ions represented, for example, by using a comment attribute. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_nitrate_dry_aerosol_particles_in_air
Descriptor

alias: mass_concentration_of_nitrate_dry_aerosol_in_air

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The chemical formula for the nitrate anion is NO3-. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
tendency_of_atmosphere_mass_content_of_oxidized_nitrogen_compounds_expressed_as_nitrogen_due_to_wet_deposition
Descriptor

"Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_of_atmosphere_layer" are used. "tendency_of_X" means derivative of X with respect to time. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Wet deposition" means deposition by precipitation. "Oxidized nitrogen compounds" means all chemical species containing nitrogen atoms with an oxidation state greater than zero. Usually, particle bound and gaseous nitrogen compounds, such as nitrogen monoxide (NO), nitrogen dioxide (NO2), dinitrogen pentoxide (N2O5), nitric acid (HNO3), nitrate (NO3-), peroxynitric acid (HNO4), bromine nitrate (BrONO2), chlorine nitrate (ClONO2) and organic nitrates (most notably peroxyacetyl nitrate, sometimes referred to as PAN, (CH3COO2NO2)), are included. The list of individual species that are included in this quantity can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. [CF-Standard Name]; unit: kg m-2 s-1

Coverage Description

Attribute description
tendency_of_atmosphere_mass_content_of_reduced_nitrogen_compounds_expressed_as_nitrogen_due_to_wet_deposition
Descriptor

"Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_of_atmosphere_layer" are used. "tendency_of_X" means derivative of X with respect to time. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Wet deposition" means deposition by precipitation. "Reduced nitrogen compounds" means all chemical species containing nitrogen atoms with an oxidation state less than zero. Usually, particle bound and gaseous nitrogen compounds, primarily ammonium (NH4+) and ammonia (NH3), are included. The list of individual species that are included in this quantity can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. [CF-Standard Name]; unit: kg m-2 s-1

Coverage Description

Attribute description
mass_concentration_of_chloride_dry_aerosol_particles_in_air
Descriptor

not filled; unit: kg m-3

Coverage Description

Attribute description
air_density
Descriptor

[CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_sulfate_dry_aerosol_particles_in_air
Descriptor

alias: mass_concentration_of_sulfate_dry_aerosol_in_air

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The chemical formula for the sulfate anion is SO4(2-). [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
tendency_of_atmosphere_mass_content_of_reduced_nitrogen_compounds_expressed_as_nitrogen_due_to_wet_deposition
Descriptor

"Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_of_atmosphere_layer" are used. "tendency_of_X" means derivative of X with respect to time. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Wet deposition" means deposition by precipitation. "Reduced nitrogen compounds" means all chemical species containing nitrogen atoms with an oxidation state less than zero. Usually, particle bound and gaseous nitrogen compounds, primarily ammonium (NH4+) and ammonia (NH3), are included. The list of individual species that are included in this quantity can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. [CF-Standard Name]; unit: kg m-2 s-1

Coverage Description

Attribute description
tendency_of_atmosphere_mass_content_of_reduced_nitrogen_compounds_expressed_as_nitrogen_due_to_wet_deposition
Descriptor

"Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_of_atmosphere_layer" are used. "tendency_of_X" means derivative of X with respect to time. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Wet deposition" means deposition by precipitation. "Reduced nitrogen compounds" means all chemical species containing nitrogen atoms with an oxidation state less than zero. Usually, particle bound and gaseous nitrogen compounds, primarily ammonium (NH4+) and ammonia (NH3), are included. The list of individual species that are included in this quantity can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. [CF-Standard Name]; unit: kg m-2 s-1

Coverage Description

Attribute description
mass_concentration_of_nitrogen_monoxide_in_air
Descriptor

Mass concentration means mass per unit volume and is used in the construction mass_concentration_of_X_in_Y, where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_expressed_as_nitrogen'. The chemical formula for nitrogen monoxide is NO. [CF-Standard Name]; unit: kg m-3

Coverage Description

Attribute description
mass_concentration_of_chloride_dry_aerosol_particles_in_air
Descriptor

not filled; unit: kg m-3

Coverage Description

Attribute description
humidity_mixing_ratio
Descriptor

Humidity mixing ratio of a parcel of moist air is the ratio of the mass of water vapor to the mass of dry air. [CF-Standard Name]; unit: 1

Coverage Description

Attribute description
tendency_of_atmosphere_mass_content_of_oxidized_nitrogen_compounds_expressed_as_nitrogen_due_to_wet_deposition
Descriptor

"Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_of_atmosphere_layer" are used. "tendency_of_X" means derivative of X with respect to time. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Wet deposition" means deposition by precipitation. "Oxidized nitrogen compounds" means all chemical species containing nitrogen atoms with an oxidation state greater than zero. Usually, particle bound and gaseous nitrogen compounds, such as nitrogen monoxide (NO), nitrogen dioxide (NO2), dinitrogen pentoxide (N2O5), nitric acid (HNO3), nitrate (NO3-), peroxynitric acid (HNO4), bromine nitrate (BrONO2), chlorine nitrate (ClONO2) and organic nitrates (most notably peroxyacetyl nitrate, sometimes referred to as PAN, (CH3COO2NO2)), are included. The list of individual species that are included in this quantity can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. [CF-Standard Name]; unit: kg m-2 s-1

Coverage Description

Attribute description
tendency_of_atmosphere_mass_content_of_reduced_nitrogen_compounds_expressed_as_nitrogen_due_to_dry_deposition
Descriptor

"Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_of_atmosphere_layer" are used. "tendency_of_X" means derivative of X with respect to time. The specification of a physical process by the phrase "due_to_" process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Dry deposition" is the sum of turbulent deposition and gravitational settling. "Reduced nitrogen compounds" means all chemical species containing nitrogen atoms with an oxidation state less than zero. Usually, particle bound and gaseous nitrogen compounds, primarily ammonium (NH4+) and ammonia (NH3), are included. The list of individual species that are included in this quantity can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase "expressed_as" is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. [CF-Standard Name]; unit: kg m-2 s-1

 

Metadata

Metadata

File identifier
wdc-climate.de:3529778 XML
Metadata language

eng; USA

Hierarchy level
collection
Hierarchy level name

CMAQ_CCLM_HZG_2008

Date stamp
2017-06-08T08:47:22
Metadata standard name

ISO 19115

Metadata standard version

ISO 19115-2:2009

Point of contact
  Deutsches Klimarechenzentrum - Dr. Daniel Neumann
http://www.dkrz.de/
Point of contact
  Max Planck Institute for Meteorology - Volker Matthias
http://www.mpimet.mpg.de/
 
 

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