My GeoNetwork catalogue
cops_nebt_ubt_flux: Eddy-covariance turbulence data from COPS energy balance and turbulence network stations run by University of Bayreuth during COPS 2007
The energy balance stations run by University of Bayreuth measured either high-frequency (20 Hz) eddy-covariance raw data with a CSAT3 (Campbell Scientific, Inc.) sonic anemometer and a LI-7500 (LI-COR Biosciences) hygrometer or turbulent fluxes of momentum, sensible and latent heat with a USA-1 (METEK GmbH, Germany) sonic anemometer and two psychrometers (Frankenberger) above different the target land use types. The measuring set-up was continuously running during the entire COPS measurement period in order to provide a complete time series of the turbulent fluxes of momentum, sensible and latent heat as well as carbon dioxide. Post-processing was performed using the software package TK2 (developed by the Department of Micrometeorology, University of Bayreuth) which produces quality assured turbulent flux data with an averaging interval of 30 min. The documentation and instruction manual of TK2 (see entry cops_nebt_ubt_info_1) and additional references about the applied flux corrections and post-field data quality control (see entry cops_nebt_ubt_info_2) as well as a document about the general handling of the flux data can be found in supplementary pdf-files within the energy balance and turbulence network (NEBT) experiment of the data base. The turbulent flux data in this data set are flagged according to their quality and checked for an impact of possible internal boundary layers. Additionally, the flux contribution from the target land use type intended to be observed to the total flux measured was calculated applying footprint modeling. Information and references about the internal boundary layer evaluation procedure and the footprint analysis are also given in the additional pdf-files. Pictures of the footprint climatology of the station as related to the land use and to the spatial distribution of the quality flags are included in the supplementary pdf-files corresponding to the individual station.
Simple
- Date (Publication)
- 2012-02-10
- Edition
-
1
- Citation identifier
- cops_nebt_ubt_flux
- Citation identifier
- doi:10.1594/WDCC/cops_nebt_ubt_flux
http://www.bayceer.uni-bayreuth.de/mm/
- Name
-
NetCDF
- Keywords
-
-
energy balance
-
- Keywords
-
-
ground based
-
- Keywords
-
-
observational data
-
- Keywords
-
-
turbulence
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- Use limitation
-
COPS scientific use: For scientific use only. No commercial use allowed. Please be aware of the common COPS/GOP/D-PHASE data policy http://cops.wdc-climate.de/
- Use limitation
-
scientific use: For scientific use only
- Language
-
eng; USA
))
- Begin date
- 2007-06-01
- End date
- 2007-08-31
- Distribution format
-
-
NetCDF
()
-
NetCDF
()
- Transfer size
- 7
- OnLine resource
- https://www.wdc-climate.de/ui/entry?acronym=cops_nebt_ubt_flux
- 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
- Attribute description
- target_land_use_contribution
- Descriptor
-
not filled; unit: 0.01
- Attribute description
- status_flag_of_internal_boundary_layer_thickness
- Descriptor
-
not filled; unit: none
- Attribute description
- surface_altitude
- Descriptor
-
The surface called "surface" means the lower boundary of the atmosphere. Altitude is the (geometric) height above the geoid, which is the reference geopotential surface. The geoid is similar to mean sea level.[CF-Standard Name]; unit: m
- Attribute description
- status_flag_of_friction_velocity
- Descriptor
-
not filled; unit: none
- Attribute description
- y_wind (variance)
- Descriptor
-
y_wind-variance [CF-Standard Name (cell_method)]; unit: m2 s-2
- Attribute description
- absolute_humidity
- Descriptor
-
not filled; unit: g m-3
- Attribute description
- status_flag_of_surface_carbon_dioxide_mole_flux
- Descriptor
-
not filled; unit: none
- Attribute description
- surface_upward_sensible_heat_flux
- Descriptor
-
The surface called "surface" means the lower boundary of the atmosphere. "Upward" indicates a vector component which is positive when directed upward (negative downward). The surface sensible heat flux, also called "turbulent" heat flux, is the exchange of heat between the surface and the air by motion of air. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Standard Name]; unit: W m-2
- Attribute description
- canopy_height
- Descriptor
-
Height is the vertical distance above the surface. "Canopy" means the plant or vegetation canopy.[CF-Standard Name]; unit: m
- Attribute description
- latitude
- Descriptor
-
latitude [CF-Standard Name]; unit: degree_north
- Attribute description
- upward_air_velocity (variance)
- Descriptor
-
"A velocity is a vector quantity. "Upward" indicates a vector component which is positive when directed upward (negative downward). Upward air velocity is the vertical component of the 3D air velocity vector. [CF-Standard Name (cell_method)]; unit: m2 s-2
- Attribute description
- longitude
- Descriptor
-
longitude [CF-Standard Name]; unit: degree_east
- Attribute description
- internal_boundary_layer_thickness
- Descriptor
-
not filled; unit: m
- Attribute description
- x_wind (variance)
- Descriptor
-
x_wind-variance [CF-Standard Name (cell_method)]; unit: m2 s-2
- Attribute description
- water_vapor_pressure-at90cm_above_surface
- Descriptor
-
Vapor pressure is the partial pressure of a constituent of air, such as water, which exists as liquid or solid under "normal" conditions. "Water" is specified when the term is being applied to wate [CF-Standard Name-vertical_coordinate]; unit: hPa
- Attribute description
- wind_from_direction
- Descriptor
-
Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) In meteorological reports, the direction of the wind vector is usually (but not always) given as the direction from which it is blowing (wind_from_direction) (westerly, northerly, etc.). In other contexts, such as atmospheric modelling, it is often natural to give the direction in the usual manner of vectors as the heading or the direction to which it is blowing (wind_to_direction) (eastward, southward, etc.) "from_direction" is used in the construction X_from_direction and indicates the direction from which the velocity vector of X is coming. [CF-Standard Name]; unit: degree
- Attribute description
- sonic_temperature
- Descriptor
-
not filled; unit: degC
- Attribute description
- mole_concentration_of_carbon_dioxide_in_air
- Descriptor
-
Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction mole_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 carbon dioxide is CO2. [CF-Standard Name]; unit: mmol m-3
- Attribute description
- status_flag_of_surface_upward_sensible_heat_flux
- Descriptor
-
not filled; unit: none
- Attribute description
- wind_speed
- Descriptor
-
Speed is the magnitude of velocity. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_air_velocity.) The wind speed is the magnitude of the wind velocity.[CF-Standard Name]; unit: m s-1
- Attribute description
- water_vapor_pressure-at227cm_above_surface
- Descriptor
-
Vapor pressure is the partial pressure of a constituent of air, such as water, which exists as liquid or solid under "normal" conditions. "Water" is specified when the term is being applied to wate [CF-Standard Name-vertical_coordinate]; unit: hPa
- Attribute description
- atmospheric_stability_parameter_in_surface_layer
- Descriptor
-
not filled; unit: 1
- Attribute description
- air_temperature-at227cm
- Descriptor
-
Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate]; unit: degC
- Attribute description
- variance_of_absolute_humidity
- Descriptor
-
not filled; unit: g2 m-6
- Attribute description
- sensor_height_above_ground
- Descriptor
-
not filled; unit: m
- Attribute description
- variance_of_sonic_temperature
- Descriptor
-
not filled; unit: degC2
- Attribute description
- status_flag_of_surface_upward_latent_heat_flux
- Descriptor
-
not filled; unit: none
- Attribute description
- air_temperature-at90cm
- Descriptor
-
Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate]; unit: degC
- Attribute description
- mole_concentration_of_carbon_dioxide_in_air (variance)
- Descriptor
-
Mole concentration means number of moles per unit volume, also called "molarity", and is used in the construction mole_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 carbon dioxide is CO2. [CF-Standard Name (cell_method)]; unit: mmol2 m-6
- Attribute description
- surface_carbon_dioxide_mole_flux
- Descriptor
-
The surface called "surface" means the lower boundary of the atmosphere. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. [CF-Standard Name]; unit: mmol m-2 s-1
- Attribute description
- fetch_length
- Descriptor
-
not filled; unit: m
- Attribute description
- friction_velocity
- Descriptor
-
not filled; unit: m s-1
- Attribute description
- surface_upward_latent_heat_flux
- Descriptor
-
The surface called "surface" means the lower boundary of the atmosphere. "Upward" indicates a vector component which is positive when directed upward (negative downward). The surface latent heat flux is the exchange of heat between the surface and the air on account of evaporation (including sublimation). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics.[CF-Standard Name]; unit: W m-2
- File identifier
- wdc-climate.de:2234698 XML
- Metadata language
-
eng; USA
- Hierarchy level
- collection
- Hierarchy level name
-
cops_nebt_ubt_flux
- Date stamp
- 2010-02-12T15:05:43
- Metadata standard name
-
ISO 19115
- Metadata standard version
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ISO 19115-2:2009
Overviews
Spatial extent
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