High resolution obstacle-resolved model results for the city centre of Hamburg, Germany, from the microscale transport and stream model MITRAS on 21 June 2000

This experiment contains the model output of a simulation by the microscale obstacle resolving model MITRAS (Salim et al., 2018; Schluenzen et al., 2018, model version MITRAS ver2 rev471a5b5). MITRAS can resolve small scale atmospheric processes in urban areas and is maintained by the MEMI working group of the University of Hamburg ( https://www.mi.uni-hamburg.de/en/arbeitsgruppen/memi/ ).

The aim of this simulation was to create an obstacle resolving model (ORM) dataset to test the suitability of the newly established ATMODAT standard (Ganske et al., 2021) in standardising ORM results, as a part of the AtMoDat project ( https://www.atmodat.de/ ).

The simulation results show the distribution of passive tracer and wind field within the city center of Hamburg, Germany.

Emitted tracer represent particulate matter (pm10), emitted from green spaces in the city center. Only dynamical effects are calculated in this simulation. The model domain covers an area of 2000x2000x8000 m, using a non-equidistant, cartesian grid with an spatial resolution of 2.5 m in horizontal and 5 m in vertical direction with increasing grid cell size towards the model boundaries. Information about the location and height of the obstacles are provided within the dataset. The model domain is based on the study of Hefny Salim et al., (2015).

The simulation covers one hour model time, starting at 4 am model time, with a temporal resolution of 5 minutes. This dataset contains a selection of output variables; control variables are not included.

Model Settings: passive tracer emission; no diurnal cycle; stable stratification; low wind speed (u,v = 3 m/s, 0 m/s).

This dataset has been standardized according to the ATMODAT Standard (v3.0) (Ganske et al., 2021). The AtMoDat project was funded in the framework of \"Forschungsvorhaben zur Entwicklung und Erprobung von Kurationskriterien und Qualitaetsstandards von Forschungsdaten\" by the German Federal Ministry of Education and Research (BMBF; FKZ: 16QK02C). This data was prepared in the project AtMoDat and acts as an example dataset for standardisation of microscale model data using the ATMODAT standard.

Simple

Date (Publication)
2023-06-15
Edition

1
Citation identifier
MITRAS_ATMODAT
Citation identifier
doi:10.26050/WDCC/MITRAS_ATMODAT
Principal investigator
  University of Hamburg - Dr. David Grawe
http://www.mi.uni-hamburg.de/
Author
  University of Hamburg - Vivien Voss
http://www.mi.uni-hamburg.de/
Publisher
  WDC Climate at DKRZ
Point of contact
  University of Hamburg - Dr. David Grawe
http://www.mi.uni-hamburg.de/
Name

NetCDF
Keywords

  • ATMODAT
Keywords

  • EASYDAB
Keywords

  • FOS: Earth and related environmental science
Keywords

  • Hamburg-Mitte
Keywords

  • aerosol
Keywords

  • atmos
Keywords

  • atmosphere
Keywords

  • atmospheric chemistry
Keywords

  • atmospheric dispersion
Keywords

  • climate
Keywords

  • obstacle-resolving model
Keywords

  • urban
Keywords

  • wind field
Use limitation

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

Language

eng; USA
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Begin date
2000-06-21
End date
2000-06-21
Distribution format
  • NetCDF ()

Transfer size
8915
OnLine resource
https://www.wdc-climate.de/ui/entry?acronym=MITRAS_ATMODAT
Hierarchy level
collection
Attribute description
mass_concentration_of_pm10_ambient_aerosol_particles_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". "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. "Pm10 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. To specify the relative humidity and temperature at which the particle size applies, provide scalar coordinate variables with the standard names of, respectively, "relative_humidity" and "air_temperature." [CF-Standard Name]; unit: not filled
Attribute description
air_density
Descriptor

[CF-Standard Name]; unit: not filled
Attribute description
upward_air_velocity
Descriptor

vertical wind velocity 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]; unit: not filled
Attribute description
area_fraction
Descriptor

"Area fraction" means the fraction of horizontal area. To specify which area is quantified by a variable of "area_fraction", provide a coordinate variable or scalar coordinate variable of "area_type". Alternatively, if one is defined, use a more specific standard name of "X_area_fraction" for the fraction of horizontal area occupied by X. [CF-Standard Name]; unit: not filled
Attribute description
specific_turbulent_kinetic_energy_of_air
Descriptor

specific_turbulent_kinetic_energy_of_air; unit: not filled
Attribute description
projection_y_coordinate
Descriptor

"y" indicates a vector component along the grid y-axis, when this is not true latitude, positive with increasing y. Projection coordinates are distances in the x- and y-directions on a plane onto which the surface of the Earth has been projected according to a map projection. The relationship between the projection coordinates and latitude and longitude is described by the grid_mapping. [CF-Standard Name]; unit: not filled
Attribute description
x_wind
Descriptor

"x" indicates a vector component along the grid x-axis, when this is not true longitude, positive with increasing x. 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.)[CF-Standard Name]; unit: not filled
Attribute description
projection_x_coordinate
Descriptor

"x" indicates a vector component along the grid x-axis, when this is not true longitude, positive with increasing x. Projection coordinates are distances in the x- and y-directions on a plane onto which the surface of the Earth has been projected according to a map projection. The relationship between the projection coordinates and latitude and longitude is described by the grid_mapping. [CF-Standard Name]; unit: not filled
Attribute description
air_pressure
Descriptor

air_pressure [CF-Standard Name]; unit: not filled
Attribute description
y_wind
Descriptor

"y" indicates a vector component along the grid y-axis, when this is not true latitude, positive with increasing y. 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.)[CF-Standard Name]; unit: not filled
File identifier
wdc-climate.de:4104673 XML
Metadata language

eng; USA
Hierarchy level
collection
Hierarchy level name

MITRAS_ATMODAT
Date stamp
2023-04-20T13:34:41
Metadata standard name

ISO 19115
Metadata standard version

ISO 19115-2:2009
Point of contact
  University of Hamburg - Dr. David Grawe
http://www.mi.uni-hamburg.de/
 
 

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