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wdc-climate.de:4104673 eng; USA collection MITRAS_ATMODAT Dr. David Grawe University of Hamburg http://www.mi.uni-hamburg.de/ pointOfContact 2023-04-20T13:34:41 ISO 19115 ISO 19115-2:2009 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 2023-06-15 publication 1 MITRAS_ATMODAT doi:10.26050/WDCC/MITRAS_ATMODAT Dr. David Grawe University of Hamburg http://www.mi.uni-hamburg.de/ Email: david.grawe@uni-hamburg.de principalInvestigator Vivien Voss University of Hamburg http://www.mi.uni-hamburg.de/ Email: vivien.voss@uni-hamburg.de author WDC Climate at DKRZ publisher 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. Dr. David Grawe University of Hamburg http://www.mi.uni-hamburg.de/ pointOfContact NetCDF ATMODAT EASYDAB FOS: Earth and related environmental science Hamburg-Mitte aerosol atmos atmosphere atmospheric chemistry atmospheric dispersion climate obstacle-resolving model urban wind field CC-BY-4.0: Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ eng; USA 9.9797 10.0083 53.5417 53.5601 standard 2000-06-21 2000-06-21 mass_concentration_of_pm10_ambient_aerosol_particles_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. "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 air_density [CF-Standard Name]; unit: not filled upward_air_velocity 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 area_fraction "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 specific_turbulent_kinetic_energy_of_air specific_turbulent_kinetic_energy_of_air; unit: not filled projection_y_coordinate "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 x_wind "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 projection_x_coordinate "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 air_pressure air_pressure [CF-Standard Name]; unit: not filled y_wind "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 NetCDF 8915 https://www.wdc-climate.de/ui/entry?acronym=MITRAS_ATMODAT information collection