netcdf WINTER_HAM_MitrasModEx_ds_1_14945881145810069189 { dimensions: time = UNLIMITED ; // (37 currently) nsfccl = 3 ; kv = 49 ; j = 35 ; i = 42 ; k = 48 ; nv = 2 ; variables: float albedoini(nsfccl) ; albedoini:_FillValue = -999.f ; albedoini:long_name = "initial albedo" ; albedoini:standard_name = "surface_albedo" ; albedoini:structure = "0010" ; albedoini:units = "1" ; float yz0clsini(nsfccl) ; yz0clsini:_FillValue = -999.f ; yz0clsini:long_name = "initial roughness length" ; yz0clsini:standard_name = "surface_roughness_length" ; yz0clsini:structure = "0010" ; yz0clsini:units = "m" ; float zvmet(kv, j, i) ; zvmet:_FillValue = -999.f ; zvmet:long_name = "vertical distance above surface" ; zvmet:standard_name = "height" ; zvmet:structure = "0013" ; zvmet:units = "m" ; zvmet:cell_methods = "kv: j: i: mean" ; zvmet:positive = "up" ; zvmet:coordinates = "lon lat" ; float yzsurf(j, i) ; yzsurf:_FillValue = -999.f ; yzsurf:long_name = "surface height" ; yzsurf:standard_name = "surface_altitude" ; yzsurf:structure = "0017" ; yzsurf:units = "m" ; yzsurf:cell_methods = "j: i: mean" ; yzsurf:coordinates = "lon lat" ; double elam ; elam:_FillValue = -999. ; elam:long_name = "longitude of reference point" ; elam:standard_name = "longitude" ; elam:structure = "0018" ; elam:units = "degree_east" ; double ephi ; ephi:_FillValue = -999. ; ephi:long_name = "latitude of reference point" ; ephi:standard_name = "latitude" ; ephi:structure = "0018" ; ephi:units = "degree_north" ; float surfra(nsfccl, j, i) ; surfra:_FillValue = -999.f ; surfra:long_name = "surface cover class" ; surfra:standard_name = "area_fraction" ; surfra:structure = "0019" ; surfra:units = "1" ; surfra:cell_methods = "j: i: mean" ; surfra:coordinates = "lon lat" ; float building_mask(time, k, j, i) ; building_mask:_FillValue = -999.f ; building_mask:long_name = "building mask" ; building_mask:structure = "1010" ; building_mask:units = "1" ; building_mask:cell_methods = "time: point k: j: i: mean" ; building_mask:coordinates = "lon lat" ; float averphi(time, k, j, i) ; averphi:_FillValue = -999.f ; averphi:long_name = "vertical exchange coefficient for scalar quantities" ; averphi:structure = "6010" ; averphi:units = "m2 s-1" ; averphi:cell_methods = "time: point k: j: i: mean" ; averphi:coordinates = "lon lat" ; float ahorphi(time, k, j, i) ; ahorphi:_FillValue = -999.f ; ahorphi:long_name = "horizontal exchange coefficient for scalar quantities" ; ahorphi:structure = "6011" ; ahorphi:units = "m2 s-1" ; ahorphi:cell_methods = "time: point k: j: i: mean" ; ahorphi:coordinates = "lon lat" ; float qlrsedi(time, kv, j, i) ; qlrsedi:_FillValue = -999.f ; qlrsedi:long_name = "terminal velocity" ; qlrsedi:structure = "7209" ; qlrsedi:units = "m s-1" ; qlrsedi:cell_methods = "time: point kv: j: i: mean" ; qlrsedi:comment = "sedimentation velocity (downward) of rain" ; qlrsedi:coordinates = "lon lat" ; float qlrdel(time, j, i) ; qlrdel:_FillValue = -999.f ; qlrdel:long_name = "sum hourly rainfall at surface" ; qlrdel:structure = "7211" ; qlrdel:units = "mm" ; qlrdel:cell_methods = "time: sum j: i: mean" ; qlrdel:coordinates = "lon lat" ; float sfcnetl(time, j, i) ; sfcnetl:_FillValue = -999.f ; sfcnetl:long_name = "net surface longwave radiation" ; sfcnetl:standard_name = "surface_net_downward_longwave_flux" ; sfcnetl:structure = "7400" ; sfcnetl:units = "W m-2" ; sfcnetl:cell_methods = "time: point j: i: mean" ; sfcnetl:coordinates = "lon lat" ; float sfcnets(time, j, i) ; sfcnets:_FillValue = -999.f ; sfcnets:long_name = "net surface shortwave radiation" ; sfcnets:standard_name = "surface_net_downward_shortwave_flux" ; sfcnets:structure = "7401" ; sfcnets:units = "W m-2" ; sfcnets:cell_methods = "time: point j: i: mean" ; sfcnets:coordinates = "lon lat" ; float rhosum(time, k, j, i) ; rhosum:_FillValue = -999.f ; rhosum:long_name = "total air density" ; rhosum:standard_name = "air_density" ; rhosum:structure = "4003" ; rhosum:units = "kg m-3" ; rhosum:cell_methods = "time: point k: j: i: mean" ; rhosum:coordinates = "lon lat" ; float bqlrdel_t(time, k, j, i) ; bqlrdel_t:_FillValue = -999.f ; bqlrdel_t:long_name = "sum hourly rainfall amount at building surface roofs" ; bqlrdel_t:structure = "7217" ; bqlrdel_t:units = "mm" ; bqlrdel_t:cell_methods = "time: sum k: j: i: mean" ; bqlrdel_t:coordinates = "lon lat" ; float zqvsum(time, k, j, i) ; zqvsum:_FillValue = -999.f ; zqvsum:long_name = "total specific humidity" ; zqvsum:standard_name = "specific_humidity" ; zqvsum:structure = "7003" ; zqvsum:units = "kg kg-1" ; zqvsum:cell_methods = "time: point k: j: i: mean" ; zqvsum:coordinates = "lon lat" ; float x_wind(time, k, j, i) ; x_wind:_FillValue = -999.f ; x_wind:long_name = "x wind" ; x_wind:standard_name = "x_wind" ; x_wind:structure = "2003" ; x_wind:units = "m s-1" ; x_wind:cell_methods = "time: point k: j: i: mean" ; x_wind:coordinates = "lon lat" ; float y_wind(time, k, j, i) ; y_wind:_FillValue = -999.f ; y_wind:long_name = "y-wind" ; y_wind:standard_name = "y_wind" ; y_wind:structure = "2103" ; y_wind:units = "m s-1" ; y_wind:cell_methods = "time: point k: j: i: mean" ; y_wind:coordinates = "lon lat" ; float z_wind(time, k, j, i) ; z_wind:_FillValue = -999.f ; z_wind:long_name = "z wind" ; z_wind:standard_name = "upward_air_velocity" ; z_wind:structure = "2200" ; z_wind:units = "m s-1" ; z_wind:cell_methods = "time: point k: j: i: mean" ; z_wind:coordinates = "lon lat" ; float P_total(time, k, j, i) ; P_total:_FillValue = -999.f ; P_total:long_name = "total air pressure" ; P_total:standard_name = "air_pressure" ; P_total:structure = "3400" ; P_total:units = "Pa" ; P_total:cell_methods = "time: point k: j: i: mean" ; P_total:coordinates = "lon lat" ; float treal(time, k, j, i) ; treal:_FillValue = -999.f ; treal:long_name = "real air temperature" ; treal:standard_name = "air_temperature" ; treal:structure = "5006" ; treal:units = "degree_C" ; treal:cell_methods = "time: point k: j: i: mean" ; treal:coordinates = "lon lat" ; float rh(time, k, j, i) ; rh:_FillValue = -999.f ; rh:long_name = "relative humidity" ; rh:standard_name = "relative_humidity" ; rh:structure = "7006" ; rh:units = "1" ; rh:cell_methods = "time: point k: j: i: mean" ; rh:coordinates = "lon lat" ; float qlcsum(time, k, j, i) ; qlcsum:_FillValue = -999.f ; qlcsum:long_name = "total cloud water content" ; qlcsum:structure = "7103" ; qlcsum:units = "kg kg-1" ; qlcsum:cell_methods = "time: point k: j: i: mean" ; qlcsum:coordinates = "lon lat" ; float qlrsum(time, k, j, i) ; qlrsum:_FillValue = -999.f ; qlrsum:long_name = "total rain water content" ; qlrsum:structure = "7203" ; qlrsum:units = "kg kg-1" ; qlrsum:cell_methods = "time: point k: j: i: mean" ; qlrsum:coordinates = "lon lat" ; float i_bnds(i, nv) ; i_bnds:_FillValue = NaNf ; float j_bnds(j, nv) ; j_bnds:_FillValue = NaNf ; float k_bnds(k, nv) ; k_bnds:_FillValue = NaNf ; float swecont(time, j, i) ; swecont:_FillValue = -999.f ; swecont:long_name = "snow water equivalent" ; swecont:standard_name = "lwe_thickness_of_surface_snow_amount" ; swecont:structure = "1101" ; swecont:units = "m" ; swecont:cell_methods = "time: point j: i: mean" ; swecont:coordinates = "lon lat" ; float albedo(time, j, i) ; albedo:_FillValue = -999.f ; albedo:long_name = "surface albedo" ; albedo:standard_name = "surface_albedo" ; albedo:structure = "1910" ; albedo:units = "1" ; albedo:cell_methods = "time: point j: i: mean" ; albedo:coordinates = "lon lat" ; float yz0cls(time, j, i) ; yz0cls:_FillValue = -999.f ; yz0cls:long_name = "surface roughness length" ; yz0cls:standard_name = "surface_roughness_length" ; yz0cls:structure = "1911" ; yz0cls:units = "m" ; yz0cls:cell_methods = "time: point j: i: mean" ; yz0cls:coordinates = "lon lat" ; float rhosnow(time, j, i) ; rhosnow:_FillValue = -999.f ; rhosnow:long_name = "snow density" ; rhosnow:standard_name = "surface_snow_density" ; rhosnow:structure = "1912" ; rhosnow:units = "kg m-3" ; rhosnow:cell_methods = "time: point j: i: mean" ; rhosnow:coordinates = "lon lat" ; float x_utm(j, i) ; x_utm:_FillValue = NaNf ; x_utm:long_name = "easting" ; x_utm:standard_name = "projection_x_coordinate" ; x_utm:units = "m" ; x_utm:coordinates = "lat lon" ; float y_utm(j, i) ; y_utm:_FillValue = NaNf ; y_utm:long_name = "northing" ; y_utm:standard_name = "projection_y_coordinate" ; y_utm:units = "m" ; y_utm:coordinates = "lat lon" ; float time(time) ; time:_FillValue = NaNf ; time:long_name = "time" ; time:standard_name = "time" ; time:axis = "T" ; time:units = "seconds since 2000-01-21" ; time:calendar = "standard" ; double lon(j, i) ; lon:_FillValue = NaN ; lon:long_name = "longitude" ; lon:standard_name = "longitude" ; lon:units = "degrees_east" ; double lat(j, i) ; lat:_FillValue = NaN ; lat:long_name = "latitude" ; lat:standard_name = "latitude" ; lat:units = "degrees_north" ; float i(i) ; i:_FillValue = NaNf ; i:long_name = "i position" ; i:axis = "X" ; i:units = "m" ; i:bounds = "i_bnds" ; float j(j) ; j:_FillValue = NaNf ; j:long_name = "j position" ; j:axis = "Y" ; j:units = "m" ; j:bounds = "j_bnds" ; double k(k) ; k:_FillValue = NaN ; k:long_name = "model level" ; k:axis = "Z" ; k:positive = "up" ; k:units = "1" ; // global attributes: string :comment = "This dataset was used in Samsel et al. 2025 (under review) which was financed within the framework of the Helmholtz Institute for Climate Service Science (HICSS), a cooperation between Climate Service Center Germany (GERICS) and the University of Hamburg, Germany, and conducted as part of the WINTER project (Investigating climate change related impacts on the urban winter climate of Hamburg). This work was partly funded by the Deutsche Forschungsgemeinschaft (DFG, German Research\nFoundation) under Germany’s Excellence Strategy – EXC 2037 ‘CLICCS – Climate, Climatic Change, and Society’ – Project Number: 390683824. The work contributes to the Center for Earth System Research and Sustainability (CEN) of University of Hamburg." ; :contact = "David Grawe, Meteorological Insitute (MI) University of Hamburg (UHH), david.grawe@
null uni-hamburg.de
https://orcid.org/0000-0003-4961-2000 " ; :Conventions = "CF-1.8 ATMODAT-3.0" ; :creation_date = "2025-04-08T16:31:26" ; :creator = "Karolin S. Samsel, Climate Service Center Germany (GERICS), Helmholtz-Zentrum Hereon, karolin.samsel@
null hereon.de
https://orcid.org/0009-0005-5543-9920 " ; :frequency = "5sPT, 300sPT" ; :geospatial_lat_resolution = "3 m" ; :geospatial_lon_resolution = "3 m" ; :geospatial_vertical_resolution = "3 m" ; :institution = "Climate Service Center Germany (GERICS), Helmholtz-Zentrum Hereon" ; :institution_id = "https://ror.org/03qjp1d79 " ; :keywords = "EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > LIQUID PRECIPITATION > RAIN, EARTH SCIENCE > ATMOSPHERE > PRECIPITATION > SNOW WATER EQUIVALENT, EARTH SCIENCE >ATMOSPHERE > PRECIPITATION > SOLID PRECIPITATION > SNOW, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE TEMPERATURE > BOUNDARY LAYER TEMPERATURE, EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDSU/V WIND COMPONENTS, EARTH SCIENCE > HUMAN DIMENSIONS > HUMAN SETTLEMENTS > URBAN AREAS, urban canopy layer" ; :keywords_vocabulary = "GCMD, GCMD, GCMD, GCMD, GCMD, GCMD, UNTERM" ; :license = "CC BY 4.0" ; :metadata_link = "tba" ; :processing_level = "Model output, adapted to be conformant with the ATMODAT standard version 3.0" ; :product_version = "1.0" ; :program = "HICSS WINTER" ; :project = "UHH_MI_MEMI" ; :realm = "atmos" ; :references = "Samsel et al., 2025: A method for assessing model extensions: Application to modelling winter precipitation with a microscale obstacle-resolving meteorological model (MITRAS v4.0), in review; Ferner et al., 2023: Modelling the heterogeneity of rain in an urban neighbourhood with an obstacle-resolving model, doi: 10.1127/metz/2022/1149; Salim et al., 2018: The microscale obstacle-resolving meteorological model MITRAS v2.0: model theory, doi: https://doi.org/10.5194/gmd-11-3427-2018 ; Schluenzen et al., 2018: Technical Documentation of the Multiscale Model System M-SYS, https://www.mi.uni-hamburg.de/en/arbeitsgruppen/memi/modelle/dokumentation.html " ; :source = "MITRAS vers3.0 f8425cbd, vers3.1 1d8442b4, vers3.3 2571903c" ; :standard_name_vocabulary = "CF Standard Name Table v78" ; :summary = "This dataset contains the results of nine simulations performed for the validation of the snow cover and precipitation scheme used in the microscale, obstacle-resolving model MITRAS v3.0 (Salim et al., 2013; Schluenzen et al., 2018), v3.1 (Ferner et al. 2023), and v3.3 (Samsel et al. 2025, in review). The model domain extends 240 m x 210 m horizontally and includes orography, slanted roofs, obstacle corners and different surface cover classes. The simulations were performed using different model versions, initial temperatures, precipitation and processing modes. The simulations cover 62 minutes model time, starting at 7:30 am model time, with a temporal resolution of 5 seconds or 5 minutes. This dataset contains a selection of output variables, control variables are not included." ; :title = "Simulations for assessing model extensions using an obstacle-resolving model" ; :geospatial_bounds = "POLYGON (( 84 6, 84 12, 0 12, 0 6, 84 6))" ; :geospatial_bounds_crs = "EPSG:32632" ; }