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wdc-climate.de:2087053 eng; USA collection CLM_B1_2_D2 Dr. Claudia Wunram Climate Service Center Germany http://www.climate-service-center.de pointOfContact Dr. Michael Lautenschlager Deutsches Klimarechenzentrum http://www.dkrz.de/ pointOfContact 2006-10-19T14:19:19 ISO 19115 ISO 19115-2:2009 Climate Simulation with CLM, Scenario B1 run no.2, Data Stream 2: European region MPI-M/MaD 2009-04-02 publication 1 CLM_B1_2_D2 doi:10.1594/WDCC/CLM_B1_2_D2 Dr. Michael Lautenschlager Max Planck Institute for Meteorology http://www.mad.zmaw.de/ Email: lautenschlager@dkrz.de principalInvestigator Dr. rer. nat. Klaus Keuler Max Planck Institute for Meteorology http://www.mad.zmaw.de/ Email: keuler@tu-cottbus.de principalInvestigator Martina Schubert-Frisius Max Planck Institute for Meteorology http://www.mad.zmaw.de/ Email: Martina.Schubert-Frisius@hzg.de originator Ulrich Schlese Max Planck Institute for Meteorology http://www.mad.zmaw.de/ Email: data@dkrz.de originator Dr. rer. nat. Klaus Keuler Brandenburg University of Technology http://www.tu-cottbus.de/meteo Email: keuler@tu-cottbus.de author Dr. Michael Lautenschlager Max Planck Institute for Meteorology http://www.mpimet.mpg.de/ Email: lautenschlager@dkrz.de author Dr. Claudia Wunram Max Planck Institute for Meteorology http://www.mpimet.mpg.de/ Email: sga@dkrz.de author Dr. Elke Keup-Thiel Max Planck Institute for Meteorology http://www.mpimet.mpg.de/ Email: sga@dkrz.de author Martina Schubert-Frisius Max Planck Institute for Meteorology http://www.mpimet.mpg.de/ Email: Martina.Schubert-Frisius@hzg.de author Dr. Andreas Will Brandenburg University of Technology http://www.tu-cottbus.de/meteo Email: will@tu-cottbus.de author Dr. Burkhardt Rockel Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH not filled Email: Burkhardt.Rockel@hzg.de author Dr. Uwe Boehm Potsdam-Institut fuer Klimafolgenforschung http://www.pik-potsdam.de Email: Uwe.Boehm@pik-potsdam.de author WDC Climate at DKRZ publisher The experiment CLM_B1_2_D2 contains European regional climate simulations of the years 2001-2100 on a rotated grid (CLM non hydrostatic, 0.165 deg. hor. res., see http://www.clm-community.eu ). It is forced by the second (_2_) run of the global IPCC scenario B1 (EH5-T63L31_OM-GR1.5L40_B1_2_6H), which describes a possible future world with global population peaking in mid-century and rapid change in economic structures towards a service and information economy. An introduction of clean and resource efficient technologies was assumed. In data stream 2 (_D2) the output variables of CLM are stored as time series on a rotated grid. The model region starts at -20.8725/-23.7275 (lat/lon in rotated coordinates; centre of lower left grid box) with rotated North Pole at 39.25/-162.0 (lat/lon). The number of grid points is 255/241 (lat/lon). The sponge zone (numerically unreliable boundary grid points) of the original model output has been cut off. The regional model variables include two-dimensional near surface fields, as well as soil and atmospheric fields on different layers. The soil fields are simulated on 10 different levels with a maximum depth of 15 meters. The atmospheric fields are given on 6 pressure levels (200, 500, 700, 850, 925 and 1000 hPa). The time interval of the output fields ranges from 1 to 3 hours and includes daily output fields, depending on the respective variables. Please contact sga"at"dkrz.de for data request details. See http://sga.wdc-climate.de for more details on CLM simulations in the context of the BMBF funding priority "klimazwei", some useful information on handling climate model data and the data access regulations. The output format is netCDF Experiment with CLM 2.4.11 on NEC-SX6(hurrikan) raw data: hpss:/dxul/ut/k/k204095/prism/experiments/B1_2 Dr. Michael Lautenschlager Deutsches Klimarechenzentrum http://www.dkrz.de/ pointOfContact NetCDF CLM_SGA climate simulation regional modelling work group use: work group only CLM constraints: See CLM_README https://www.wdc-climate.de/ui/entry?acronym=CLM_README eng; USA -37.0346 59.9219 26.1197 71.9525 calendrical 2001-01-01 2100-12-31 surface_downward_latent_heat_flux The surface called "surface" means the lower boundary of the atmosphere. "Downward" indicates a vector component which is positive when directed downward (negative upward). 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 air_pressure_at_sea_level sea_level means mean sea level, which is close to the geoid in sea areas. Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL.[CF-Standard Name]; unit: Pa large_scale_rainfall_amount "Amount" means mass per unit area.[CF-Standard Name]; unit: kg m-2 lwe_thickness_of_surface_snow_amount The surface called "surface" means the lower boundary of the atmosphere. "lwe" means liquid water equivalent. "Amount" means mass per unit area. 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. Surface amount refers to the amount on the ground, excluding that on the plant or vegetation canopy.[CF-Standard Name]; unit: m surface_temperature The surface called "surface" means the lower boundary of the atmosphere. The surface temperature is the (skin) temperature at the interface, not the bulk temperature of the medium above or below. [CF-Standard Name]; unit: K vegetation_area_fraction "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. "Vegetation" means any plants e.g. trees, shrubs, grass.[CF-Standard Name]; unit: 0-1 surface_altitude 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 lwe_thickness_of_frozen_water_content_of_soil_layer "frozen_water" means ice. "lwe" means liquid water equivalent. 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. "Content" indicates a quantity per unit area. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. Quantities defined for a soil layer must have a vertical coordinate variable with boundaries indicating the extent of the layer(s).[CF-Standard Name]; unit: m duration_of_sunshine The WMO definition of sunshine is that the surface incident radiative flux from the solar beam (i.e. excluding diffuse skylight) exceeds 120 W m-2. "Duration" is the length of time for which a condition holds.[CF-Standard Name]; unit: s air_temperature-at2m Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name-vertical_coordinate]; unit: K change_over_time_in_atmospheric_water_content_due_to_advection 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. "change_over_time_in_X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. "Content" indicates a quantity per unit area. "Water" means water in all phases.[CF-Standard Name]; unit: kg m-2 convective_cloud_top_altitude cloud_top refers to the top of the highest cloud. Altitude is the (geometric) height above the geoid, which is the reference geopotential surface. The geoid is similar to mean sea level. Convective cloud is that produced by the convection schemes in an atmosphere model.[CF-Standard Name]; unit: m root_depth Depth is the vertical distance below the surface. The root depth is maximum depth of soil reached by plant roots, from which they can extract moisture.[CF-Standard Name]; unit: m longitude_of_the_bounds longitude_of_the_bounds [CF-Guidelines for construction]; unit: degree cloud_area_fraction_in_atmosphere_layer-atLowCloudLayer "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover" [CF-Standard Name-vertical_coordinate]; unit: 0-1 wind_speed_of_gust-at10m 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. A gust is a sudden brief period of high wind speed. In an observed timeseries of wind speed, the gust wind speed can be indicated by a cell_methods of maximum for the time-interval. In an atmospheric model which has a parametrised calculation of gustiness, the gust wind speed may be separately diagnosed from the wind speed. [CF-Standard Name-vertical_coordinate]; unit: m s-1 cloud_area_fraction_in_atmosphere_layer-atHighCloudLayer "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover" [CF-Standard Name-vertical_coordinate]; unit: 0-1 surface_air_pressure The surface called "surface" means the lower boundary of the atmosphere.[CF-Standard Name]; unit: Pa dew_point_temperature-at2m Dew point temperature is the temperature at which a parcel of air reaches saturation upon being cooled at constant pressure and specific humidity.[CF-Standard Name-vertical_coordinate]; unit: K specific_humidity "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air.[CF-Standard Name]; unit: kg kg-1 net_downward_shortwave_flux_in_air "shortwave" means shortwave radiation. "Downward" indicates a vector component which is positive when directed downward (negative upward). Net downward radiation is the difference between radiation from above (downwelling) and radiation from below (upwelling). 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 atmosphere_specific_convective_available_potential_energy "specific" means per unit mass. Potential energy is the sum of the gravitational potential energy relative to the geoid and the centripetal potential energy. (The geopotential is the specific potential energy.) Convective(ly) available potential energy is often abbreviated as "CAPE".[CF-Standard Name]; unit: J kg-1 canopy_water_amount "Amount" means mass per unit area. "Water" means water in all phases, including frozen i.e. ice and snow. "Canopy" means the plant or vegetation canopy. The canopy water is the water on the canopy.[CF-Standard Name]; unit: kg m-2 atmosphere_water_vapor_content "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. Atmosphere water vapor content is sometimes referred to as "precipitable water", although this term does not imply the water could all be precipitated.[CF-Standard Name]; unit: kg m-2 surface_albedo The surface called "surface" means the lower boundary of the atmosphere.[CF-Standard Name]; unit: 0-1 surface_geopotential The surface called "surface" means the lower boundary of the atmosphere. Geopotential is the sum of the specific gravitational potential energy relative to the geoid and the specific centripetal potential energy. [CF-Standard Name]; unit: m2 s-2 coriolis_parameter coriolis parameter [CF-Standard Name]; unit: s-1 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: m s-1 geopotential Geopotential is the sum of the specific gravitational potential energy relative to the geoid and the specific centripetal potential energy.[CF-Standard Name]; unit: m2 s-2 cloud_area_fraction_in_atmosphere_layer-atMediumCloudLayer "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover" [CF-Standard Name-vertical_coordinate]; unit: 0-1 atmosphere_convective_mass_flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The atmosphere convective mass flux is the vertical transport of mass for a field of cumulus clouds or thermals, given by the product of air density and vertical velocity. For an area-average, cell_methods should specify whether the average is over all the area or the area of updrafts only.[CF-Standard Name]; unit: kg m-2 s-1 freezing_level_altitude 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 equivalent_pressure_of_atmosphere_ozone_content "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. The equivalent pressure of a particular constituent of the atmosphere is the surface pressure exerted by the weight of that constituent alone.[CF-Standard Name]; unit: Pa latitude_of_the_bounds latitude_of_the_bounds [CF-Guidelines for construction]; unit: degree altitude (geometric height on half levels) height (geometric height on half levels) [CF-Standard Name (cell_method)]; unit: m latitude latitude [CF-Standard Name]; unit: degree lagrangian_tendency_of_air_pressure "tendency_of_X" means derivative of X with respect to time. The Lagrangian tendency of a quantity is its rate of change following the motion of the fluid, also called the "material derivative" or "convective derivative". The Lagrangian tendency of air pressure, often called "omega", plays the role of the upward component of air velocity when air pressure is being used as the vertical coordinate. If the vertical air velocity is upwards, it is negative when expressed as a tendency of air pressure; downwards is positive.[CF-Standard Name]; unit: Pa s-1 atmosphere_cloud_condensed_water_content "condensed_water" means liquid and ice. "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. [CF-Standard Name]; unit: kg m-2 dew_point_temperature-at2m Dew point temperature is the temperature at which a parcel of air reaches saturation upon being cooled at constant pressure and specific humidity.[CF-Standard Name-vertical_coordinate]; unit: K surface_downward_sensible_heat_flux The surface called "surface" means the lower boundary of the atmosphere. "Downward" indicates a vector component which is positive when directed downward (negative upward). 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 convective_cloud_base_altitude cloud_base refers to the base of the lowest cloud. Altitude is the (geometric) height above the geoid, which is the reference geopotential surface. The geoid is similar to mean sea level. Convective cloud is that produced by the convection schemes in an atmosphere model.[CF-Standard Name]; unit: m land_area_fraction "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 0-1 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: m s-1 net_downward_longwave_flux_in_air "longwave" means longwave radiation. "Downward" indicates a vector component which is positive when directed downward (negative upward). Net downward radiation is the difference between radiation from above (downwelling) and radiation from below (upwelling). 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 surface_net_downward_shortwave_flux The surface called "surface" means the lower boundary of the atmosphere. "shortwave" means shortwave radiation. "Downward" indicates a vector component which is positive when directed downward (negative upward). Net downward radiation is the difference between radiation from above (downwelling) and radiation from below (upwelling). 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 cloud_area_fraction "X_area_fraction" means the fraction of horizontal area occupied by X. "X_area" means the horizontal area occupied by X within the grid cell. Cloud area fraction is also called "cloud amount" and "cloud cover". The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. The cloud area fraction in a layer of the atmosphere has the standard name cloud_area_fraction_in_atmosphere_layer. [CF-Standard Name]; unit: 0-1 convective_rainfall_amount "Amount" means mass per unit area.[CF-Standard Name]; unit: kg m-2 x_wind-at10m "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-vertical_coordinate]; unit: m s-1 air_temperature-at2m (minimum per 24h) air_temperature-at2m (minimum per day) [CF-Standard Name-vertical_coordinate cell_method:time]; unit: K y_wind-at10m "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-vertical_coordinate]; unit: m s-1 air_pressure-atOzoneMaximum air_pressure-atOzoneMaximum [CF-Standard Name-vertical_coordinate]; unit: Pa convective_snowfall_amount "Amount" means mass per unit area.[CF-Standard Name]; unit: kg m-2 surface_runoff_amount The surface called "surface" means the lower boundary of the atmosphere. "Amount" means mass per unit area. Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage.[CF-Standard Name]; unit: kg m-2 air_temperature-at2m (maximum per 24h) air_temperature-at2m (maximum per day) [CF-Standard Name-vertical_coordinate cell_method:time]; unit: K large_scale_snowfall_amount "Amount" means mass per unit area.[CF-Standard Name]; unit: kg m-2 surface_temperature The surface called "surface" means the lower boundary of the atmosphere. The surface temperature is the (skin) temperature at the interface, not the bulk temperature of the medium above or below. [CF-Standard Name]; unit: K air_temperature-at2m (mean per 24h) air_temperature-at2m (mean per 24h) [CF-Standard Name-vertical_coordinate cell_method:time]; unit: K surface_net_downward_longwave_flux The surface called "surface" means the lower boundary of the atmosphere. "longwave" means longwave radiation. "Downward" indicates a vector component which is positive when directed downward (negative upward). Net downward radiation is the difference between radiation from above (downwelling) and radiation from below (upwelling). 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 cell_area-atSurface "Cell_area" is the horizontal area of a gridcell. [CF-Standard Name-vertical_coordinate]; unit: m2 lwe_thickness_of_moisture_content_of_soil_layer "lwe" means liquid water equivalent. "moisture" means water in all phases contained in soil. 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. "Content" indicates a quantity per unit area. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_level_number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. Quantities defined for a soil layer must have a vertical coordinate variable with boundaries indicating the extent of the layer(s).[CF-Standard Name]; unit: m soil_temperature Soil temperature is the bulk temperature of the soil, not the surface (skin) temperature. [CF-Standard Name]; unit: K leaf_area_index "X_area" means the horizontal area occupied by X within the grid cell.[CF-Standard Name]; unit: 1 surface_specific_humidity The surface called "surface" means the lower boundary of the atmosphere. "specific" means per unit mass. Specific humidity is the mass fraction of water vapor in (moist) air. [CF-Standard Name]; unit: kg kg-1 subsurface_runoff_amount "Amount" means mass per unit area. Runoff is the liquid water which drains from land. If not specified, "runoff" refers to the sum of surface runoff and subsurface drainage.[CF-Standard Name]; unit: kg m-2 air_temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K surface_downwelling_photosynthetic_radiative_flux_in_air The surface called "surface" means the lower boundary of the atmosphere. Downwelling radiation is radiation from above. It does not mean "net downward". Radiative flux is the sum of shortwave and longwave radiative fluxes. "Photosynthetic" radiation is the part of the spectrum which is used in photosynthesis e.g. 300-700 nm. The range of wavelengths could be specified precisely by the bounds of a coordinate of radiation_wavelength. When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". 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 surface_temperature_where_snow The surface called "surface" means the lower boundary of the atmosphere. Unless indicated, a quantity is assumed to apply to the whole area of each horizontal grid box. The qualifier where_type specifies instead that the quantity applies only to the part of the grid box of the named type. The surface temperature is the (skin) temperature at the interface, not the bulk temperature of the medium above or below. [CF-Standard Name]; unit: K surface_roughness_length The surface called "surface" means the lower boundary of the atmosphere.[CF-Standard Name]; unit: m snowfall_limit_altitude Height of the snow fall limit in m above sea [CF-Guidelines for construction]; unit: m soil_type A variable with the standard name of soil_type contains strings which indicate the character of the soil e.g. clay. These strings have not yet been standardised. Alternatively, the data variable may contain integers which can be translated to strings using flag_values and flag_meanings attributes.[CF-Standard Name]; unit: integer longitude longitude [CF-Standard Name]; unit: degree NetCDF 6572794 https://www.wdc-climate.de/ui/entry?acronym=CLM_B1_2_D2 information collection n/a None n/a None