Climate Simulation with CLM, Scenario 20C run no.1, North Atlantic region

The experiment CLM_20C_ZS contains Northern European regional climate simulations of the years 1960-1989 on a rotated grid (CLM non hydrostatic, 0.44 deg. hor. resolution, see http://www.clm-community.eu ). It is forced by the first (_1_) run of the global IPCC SRES 20C (EH5-T63L31_OM-GR1.5L40_20C_1_6H). The data represent 6 hourly values of a 20th century simulation with observed anthropogenic forcings (CO2, CH4, N2O, CFCs, O3 and sulfate).

The model region starts at -19.36/-40.48 (lat/lon in rotated coordinates; centre of lower left corner of the domain) with rotated North Pole at 21.3/-175.0 (lat/lon). The number of grid points is 80/146 (lat/lon). The sponge zone (numerically unreliable boundary grid points) consists of 8 gridboxes at each border. EH5-T63L31_OM-GR1.5L40_20C_1_6H were nudged during the simulations (spectral nudging,von Storch, H., A spectral nudging technique for dynamical downscaling purposes. Mon. Wea. Rev, 2000 )

The regional model variables include two-dimensional near surface fields and atmospheric fields on 6 pressure levels (200, 500, 700, 850, 925 and 1000 hPa) for zonal and meridional wind, temperature and pressure.

The time interval of the output fields is 3 hours.

Please contact sga"at"dkrz.de for data request details.

The output format is netCDF.

Experiment with CLM 2.4.6 on HPC Cluster ( blizzard ).

Date (Publication): 2010-05-12

Edition: 1

Citation identifier: CLM_20C_ZS

Citation identifier: doi:10.1594/WDCC/CLM_20C_ZS

Principal investigator

Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH - Dr. rer. nat. Matthias Zahn
not filled

Author

Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH - Dr. rer. nat. Matthias Zahn
not filled

Publisher

WDC Climate at DKRZ

Point of contact

University of Reading - Dr. rer. nat. Matthias Zahn
http://www.rdg.ac.uk/

Name: NetCDF

Keywords

CLM_SGA

Keywords

climate simulation

Keywords

regional modelling

Use limitation: scientific use: For scientific use only

Language: eng; USA

Begin date: 1960-01-01

End date: 1989-12-31

Distribution format

NetCDF ()

Transfer size: 116098

OnLine resource: https://www.wdc-climate.de/ui/entry?acronym=CLM_20C_ZS

Hierarchy level: collection

Non quantitative attribute accuracy

Name of measure: n/a

Measure description: None

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: m s-1

Attribute description: air_temperature

Descriptor: Air temperature is the bulk temperature of the air, not the surface (skin) temperature. [CF-Standard Name]; unit: K

Attribute description: surface_temperature

Descriptor: 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

Attribute description: geopotential

Descriptor: 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

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: m s-1

Attribute description: air_pressure_at_sea_level

Descriptor: 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