experiment

Metadata for 'IPCC DDC AR4 GFDL-CM2.1 PICNTRL run1'

Name
IPCC DDC AR4 GFDL-CM2.1 PICNTRL run1
Acronym
GFDL_CM2.1_PICNTRL_1
Project(s)
IPCC-DDC_AR4 (IPCC Data Distribution Centre : Assessment Report Four data sets)
Summary
These data represent monthly averaged values of selected variables for the
Data Distribution Centre (DDC) of the Intergovernmental Panel on Climate Change (IPCC).
(see also http://www.ipcc-data.org/)
The model output prepared for IPCC Fourth Assessment climate of the Pre-industrial
control experiment (picntrl).
These datasets are available in netCDF and GRIB format.
Initial conditions for this experiment were derived from a multi-step process.
First, an atmosphere + land surface model was spun up with forcing agents at levels
representative of the late 20th century. Second, the spun up atmosphere + land surface
model was coupled to an ocean + sea ice model. Initial conditions for sea ice, ocean
potential temperature and salinity were derived from late 20th century observations.
Forcing agents consistent with year 1860 were applied to the coupled model which was
integrated for a ~220 year adjustment period. Year 1 of the archived CM2.1U_Control-1860_D4
experiment data begins at the end of this adjustment period. CM2.1U_Control-1860_D4
forcing agents representative of conditions circa-1860 include the well-mixed greenhouse
gases (CO2, CH4, N2O), tropospheric and stratospheric O3, tropospheric sulfates, black and
organic carbon, dust, sea salt, solar irradiance, and the distribution of land cover types.
The direct effect of tropospheric aerosols is calculated by the model, but not the
indirect effects.
For this experiment there is only one run available.
For model output data in higher temporal resulution and more variables see
https://esg.llnl.gov:8443/home/publicHomePage.do.
Keyword(s)
GFDL, GFDL-CM2.1, IPCC-AR4, IPCC-DDC, PICNTRL
Location(s)
World (global); Longitude: 0.0 to 360.0 Latitude: -90.0 to 90.0
Spatial Coverage
Longitude: 0.0 to 360.0 Latitude: -90.0 to 90.0 Altitude: 0.0 m to 200.0 hPa
Temporal Coverage
0001-01-01 to 0500-12-31 (model time, 365 days per year)
Size
9.6 GiB (10310873946 Bytes)
Format(s)
'GRIB', 'netCDF, records separated', 'NetCDF'
Progress
in work
Creation Date
2005-07-27
 
 
 

Citation
Geophysical Fluid Dynamics Laboratory/NOAA (GFDL) (2005). IPCC DDC AR4 GFDL-CM2.1 PICNTRL run1. World Data Center for Climate (WDCC) at DKRZ. http://cera-www.dkrz.de/WDCC/ui/Compact.jsp?acronym=GFDL_CM2.1_PICNTRL_1
Accuracy report
model data
Completeness report
complete
Consistency report
consistent as the model is
Contact type Person Institute
investigator Geophysical Fluid Dynamics Laboratory/NOAA
metadata Nadine Schneider Max-Planck-Institut fuer Meteorologie (MD)
metadata reviewer Dr. Hans Luthardt Max-Planck-Institut fuer Meteorologie (MD)
Reference type Title Published
PubProvEntryData Performance metrics for climate models DOI 2008-03-20
WebSite IPCC Model Output 2004-09-26
standard citation IPCC DDC AR4 GFDL-CM2.1 PICNTRL run1 2005-07-27