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Metadata for CERA experiment 'CGCM3.1_T47_PICNTRL_1'
Title
IPCC DDC AR4 CGCM3.1-T47_(med-res) PICNTRL run1
Citation
Flato, 2005: IPCC DDC AR4 CGCM3.1-T47_(med-res) PICNTRL run1. World Data Center for Climate. CERA-DB "CGCM3.1_T47_PICNTRL_1"
http://cera-www.dkrz.de/WDCC/ui/Compact.jsp?acronym=CGCM3.1_T47_PICNTRL_1
Creation Date
2005-07-27
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.
A 50-year integration was conducted using 1985 GHG concentrations and restoring to
climatological SST, SSS, and sea-ice extent in order to estimate annual mean heat and freshwater
flux adjustments. This was followed by a 200-year integration with preindustrial GHG concentrations
to allow the model to approximately equilibrate to a preindustrial climate. The end of this
integration served as the initial condition for the preindustrial control integration,
representing conditions at year 1850. The preindustrial GHG concentrations were taken
to be: CO2=288ppm; CH4=792ppb; N2O=275.5ppb; CFC11=CFC12=0.
For this experiment there is only one run available.
For model output data in higher temporal resulution and more variables visit the
web page https://esg.llnl.gov:8443/home/publicHomePage.do.
Location(s)
World (global); Latitude: -90.0 to 90.0; Longitude: 0.0 to 360.0
Spatial Coverage
Latitude: -90.0 to 90.0; Longitude: 0.0 to 360.0; Altitude: 0.0 m to 200.0 hPa
Temporal Coverage
1/1/1850 - 31/12/2349 (model time, 365 days per year)
Data Format(s)
netCDF, records separated netCDF GRIB
Datasize
7438245728 Bytes
Contact
PhD Gregory M. Flato
Canadian Centre for Climate Modelling and Analysis
n/a, V8W 2Y2 Victoria, Canada
http://www.cccma.bc.ec.gc.ca
Project
IPCC Data Distribution Centre : Assessment Report Four data sets (IPCC-DDC_AR4)
The Intergovernmental Panel on Climate Change (IPCC) has been established by WMO and
UNEP to assess scientific, technical and socio-economic information, relevant
for the understanding of climate change, its potential impacts and option for adaption
and migration. Projection of future trends for a number of key variables are provided
through this section of the DDC (
http://cera-www.dkrz.de/IPCC_DDC/index.html ).
The SRES scenarios have been constructed to explore future developments in the global
enviromental with special reference to the production of greenhouse gases and aerosol
precursor emission.
A set of four scenario families (A1, A2, B1, B2) have been developed that each of this
storylines describes one possible demographic, polito-economic, societal and
technological future. Model experiments, also using different forcing scenarios,
were calculated at other modeling centres.
The data represent a subset of data sets from the IPCC Model Output Archive at
PCMDI (
http://www-pcmdi.llnl.gov/ipcc/about_ipcc.php).
_
These datasets are available in netCDF and GRIB format.
The dataset names are composed of
- centre/model acronym (e.g. MPEH5: Max-Planck-Institute/Echam5)
- scenario acronym (e.g. SRB1: SRES B1)
- run number (e.g. 1: run 1)
- format identifier (e.g. N: netCDF, G: GRIB)
- variable acronym [with level value] (e.g. hur850: relative humidity, 850 hPa)
--> example: MPEH5_SRB1_1_G_hur850
Supplementary info
More information for this CERA experiment is available
here.
