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Metadata for CERA experiment 'BCCR_BCM2.0_20C3M_1'
Title
IPCC DDC AR4 BCCR-BCM2.0 20C3M run1
Citation
not filled, 2005: IPCC DDC AR4 BCCR-BCM2.0 20C3M run1. World Data Center for Climate. CERA-DB "BCCR_BCM2.0_20C3M_1"
http://cera-www.dkrz.de/WDCC/ui/Compact.jsp?acronym=BCCR_BCM2.0_20C3M_1
Creation Date
2005-07-20
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 20th Century experiment (20C3M).
These datasets are available in netCDF and GRIB format.
Experiment was initiated from model year 85 (nominal year 1850) of the control simulation. The time varying forcing agents were varied based upon observations and reconstructions for the late 19th and 20th centuries.
Varying forcing agents: CO2,CH4,N2O,CFC11(including other CFCs and HFCs),CFC12 and sulfate aerosols (Boucher data, only direct effect).
Non-varying forcing agents: Background aerosols: black carbon,sea salt,desert dust, stratospheric and tropospheric ozone, solar irradiance (1368 W/m2) and the distribution of land cover types.
No volcanic aerosols. No heat or fresh water adjustments.
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 - 31/12/1999 (calendrical)
Data Format(s)
netCDF, records separated GRIB netCDF
Datasize
2482560124 Bytes
Contact
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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.
