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IPCC 4th Assessment Report (2007): Model NCAR-CCSM3

Agency	National Center for Atmospheric Research (NCAR),
Model name	Community Climate System Model, version 3.0 (CCSM3)
Atmospheric prognostic variables	Vorticity Divergence Temperature Specific humidity Surface pressure Grid box averaged liquid condensate amount Grid box averaged ice condensate amount Nitrous Oxide Methane CFC11 CFC12 SO2 SO4 DMS H2O2
Oceanic prognostic variables	grid-oriented zonal and meridional velocity components vertical velocity pressure density potential temperature salinity ideal age cfc's (included in some integrations but not all)
Atmospheric resolution	T85, L26
Oceanic resolution	L40, 1.125x(0.27-1.0)

Further details from the pcmdi model documentation page

Land sea mask not currently available.

Data Tables

Each block in the table contains links to one or more data files and to one information page (the `info' link) with further information.

The data files are 'tar' files with names of the form [model]_[scenario]_[variable]_[climatology].tar.

The model, scenario and variable are determined by the position in the table.

Each tar file contains several NetCDF files with names of the form: [model]_[scenario]_[ensemble number]_[variable]_[start-year]-[end-year].nc.

Different climatologies are indicated by the links within each table entry.

• 20x: Twenty year averages, +20-39, +46-85, +80-99, +180-199 (as used in Chapt. 10 of IPCC 2007)
• 30a: Thirty year averages, +01-30, +31-60, +61-90 (as used in the observational climatologies)
• 30b: Thirty year averages, +10-39, +40-69, +70-99 (for compatibility with the 3rd Assessment Report)

The averaging period is relative to AD2000 for SRES scenarios A1B, A2 and B1, relative to AD1900 for the twentieth century run (20C3M) and relative to the start of the experiment for the pre-industrial control (PICTL) and the 1PCTO2X and 1PCTO4X runs.

Data available

	Scenario
Variable	1PTO2X	1PTO4X	20C3M	COMMIT	PICTL	SRA1B	SRA2	SRB1
specific humidity	20x; 30a; 30b; info	20x; 30a; 30b; info	30a; info	20x; 30b; info	20x; 30a; 30b; info	20x; 30b; info	20x; 30b; info	20x; 30b; info
precipitation flux	20x; 30a; 30b; info	20x; 30a; 30b; info	30a; info	20x; 30b; info	20x; 30a; 30b; info	20x; 30b; info	20x; 30b; info	20x; 30b; info
air pressure at sea level	20x; 30a; 30b; info	20x; 30a; 30b; info	30a; info	20x; 30b; info	20x; 30a; 30b; info	20x; 30b; info	20x; 30b; info	20x; 30b; info
net upward shortwave flux in air	20x; 30a; 30b; info	20x; 30a; 30b; info	30a; info	20x; 30b; info	20x; 30a; 30b; info	20x; 30b; info	20x; 30b; info	20x; 30b; info
air temperature	20x; 30a; 30b; info	20x; 30a; 30b; info	30a; info	20x; 30b; info	20x; 30a; 30b; info	20x; 30b; info	20x; 30b; info	20x; 30b; info
air temperature daily max	--	--	--	20x; 30b; info	--	--	--	20x; 30b; info
air temperature daily min	--	--	--	20x; 30b; info	--	--	--	20x; 30b; info

Location: DDC Home > Models: Summary Data > AR4 (2007): SRES scenarios

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