The SRES data sets were published by the IPCC in 2000 and classified

into four different scenario families (A1, A2, B1, B2).

SRES_A2 storyline describes a very heterogeneous world

with the underlying theme of self-reliance and preservation

of local identities. It results in this scenario a continous

increasing population together with a slower economic growth

and technological change.

The atmospheric component AGCM2 is a spectral model with

triangular truncation at wave no. 32 and 10 vertical levels.

The ocean model component based on the GFDL MOM 1.1 code

with 29 vertical levels and has a isopycnal / eddy stirring

parameterization (Gent and McWilliams, 1990).

CGCM2 (http://ec.gc.ca/ccmac-cccma/default.asp?lang=En&n=40D6024E-1 ).

The changes of anthropogenic emissions of CO2, CH4, N2O and

sulphur dioxide are prescribed according to the above

mentioned scenario.

These data belongs to a set of three ensemble runs, with the

CCCma-model, using the SRES_A2 scenario. They provide monthly

averaged values of selected variables for the IPCC-DDC.