The SRES data sets were published by the IPCC in 2000 and classified
into four different scenario families (A1, A2, B1, B2).
SRES_A1 storyline describes a future world of very rapid economic
growth, global population that peaks in mid-century and declines
thereafter and the rapid introduction of new and more efficient
It is distinguished by their technological emphasis:
A1FI: fossil intensiv,
A1T : non-fossil energy sources and
A1B : a balance across all sources.
The model developed by the Center for Climate System Resaerch/
National Institute for Enviromental Studies in Tokyo consists
of the atmospheric component which has vertical resolution of
20 levels and the triangular truncation at wavenumber 21 (T21).
The ocean model has 17 vertical levels and the same resolution.
The changes of anthropogenic emissions of CO2, CH4, N2O and
sulphur dioxide are prescribed according to the above