The IPCC Data Distribution Centre
ECHAM4/OPYC3 Description

The coupled global model ECHAM4/OPYC3 was developed in co-operation between the Max-Planck-Institut for Meteorology (MPI) and Deutsches Klimarechenzentrum (DKRZ) in Hamburg, Germany. Both models are documented separately. The documentations can be downloaded from the M&D WWW-Server as PostScript-Files:

The atmospheric general circulation model ECHAM-4:
Model description and simulation of present-day climate (1996)
(see Report No. 218)
(to be ordered from the MPI-M)

Report No.6
ECHAM3 - Atmospheric General Circulation Model
Editor: DKRZ-Model User Support Group, October 1992
Postscriptfile (1.5 MB)

Report No.7
The OPYC Ocean General Circulation Model
Joseph M. Oberhuber, October 1992
Postscriptfile (3.9 MB)

A description of the ECHAM4 model is available from the AMIP pages:
ECHAM4 model description external link !

Model topography ASCII or PostScript
Land-sea mask ASCII or PostScript
Grid definition
OPYC3 summary page