Input data set: Land-sea mask

Protocol relation: Protocol
Data Type: Other
Simulation rounds: ISIMIP2b, ISIMIP2a, ISIMIP Fast Track


The land-sea mask used to create the ISIMIP2b land-only climate input-data files differs from the intended CRU land-sea mask (the land-sea mask of the WATCH forcing data that were used for bias correction in the ISIMIP fast track). The difference pertains to one grid cell only: Antipodes Islands located at 49.75°S, 178.75°W in the CRU land-sea mask and at 49.25°S, 178.75°E in the ISIMIP2b land-sea mask. This mismatch should be irrelavant for most analyses and modelling groups. If necessary, climate input data for the real Chatham Island grid cell can be retrieved from the un-masked climate input data files.

Download Instructions

For ISIMIP participants, these files are available for download on the DKRZ server using the path /ISIMIP/ISIMIP2b/InputData/landseamask/.

For external users, these data will be made available on the ISIMIP ESGF server ( Currently they are available via an rsync facility (described here:, for which the password will be provided upon request (