Expanded Low-resolution Cloud Motion Winds - MFG - Indian Ocean 57 degrees E

Vectors at all heights below the tropopause, derived from the Meteosat First Generation (MFG) IR channel by tracking the motion of clouds. The MFG low resolution 80 x 80 segment matrix (with 32 x 32 pixel segments) is used and vectors are derived by tracking the motion of clouds only; height assignment is based on IR EBBT. Before 2 December 2002 the ELW product derived vectors from all three MFG channels. A typical ELW product contains about 2000 IR vectors.