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NCDC > Satellite Data > ISCCP B1 Data Rescue

ISCCP B1 Details

ISCCP B1 files provide observations from geostationary satellites. No retrievals are yet available from the data. Examples of imagery from the data can be found at the Global ISCCP B1 Browse System (GIBBS).


The spatial coverage of the B1 data set is best summarized by this figure. The data set is nearly global in coverage, except for the poles, since most of the data came from the geostationary meteorological satellites postioned on an equatorial plane around the world.

The spatial resolution is about 10 km at the Equator.


The temporal coverage of ISCCP data spans 1979 to present.

The data are subsampled to 3 hourly. That is, the satellite image nearest the synoptic time (00, 03, ..., 21 UTC) is kept in the ISCCP B1 record providing eight observations per day.


Satellite ID Channels
Meteosat 2-7 IR Window, Visible, Water Vapor
Meteosat 8-9 IR Window, Visible, Water Vapor, and 8 more channels
GMS 1-4 IR Window, Visible
GMS 5 IR Window, Visible, Water Vapor, IR Split Window
MTSAT-1R IR Window, Visible, Water Vapor, IR Split Window
SMS 1-2 IR Window, Visible
GOES 1-7 IR Window, Visible
GOES 8-11 IR Window, Visible, Water Vapor, IR Split Window, Near IR
GOES 12 IR Window, Visible, Water Vapor, IR CO2, Near IR
FY2-C IR Window, Visible, Water Vapor, IR Split Window, Near IR

Data Format

Since the original B1 data consists of many different formats, a uniform B1 format (B1U) is being developed which contains all the data within the original B1 files, yet in a consistent format. The B1U format is a flat binary format with headers providing meta-data along with the imagery. Routines are being developed to read B1U files and navigate the imagery. Routines are currently available in Fortran and IDL.
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Last Updated Wednesday, 20-Aug-2008 12:50:09 EDT by
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