[Technical Contact for the ISCCP: send email.]

• Data Availability
• Correction To Data Products
• Radiance Calibration
• Spectral Responses
• Changes To Software
• Others

• ISCCP anonymous ftp instructions
• Reading EQ grid or SQ grid ASCII data using Notepad
• ISCCP D2
• ISCCP D1

• The BT for METEOSAT-7 from 06/1998 to 09/2001 for IR channel has a couple of systematic errors(have been corrected)
• The clear sky composite for 1.6 micron channel is biased a little low.
• Missing DX Geostationary 1st additional channel [ARAD(1)]
• Spurious satellite zenith angle dependence (artifact in Indian sector)
• Change in land surface pressures from TOVS
• Incorrect snow cover (has been corrected)
• Incorrect precipitable water amounts and surface temperatures (has been corrected)
• Spurious sea ice reports
• Flipped array indices in North Polar DX (has been corrected)
• Spurious land pixels in METEOSAT DX
• D2 versions 0,1,2 contain un-corrected METEOSAT-3 reflectances (has been corrected)
• Cloud top temperature/pressure error
• Change to daily atmospheric temperature profiles
• Error in monthly-mean atmospheric temperature profiles
• Missing GOES-7 visible data
• Error in normalized calibration of GOES-8/9 water vapor channel
• Systematic decrease in surface temperatures due to changes in NOAA operational sounder analysis

CDROMs containing ISCCP D2 data are now available for distribution from the Langley ASDC Archive:

• Period July 1983 - December 1988 (Vol II)
• Period January 1989 - December 1993
• Period January 1994 - December 1998

Back to Home Page