ISCCP Radiance Calibration Report

TABLE OF CONTENTS

                                                         Page No.

1. INTRODUCTION..............................................1


2. CALIBRATION PROCEDURES:

   2.1. OVERVIEW.............................................2
   2.2. EVIDENCE FOR PROBLEMS................................2
        2.2.1. GEOSTATIONARY RADIOMETER CALIBRATION..........2
        2.2.2. POLAR ORBITER RADIOMETER CALIBRATION..........3


3. CHANGES TO GEOSTATIONARY NORMALIZATION PROCEDURES.........8


4. CHANGES TO POLAR ORBITER NORMALIZATION AND
   MONITORING PROCEDURES:...................................10

   4.1. VISIBLE RADIANCES (AVHRR CHANNEL 1).................10
   4.2. INFRARED RADIANCES (AVHRR CHANNEL 4)................11


5. CHANGES TO ABSOLUTE CALIBRATIONS:........................16

   5.1. SHIFT TO NOAA-9 REFERENCE STANDARD..................16
   5.2. CHANGE OF AIRCRAFT VISIBLE CALIBRATION FOR NOAA-9...16
   5.3. NOAA-9 IR CALIBRATION...............................16
   5.4. OTHER CALIBRATION CHANGES...........................17


6. CALIBRATION (STAGE BT) DATASETS..........................18


7. REFERENCES...............................................19


8. NEW CALIBRATION TABLES...................................21

   8.1. REPLACEMENTS FOR NOAA TABLES 2.19, 2.20, 2.21,
        2.22, 2.23 AND 2.24, PLUS ADDITIONS FOR NOAA-7,
	NOAA-8 AND NOAA-12..................................23

   8.2. REPLACEMENTS FOR METEOSAT TABLES 3.11, 3.12,
        3.13 AND 3.14 PLUS ADDITIONS FOR METEOSAT-5.........34

   8.3. REPLACEMENTS FOR GOES TABLES 4.8, 4.9, 4.10,
        4.11 AND 4.12.......................................48

   8.4. REPLACEMENTS FOR GMS TABLES 5.9, 5.10, 5.11,
        5.12, 5.13 AND 5.14.................................58

   8.5. REPLACEMENTS FOR INSAT TABLES 6.3 AND 6.4...........70

GLOSSARY OF ACRONYMS

AVHRR     Advanced Very High Resolution Radiometer
ESA       European Space Agency
GMS       Geostationary Meteorological Satellite
GOES      Geostationary Operational Environmental Satellite
ICSU      International Council of Scientific Unions
IFOV      Instantaneous Field of View
INSAT     Indian National Satellite System
IR        Infrared
ISCCP     International Satellite Cloud Climatology Project
JMA       Japan Meteorological Agency
NOAA      National Oceanic and Atmospheric Administration
TIROS-N   Television Infrared Operational Satellite
VAS       VISSR Atmospheric Sounder
VHRR      Very High Resolution Radiometer
VIS       Visible
VISSR     Visible Infrared Spin-Scan Radiometer
WCRP      World Climate Research Program
WMO       World Meteorological Organization
WV        Water Vapor

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ISCCP Project Documents: Radiance Calibrations