NUMBER 82
DATE: 06/05/90
Sector Processing Center (SPC):
During April, NOAA, JMA, AES and ESA processed greater than 98% of A data into B1/B2 data.
Normal operations were reported by NOAA, JMA, AES and ESA.
ESA reported changing from METEOSAT-3 to METEOSAT-4 as the primary satellite after 0900 UTC on 19
April.
Special Area Processing Center (SAPC):
No reports were received.
Satellite Calibration Center (SCC):
New BC data were received for GMS-3 and GOES-7 for April 89 and for METEOSAT-4 for July and October
89 and January 90.
Global Processing Center (GPC):
The GPC continued to receive B2 data and correlative data in a routine manner.
Production of NOAA-11 (preliminary) B3 data is current.
Production of NOAA-10 (preliminary) B3 data is current. Normalization of the Channel 1 and Channel 4
radiances uses the following factors: (Channel 1) slope = 0.850 and intercept = +0.002; (Channel 4) slope =
1.065 and intercept = -20.5K. The Channel 1 sensitivity degrades steadily over the period from December
86 through April 89, but appears to increase subsequently. Re-calibration and delivery of NOAA-10 B3 for
the period December 86 through April 89 has commenced. Final calibration of later data sets will await
intercomparisons with NOAA-11 and the results of NASA ER-2 calibration flights.
Production of GOES-6 (preliminary) B3 data is completed. Re-calibration of GOES-6 B3 data for the period
January 87 through October 88 will commence later this month.
Test production of GOES-7 B3 (preliminary) data has started.
Production of B3 data for GMS-3 is on hold awaiting information about the nominal calibration of GMS-4
(which became operational in Dec 89) and receipt of replacement B2 data for six months in 87 and 88.
Production of (preliminary) B3 data for METEOSAT is current. All replacement B2 data have been received
and processed into B3 format. New calibration reports were received for MET-3 and MET-4 covering the
period beyond January 90, allowing B3 data production to resume.
Production of TOVS correlative data is current; delivery to the ICA of data for 1989 will occur shortly.
C1 data for February and March 86 have been completed. Production of C1 data for April and May 86 is
underway.
ISCCP Central Archive (ICA):
The ICA continued to receive B1 data from NOA, AES, ESA, and JMA and B3 and C data from the GPC in
a routine manner.
The health of GMS-4, METEOSAT-3, METEOSAT-4, GOES-7, NOAA-10 and NOAA-11 remained good.
METEOSAT-4 is now the operational satellite.
The Working Group on Data Management held its 8th session in New York at the GPC from 21-23 May 1990. When originally formed, this JSC Working Group was responsible for data management for ISCCP; but, with the expansion of radiation-related activities in the World Climate Research Program, the Working Group is now responsible for data management for all WCRP radiation projects. This meeting was the first with the expanded membership. In addition to a review of ISCCP status, the Working Group reviewed the status of the Earth Radiation Budget Experiment (ERBE), the Scanning Radiation Budget experiment (SCARAB), the international Surface Radiation Budget project (SRB), and the Global Baseline Radiation Network. Also examined were activities in the Experimental Cloud Lidar Pilot Study (ECLIPS), the First ISCCP Regional Experiment (FIRE), the International Cirrus Experiment (ICE), and the Western North Pacific Experiment (WENPEX). Plans for the Atmospheric Radiation Measurement program of the US Department of Energy were presented. The meeting ended with consideration of the Working Group's role to establish a comprehensive set of calibration standards for the radiation measurements used in these projects and to coordinate data formats.
Beginning delivery of INSAT B2 data.
Delivering replacement GMS B1 data for 1987 to the GPC.
Delivering backlog of NOAA-10 B2 data for October 89 through April 90 to the GPC.
Completing BC data for 1989.
Delivering all B3 data for 1987 and 1988 to the ICA.
Delivering snow and sea ice data for 1989 to the GPC.
Completing C1 data for 1986.
Delivering C2 data for 1983, 1984 and 1985.