NUMBER 68
DATE: 04/04/89
Sector Processing Center (SPC):
During February, NOA, ESA, JMA and AES collectively processed greater than 90% of A data into B1/B2 data.
Normal operations were reported by NOA and JMA.
Delivery of the NOAA-10 backlog is now complete through November 87; current delivery began in August 88 and is up to date.
ESA reported that all IR data for 1 February and up to 1200 UTC on 2 February are suspect because of the effect of the decontamination exercise conducted in late January. MOP-1 (re-named METEOSAT-4) was successfully launched at 23:29 UTC on 6 March and is now drifting towards its final position. Operations with this satellite are planned to begin at the end of May.
AES reported the loss of two days of data because of small problems in the new data ingest system.
However, data capture in February was over 90%, so the new system seems much more reliable.
Special Area Processing Center (SAPC):
No reports were received.
Satellite Calibration Center (SCC):
No report was received.
Global Processing Center (GPC):
The GPC continued to receive B2 data and correlative data in a routine manner.
Re-processing of all NOAA-9 B3 data to correct the small IR count error has been completed through July 85; these data have been delivered to ICA.
Production of GMS-3 B3 data has been completed through June 86; delivery of data beyond December 85 will be delayed until the calibration is thoroughly checked.
Inspection of all B3 data to detect short-term calibration anomalies has been completed for NOAA-7, METEOSAT-2 and GOES-6 through 85; re-processing of these data will begin later this month.
An error in mapping was found in the version of TOVS atmospheric data delivered to the ICA that affects less than 1% of the grid cells; the error is only noticeable as the reporting of temperatures for layers with too high a pressure near the edge of high topography regions. This error has been corrected, the entire TOVS data set (83 through 88) has been re-processed, and new tapes are being prepared for delivery to ICA.
C1 data for May and June 84 have been completed and sent to the ICA; this completes the first year of C1
data. Re-processing has begun to correct several small errors in these data, including the incorrect treatment
of sea ice reflectances. By the end of this month, we should be able to replace the C1 data for July -
September 83 and January 84; in May we plan to replace the C1 data for October - December 83 and
February 84; and in June we plan to replace the remaining C1 data (March - April 84 and April 85). The
remainder of June and all of July will be spent in producing some additional special data sets for FIRE, ICE
and the SRB project and in testing revisions and optimizations of the C1/C2 data production system software
to make it more flexible and reliable. After delivery of the first C2 data, covering July 83 through June 84, full
C-production will resume in August.
ISCCP Central Archive (ICA):
The ICA continued to receive B1 data from NOA, AES, CSU, ESA, and JMA and B3 and C data from the GPC in a routine manner.
In addition to your own comments about the contents of the C2 data; please send to the GPC any suggestions for other people to contact, especially those interested in climate diagnosis studies.
The tenth session of the JSC considered recommendations from several other committees and commissions, including COSPAR and the TOGA SSG, to extend the ISCCP data collection and processing through 1995. The JSC Working Group on Radiative Fluxes conducted an assessment of ISCCP data sets over the past year and reported its findings at the JSC meeting. W. Rossow also presented a briefing of early scientific results (find a copy of his report enclosed). The JSC decided to request the participating agencies to continue their activities in support of ISCCP so as to extend the data set through 1995.
The health of GMS-3, METEOSAT-3, GOES-7, NOAA-10 and NOAA-11 remained good. MOP-1 (re-named METEOSAT-4) was successfully launched on 6 March 1989. Launch of NOAA-D has slipped into February 1990.
Arranging for the delivery of INSAT B1 data.
Delivering snow and sea ice data for 1987 and 1988 to the GPC.
Completing BC data for 1987 and 1988.
Correcting small, short-term calibration anomalies in the B3 data for 1984, 1985 and 1986.
Delivering all B3 data for 1986, 1987 and 1988 to the ICA.
Beginning delivery of C2 data.
Delivery of some special C data sets for FIRE, ICE and the Surface Radiation Budget project.