NUMBER 126

DATE: 02/07/94

Sector Processing Center (SPC):

During December JMA, CSU and ESA processed greater than 87% of A data into B1/B2 data.Normal operations for December were reported by CSU, JMA and ESA. No report was received from NOA.AES reported collection of 98%, 100%, 89% and 77% of B1/B2 data for September through December, respectively. During November, the receiving antenna had to be moved to a new location, causing loss of data from 1500 UTC on 12 November through 1200 UTC on 13 November; however, the alignment motor was damaged during the move causing loss of signal at 0000 and 0300 UTC every day. The motor was not repaired until 20 December. A file system overflow caused loss of data from 0000 UTC on 29 December through 2100 UTC on 30 December.CSU reported collection of 86% of B1/B2 data from METEOSAT-3 for November. On 15 December, METEOSAT-5 began drifting westward to replace METEOSAT-3 at 75W.

Special Area Processing Center (SAPC):

No report received.

Satellite Calibration Center (SCC):

The SCC received AC data for December 93 for GMS-4. BC data were sent to the GPC for October 93 for GMS-4, for July and October 93 for METEOSAT-4 and for August 93 for GOES-7. Corrected reports for METEOSAT-4 for September and October 92 were also sent.

Global Processing Center (GPC):

The GPC continued to receive B2 data, BC data and correlative data in a routine manner.Production of NOAA-11 (preliminary) B3 data is current.Production of NOAA-12 (preliminary) B3 data is current.Production of GOES-7 (preliminary) B3 data is current. Final checks of the processing software for the UWS replacement B2 data have been completed. The backlog of B2 data deliveries from AES has been eliminated.Production of METEOSAT-3 B3 data continues; B3 data for October 92 through September 93 have been completed. Production is almost up to date; production of the data from May through September 92 awaits delivery of the history of the Fine Gain Adjustment values for the IR channel from ESA. METEOSAT-3 will be replaced by METEOSAT-5 at 75W in the near future.Production of METEOSAT-4 (preliminary) B3 data is current.Production of GMS-4 (preliminary) B3 data is current.Production of all INSAT-1 (preliminary) B3 data has been completed. These data will not be delivered to the ICA until the short-term calibration variations are removed.Production of the ice/snow and TOVS correlative datasets is current.Production of the CX data for INSAT B3 has been completed covering the period from January 86 through March 89. The very large variations in calibration (about 5% rms for VIS and about 5K rms for IR) will have to be removed. Experiments are underway to test the capability for obtaining accurate calibrations.The first full test run of all the new code (for one month of NOA and GMS data) has been completed with all of the "usual" problems. These have been fixed and a second run has commenced to complete a full month of data. Once these results are examined, we will conduct one more test run to cover a whole annual cycle (every three months) and evaluate the changes in cloud properties produced by the new analysis. Full re-processing will commence after these tests.

ISCCP Central Archive (ICA):

The ICA continued to receive B1 data from NOA, AES, ESA, CSU and JMA and B3 and C data from the GPC in a routine manner.

The health of GMS-4, METEOSAT-3 (at 75 W), METEOSAT-4, METEOSAT-5 (moving towards 75W), GOES-7, NOAA-11 and NOAA-12 remained good. The first SCARAB (radiation budget) instrument was successfully launched on the Russian METEOR-3/7 on 25 January 94.

Stage B3: July 83 - June 91Stage CD: July 83 - December 91Stage C1: July 83 - June 91Stage C2: July 83 - June 91

Delivering sea ice correlative data for 92 and 93 to GPC.

Delivery backlog for B3 data = 24 months (with respect to planned schedule). B3 data for 96 months have been archived.

Delivery backlog for C1/C2 data = 24 months (with respect to planned schedule). C1 data for 96 months have been archived.