NUMBER 111

DATE: 11/04/92

Sector Processing Center (SPC):

During September, NOA, JMA, AES and ESA processed greater than 98% of A data into B1/B2 data.Normal operations were reported by NOA, JMA and AES.ESA operated METEOSAT-5 from 1000 UTC on 8 September through 0730 UTC on 24 September; operations by METEOSAT-4 resumed at 0730 UTC on 24 September. CSU shipped B2 data for METEOSAT-3 at 50W for May - September 92 to the GPC. The main collection is through NOAA's retransmission by domestic communication satellite, but the VDUC system (a direct link from Wallops to NOAA) is being used as the backup system. Two differences are noticed between the two sources of data: the VDUC images do not include the IR fine adjustment factor that eliminates most spurious diurnal variations in calibration and the navigation of these images is shifted by 2 pixels westward and 1 pixel northward compared with the DOMSAT retransmission.

Special Area Processing Center (SAPC):

No reports were received.

Satellite Calibration Center (SCC):

The SCC received AC data for August for NOAA-11, for August and September 92 for GOES-7, and for September 92 for GMS-4, MET-3 and MET-4. BC data for GOES-7 for May - June 92 and for GMS-4 and METEOSAT-4 for July 92 were sent to the GPC this month.

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 METEOSAT-4 (preliminary) B3 data is current.METEOSAT-3 (at 50W) data were received from CSU covering the period from May - September 92. Previous testing of formatting software indicated no difficulties with the format; however, the existence of a navigation shift and absence of the IR fine adjustment factor require some investigation to develop correction procedures.Production of GOES-7 (preliminary) B3 data is current. A replacement dataset for January 92 was received from AES.Production of GMS-4 (preliminary) B3 data is current.Production of all INSAT-1 (preliminary) B3 data has been completed. Work is underway to determine final calibrations.The GPC is producing a calibration dataset that contains all the radiance calibration tables from the B3 data. The calibration datasets through June 91 have been completed for GOES-5, GOES-6, NOAA-7, NOAA-8, NOAA-9, NOAA-10, NOAA-11, METEOSAT-2, METEOSAT-3 and METEOSAT-4, GMS-1, GMS-2, GMS-3 and GMS-4. Remaining datasets are for GOES-7 and INSAT.Production of the ice/snow correlative dataset is current. Re-processing of the whole TOVS dataset has now been completed for July 83 through June 85.Production of C1/C2 data has resumed. Data for January 91 have been completed and shipped to the ICA.

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 50 W), METEOSAT-4, METEOSAT-5, GOES-7, NOAA-11, and NOAA-12 remained good. A tentative launch date for NOAA-I (replacement for NOAA-11) has been set for June 93.

Stage B3: July 83 - June 91Stage CD: July 83 - December 91Stage C1: July 83 - January 91Stage C2: July 83 - December 90

Delivering the backlog of GOES-7 B1/B2 data for February, March, April, May and June 92 to the GPC.Delivery backlog for B3 data = 9 months (with respect to planned schedule). B3 data for 96 months have been archived.Delivery backlog for C1/C2 data = 14 months (with respect to planned schedule). C1 data for 91 months have been archived.