NUMBER 193

DATE: 08/06/99

Sector Processing Center (SPC):

During June, EUM, JMA, CSU and AES processed more than 99% of A data into B1/B2 data.

Normal operations for June were reported by EUM, JMA, CSU and AES.

NOA shipped B2 data for July and August 98 to the GPC this month. CSU shipped GOES-8 B2 for June and July 95 this month.

CSU is still supplying the AC data for GOES-8 until AES revises their format. AES has reported completion of this revision, but the new format has not be confirmed by the SCC.

Satellite Calibration Center (SCC):

AC data were received for June 99 from GOES-8, GOES-10, METEOSAT-5, METEOSAT-7, GMS-5 and NOAA-14 (AVHRR and HIRS). BC data for April 99 for GOES-8, GOES-10, METEOSAT-5, METEOSAT-7 and GMS-5 were shipped to the GPC.

All BC reports now include normalization for the visible, standard infrared and "split-window" infrared channels (except METEOSAT which does not have a split-window channel), and the "water vapor" channels.

Global Processing Center (GPC):

The GPC continued to receive B2 data, BC data and correlative data in a routine manner.

The hardware upgrade of the tape silo remains incomplete. The situation with the software looks much better; tape reading has been successful. Tape writing cannot be tested yet because we lack the proper cartridges; however, writing of special high density tapes seems to be working. Much more work remains. Large-volume data processing is still on hold.

Production of NOAA-14 (preliminary) B3 data is current as of April 98; B2 data have been received through August 98. Final B3 data have been produced through April 98.

Production of NOAA-12 (preliminary) B3 data is current as of April 98; B2 data have been received through August 98. Final B3 data have been produced through April 98.

GOES-8 B2 data deliveries are current. Limited processing with the new formatter software is underway.

Processing of GOES-9 B2 data (and the GOES-8 B2 data for 95) depends on delivery by CSU of all the B2 data in its new final format. Replacement B2 data for GOES-8 for June and July 95 have been received. The formatting software has been completed, but some testing remains.

Deliveries of B2 data from METEOSAT-5 (at 63E) are current, but processing has not resumed.

Production of METEOSAT-6 (preliminary) B3 data is complete through June 98. Final B3 data have been produced through April 98.

Production of METEOSAT-7 (preliminary) B3 data has not commenced; however, the formatting software has been completed. EUM reported that, due to a late decision to switch the detector used, the documented spectral response functions for METEOSAT-7, published in the latest B3 documentation and posted on the ISCCP Web page, are incorrect. The correct spectral response functions will be posted to the Web page as soon as processing resumes.

Deliveries of B2 data from GMS-5 are current. Final B3 data have been produced through December 95. Further processing is on hold until the software can be ported to workstations and the silo function can be restored.

All B3 processing software and the B3 data formats have been revised to include, as of January 96, the normalization coefficients for all the additional spectral channels.

TOVS correlative data processing is complete through April 98.

Production of the ice/snow correlative dataset is complete through December 97.

The VIS calibration for NOAA-11 has been changed for the period January through September 94 to eliminate a spurious darkening trend, detected in the cloud product results and confirmed by comparison with NOAA-12. The D-data for January - August 94 will be re-processed and replaced.

Calibration anomalies in 94 and early 95 have been resolved and processing of these data has resumed.

The first CDrom of D2 data (for 89-93) has been released and is now available from the GPC or NASA Langley. Another CDrom of D2 data (for 83-88) is being prepared.

Data now available on the Web site are monthly mean data for July 83 through December 93 and climatology results based on the period July 83 through June 94. The ISCCP World Wide Web Home Page can be accessed at URL

ISCCP Central Archive (ICA):

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

The health of GOES-8, GOES-10, GMS-5, METEOSAT-5, METEOSAT-7, NOAA-14 and NOAA-15 remained good. The launch of GOES-L, next in the series, has been delayed until at least October/November this year. The Japanese MTSAT launch has been delayed.

Stage B3: July 83 - April 95 (11.8 years)

Stage CD: July 83 - December 97 (14.5 years)

Stage D1: July 83 - August 94 (11.2 years)

Stage D2: July 83 - August 94 (11.2 years)

* Delivery backlogs for B2 data (NOA = 10 months, CSU = 51 months).

* Delivery backlog for B3 data = 44 months (with respect to planned schedule). B3 data for 142 months have been archived.

* Delivery backlog for new DX/D1/D2 data = 52 months (with respect to planned schedule). D1/D2 data for 134 months have been archived.