NUMBER 223 DATE: 02/12/02

Sector Processing Center (SPC):

During December, EUM, JMA, CSU, MSC and NOA processed more than 96% of A data into B1/B2 data.

Normal operations for December were reported by EUM, JMA, CSU, MSC and NOA.

CSU is still supplying the AC data for GOES-8 because the SCC has not accepted the revised format from MSC.

Satellite Calibration Center (SCC):

AC data were received for December 01 from NOAA-16 (AVHRR and HIRS), METEOSAT-5, METEOSAT-7, GMS-5, GOES-8 and GOES-10. BC data for October 01 for METEOSAT-5, METEOSAT-7, GMS-5, GOES-8 and GOES-10 were shipped to the GPC; these are the last results based on NOAA-14.

AC data for GMS are received on CD-rom; all other AC data are received and the BC data are sent via Internet.

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. All of these data are now received by Internet, except for the B2 data from NOA. The ftp delivery of B2 from JMA has commenced. Delivery by ftp of all data (except DX) from the GPC to NOAA/NCDC and to NASA Langley is underway.

NOAA-15 B2 data have been received for January 99 through July 00 (the last). All of the B3 data have been re-processed to resolve the problems with Channel 3 radiances caused by undocumented switches between the 1.6 and 3.7 micron wavelengths and the sun glare.

Deliveries of B2 data from NOAA-16 are current. Processing will require more extensive software changes than for NOAA-15 because of the six channels available.. Also, the cloud detection algorithm and the DX-format will have to be revised before these data can be used.

Deliveries of B2 data from GOES-8 are current. Production of GOES-8 (preliminary) B3 data is complete through July 01, except for two months with missing data (October and November 00). Final B3 data have been produced through December 99.

Deliveries of B2 data from GOES-10 are current. Production of GOES-10 (preliminary) B3 data is complete through December 00, except for two months with missing data (August and November 00). Final B3 data have been produced through December 99.

Deliveries of B2 data from METEOSAT-5 (at 63E) are current. Production of METEOSAT-5 (preliminary) B3 data is complete through September 01, except for April 01 which is missing data. Final B3 data have been produced through December 99.

Deliveries of B2 data from METEOSAT-7 are current. Production of METEOSAT-7 (preliminary) B3 data is compete through September 01. Final B3 data have been produced through December 99.

Deliveries of B2 data from GMS-5 are current. Production of GMS-5 (preliminary) B3 data is complete through December 99. A small change in the B2 data format requires a software change before further processing can proceed. Final B3 data have been produced through December 99.

TOVS correlative data processing is complete through June 00.

Production of the ice/snow correlative dataset is complete through December 99.

DX/D1/D2 data processing is complete through December 99, including re-processing of the NOAA-15 data. Investigations are underway concerning a few minor problems. All data products are currently delivered by ftp to the ICA and NASA Langley (except for DX data).

Two CDs of D2 data are now available from NASA Langley, covering 83-88 and 89-93. A new CD covering 94-98 is planned.

The survey of midlatitude cyclones that merges re-analysis and ISCCP cloud data has been completed covering the period from 1983 through 1998.

Data now available on the Web site are monthly mean data for July 83 through December 99 and climatology results based on the period July 83 through December 99. The radiance calibration tables have been updated through September 01. 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, MSC, 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 and NOAA-16 remained good. METEOSAT-6, GOES-11 and GOES-12 are in stand-by mode. Envisat is scheduled for launch in February 02, Aqua is scheduled for launch in April 02 and ADEOS-II is scheduled for launch in November 02.

Stage B3: July 83 - December 99 (16.5 years)

Stage TV: July 83 - December 99 (16.5 years)

Stage SI: July 83 - December 99 (16.5 years)

Stage D: July 83 - December 99 (16.5 years)

Satellite Network

B Level Data Products

* Delivery backlogs for B2 data (none).

* Delivery backlog for B3 data = 18 months (with respect to planned schedule). B3 data for 198 months have been archived.

* Delivery backlog for DX/D1/D2 data = 18 months (with respect to planned schedule). D1/D2 data for 198 months have been archived.