NUMBER 225 DATE: 04/05/02

Sector Processing Center (SPC):

During February, EUM, JMA, CSU, MSC and NOA processed more than 91% of A data into B1/B2 data.

Normal operations for February were reported by EUM, JMA, CSU, MSC and NOA. NOA reported on activities for both January and February

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 February 02 from NOAA-16 (AVHRR and HIRS), METEOSAT-5, METEOSAT-7, GMS-5, GOES-8 and GOES-10. BC data for December 01 for METEOSAT-5, METEOSAT-7, GMS-5, GOES-8 and GOES-10 were shipped to the GPC. Processing of the normalization for the "water vapor" channels is delayed to accommodate changes between NOAA-14 and NOAA-16 HIRS data.

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. All data (except DX) from the GPC are delivered by ftp to NOAA/NCDC and to NASA Langley.

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 September 01. Final B3 data have been produced through September 01.

Deliveries of B2 data from GOES-10 are current. Production of GOES-10 (preliminary) B3 data is complete through September 01. 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. Final B3 data have been produced through March 01.

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 September 01.

Deliveries of B2 data from GMS-5 are current. Production of GMS-5 (preliminary) B3 data is complete through September 01. Final B3 data have been produced through December 99.

TOVS correlative data processing is complete through May 01; further processing awaits receipt of more data.

Production of the ice/snow correlative dataset is complete through September 01; further processing awaits receipt of more data.

DX/D1/D2 data processing is complete through December 99. A complete investigation is underway to identify and fix (if possible) all small processing errors to improve the homogeneity of the whole D dataset for monitoring of climate variations. The GPC has been funded to begin processing of sampled MODIS data as a preliminary to making comparisons between ISCCP and MODIS cloud products.

All data products are currently delivered by ftp to the ICA and NASA Langley (except for DX data). The GPC is now beginning to copy its entire data holdings to new, much denser tape media.

Two CDs of D2 data are now available from NASA Langley, covering 83-88 and 89-93. A new CD covering 94-98 will be released within the next month or two.

The survey of midlatitude cyclones that merges re-analysis and ISCCP cloud data has been completed covering the period from 1983 through 1998. A survey of deep convection, including statistics of cloud properties and their evolution over system lifetimes has begun. These data will be merged with TRMM precipitation observations.

The entire D2 dataset is now available on the ISCCP Web site. Browse 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 was successfully launched on 28 February 02, Aqua is scheduled for launch in April 02 and ADEOS-II is scheduled for launch in November 02. India is planning to start a new series of geostationary weather satellites late this year with the launch of the first METSAT.

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

Stage TV: July 83 - December 00 (17.5 years)

Stage SI: July 83 - December 00 (17.5 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 = 20 months (with respect to planned schedule). B3 data for 198 months have been archived.

* Delivery backlog for DX/D1/D2 data = 20 months (with respect to planned schedule). D1/D2 data for 198 months have been archived.