Level3 Collection 005 Updates New Web Site Content

Level-3 Collection 005 Updates & New Web Site Content Paul A. Hubanks Science Systems and Applications, Inc.

Topic 1. L 3 Updates for Collection 005

a. Scientific Data Set (SDS) Changes

Daily Global (08_D 3) statistics derived from Aerosol (04_L 2) • Combined Land & Ocean • Land only Collection 005 Updates L 2 Aerosol algorithm improvements: - reduced snow contamination in land retrievals at the snow/ice edge

Daily Global (08_D 3) statistics derived from Aerosol (04_L 2) • Ocean only Collection 005 Updates

Daily Global (08_D 3) statistics derived from Water Vapor (05_L 2) & Cloud (06_L 2) • Cirrus detection • Cloud Top properties Collection 005 Updates

Daily Global (08_D 3) statistics derived from Cloud (06_L 2) • Cloud Optical Properties (primary retrieval) Collection 005 Updates

Daily Global (08_D 3) statistics derived from Cloud (06_L 2) • Cloud Optical Properties (supplementary parameters) Collection 005 Updates

Daily Global (08_D 3) statistics derived from Atm. Profile (07_L 2) Collection 005 Updates

b. An Example Software Patch: L 3 sub-sampling and dead detector issue

L 3 Sub-sampling Product Family L 2 Data Resolution L 2 Geolocation Resolution L 2 Input Pixels (Max) per 1° L 3 Grid (Equator) Impact Aerosol 04 10 km 10 km 121 out of 121 No Water Vapor 05 1 km 5 km 484 out of 12, 231 Yes Cirrus Detection 06_CD 1 km 5 km 484 out of 12, 231 Yes Cloud Top Properties 06_CT 5 km 484 out of 484 No Cloud Optical Properties 06_OD 1 km 5 km 484 out of 12, 321 Yes Atmosphere Profile 07 5 km 484 out of 484 No

Using the old L 3 Logic, when sub-sampling … dead Aqua detectors for 1 km aggregated Band 6 Detector 1 2 3 4 5 6 7 8 9 10 « Dead detector caused all-fill L 3 parameters (that used band 6 as input) Code patch now allows a PCF specified start line for sub sampling – changed from “ 3” to “ 4” for C 005. (note that start pixel remains at “ 3” and stride remains at “ 5”)