RU COOL Direct Broadcast Acquisitions L-band (1.2 meter antenna) United States NOAA POES AVHRR Product: 1km sea surface temperatures (SST), de-clouded.

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Presentation transcript:

RU COOL Direct Broadcast Acquisitions L-band (1.2 meter antenna) United States NOAA POES AVHRR Product: 1km sea surface temperatures (SST), de-clouded SST NASA SeaWiFs (past) Product: 1km chlorophyll, reflectance backscatter, absorption China China FY1 MVISR Product: 1km relative chlorophyll

RU COOL Direct Broadcast Acquisitions X-band (3.6 meter antenna) United States NASA Aqua and Terra MODIS Product: 1km SST, chlorophyll, reflectance absorption, backscatter Europe ESA Metop-A AVHRR P roducts: 1km SST India IRSO Ocean Color Monitor Products: 360m chlorophyll

Sea Surface Temperatures AVHRRAqua MODIS

Data Processing De-clouding Sea Surface Temperatures SST is examined on a per-pixel basis to determine if cloud contamination is present. A series of 3 tests are performed and a mask value is assigned to each pixel denoting the results. Test 1: SST fails time test if > 2degC cooler than previous 72-hours mean Test 2: SST fails climatology if > 5degC colder than climatology Test 3: SST is sequentially run through time and climatology tests; neighboring pixels within 3km will also fail if test is not passed Mask Values (can be additive): 0: Most rigorous, pixel passes all tests 1: Pixel failed the time test 2: Pixel failed the climatology test 4: Pixel failed combined testing Suitable data is selected based on the desired mask value.

Comparison of Raw and De-clouded AVHRR Sea Surface Temperature OCM Mask value applied: 0 Before de-cloudingAfter de-clouding

De-clouded AVHRR Sea Surface Temperature 3-day Rolling Average 3-day Temperature Variability

De-clouded AVHRR Sea Surface Temperature 8-day Rolling Average 8-day Temperature Variability

East Coast 7-day composite 1, 3, and 7-day AVHRR SST Composites for Google Earth

FY1-D and MODIS Chlorophyll Products FY1-D Chlorophyll Aqua MODIS Chlorophyll

Aqua MODIS Absorption and Backscatter Absorption and backscatter is produced at five wavelengths: 412, 443, 488, 531 and 551. Absorption at 488 Backscatter at 488

Aqua MODIS Absorption Phytoplankton Absorption at 443Detritus Absorption at 443 Phytoplankton Absorption is produced at 443, Detritus at wavelengths 412 and 443

Simplified L-band Process Flow

Simplified X-band Process Flow