ru cool direct broadcast acquisitions l-band (1.2 meter antenna)
DESCRIPTION
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 - PowerPoint PPT PresentationTRANSCRIPT
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RU COOL Direct Broadcast AcquisitionsL-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
ChinaChina FY1 MVISR
Product: 1km relative chlorophyll
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RU COOL Direct Broadcast AcquisitionsX-band (3.6 meter antenna)
United States
NASA Aqua and Terra MODIS
Product: 1km SST, chlorophyll, reflectance
absorption, backscatter
Europe
ESA Metop-A AVHRR
Products: 1km SST
India
IRSO Ocean Color Monitor
Products: 360m chlorophyll
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Sea Surface Temperatures
AVHRR Aqua MODIS
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Data ProcessingDe-clouding Sea Surface Temperatures
SST is examined on a per-pixel basis to determine if cloud contamination ispresent. A series of 3 tests are performed and a mask value is assignedto each pixel denoting the results.
Test 1: SST fails time test if > 2degC cooler than previous 72-hours meanTest 2: SST fails climatology if > 5degC colder than climatologyTest 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 test2: Pixel failed the climatology test4: Pixel failed combined testing
Suitable data is selected based on the desired mask value.
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Comparison of Raw andDe-clouded AVHRR Sea Surface Temperature
• OCM
Mask value applied: 0
Before de-clouding After de-clouding
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De-clouded AVHRR Sea Surface Temperature
3-day Rolling Average 3-day Temperature Variability
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De-clouded AVHRR Sea Surface Temperature
8-day Rolling Average 8-day Temperature Variability
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East Coast 7-day composite
1, 3, and 7-day AVHRR SST Composites for Google Earth
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FY1-D and MODIS Chlorophyll Products
FY1-D Chlorophyll Aqua MODIS Chlorophyll
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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
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Aqua MODIS Absorption
Phytoplankton Absorption at 443 Detritus Absorption at 443
Phytoplankton Absorption is produced at 443, Detritus at wavelengths 412 and 443
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Simplified L-band Process Flow
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Simplified X-band Process Flow