NOAA Office of Satellite and Product Operations

MODIS / Aqua NIR-SWIR Ocean Color Products

The MODIS/Aqua NIR-SWIR ocean color products are derived by using the shortwave infrared (SWIR)-based atmospheric correction algorithm developed by the NOAA/NESDIS Center for Satellite Applications and Research (STAR). The products include chlorophyll concentration, remote sensing reflectance at 667 nm, water attenuation coefficient at 490 nm over 12 CoastWatch Regions-of-Interest, i.e., Northeast (NE), Southeast (SE), Gulf of Mexico (GOM), Caribbean (CB), West Coast (WC), Alaska (AK), East Tropical Pacific (EP), Equatorial Atlantic (EA), Great Lakes (GL), Hawaii (HI), North Atlantic (NA), and Pacific Basin (PB).

Water attenuation coefficient (Kd490) defines the presence of light (downwelling irradiance) versus depth, the depth of euphotic zone, and ultimately the maximum depth of primary production.

Water Attenuation Coefficient at 490 nm: Daily Mean
Region
08/18/2017
08/17/2017
08/16/2017
Northeast (NE)
Granules
PdailyMean_ModisAquaSwirNirKd490 Day 0
2017230
PdailyMean_ModisAquaSwirNirKd490 Day 1
2017229
PdailyMean_ModisAquaSwirNirKd490 Day 2
2017228
Southeast (SE)
Granules
PdailyMean_ModisAquaSwirNirKd490 Day 0
2017230
PdailyMean_ModisAquaSwirNirKd490 Day 1
2017229
PdailyMean_ModisAquaSwirNirKd490 Day 2
2017228
Gulf of Mexico (GM) Albers Projection
Granules
PdailyMean_ModisAquaSwirNirKd490 Day 0
2017230
PdailyMean_ModisAquaSwirNirKd490 Day 1
2017229
PdailyMean_ModisAquaSwirNirKd490 Day 2
2017228
Gulf of Mexico (GM) Mercator Projection
Granules
PdailyMean_ModisAquaSwirNirKd490 Day 0
2017230
PdailyMean_ModisAquaSwirNirKd490 Day 1
2017229
PdailyMean_ModisAquaSwirNirKd490 Day 2
2017228
Carribbean (CB)
Granules
PdailyMean_ModisAquaSwirNirKd490 Day 0
2017230
PdailyMean_ModisAquaSwirNirKd490 Day 1
2017229
PdailyMean_ModisAquaSwirNirKd490 Day 2
2017228
West Coast (WC)
Granules
PdailyMean_ModisAquaSwirNirKd490 Day 0
2017230
PdailyMean_ModisAquaSwirNirKd490 Day 1
2017229
PdailyMean_ModisAquaSwirNirKd490 Day 2
2017228
Alaska (AK)
Granules
PdailyMean_ModisAquaSwirNirKd490 Day 0
2017230
PdailyMean_ModisAquaSwirNirKd490 Day 1
2017229
PdailyMean_ModisAquaSwirNirKd490 Day 2
2017228
East Tropical Pacific (EP)
Granules
PdailyMean_ModisAquaSwirNirKd490 Day 0
2017230
PdailyMean_ModisAquaSwirNirKd490 Day 1
2017229
PdailyMean_ModisAquaSwirNirKd490 Day 2
2017228
Equatorial Atlantic (EA)
Granules
PdailyMean_ModisAquaSwirNirKd490 Day 0
2017230
PdailyMean_ModisAquaSwirNirKd490 Day 1
2017229
PdailyMean_ModisAquaSwirNirKd490 Day 2
2017228
Great Lakes (GL)
Granules
PdailyMean_ModisAquaSwirNirKd490 Day 0
2017230
PdailyMean_ModisAquaSwirNirKd490 Day 1
2017229
PdailyMean_ModisAquaSwirNirKd490 Day 2
2017228
Hawaii (HI)
Granules
PdailyMean_ModisAquaSwirNirKd490 Day 0
2017230
PdailyMean_ModisAquaSwirNirKd490 Day 1
2017229
PdailyMean_ModisAquaSwirNirKd490 Day 2
2017228
North Atlantic (NA)
Granules
PdailyMean_ModisAquaSwirNirKd490 Day 0
2017230
PdailyMean_ModisAquaSwirNirKd490 Day 1
2017229
PdailyMean_ModisAquaSwirNirKd490 Day 2
2017228
Pacific Basin (PB)
Granules
PdailyMean_ModisAquaSwirNirKd490 Day 0
2017230
PdailyMean_ModisAquaSwirNirKd490 Day 1
2017229
PdailyMean_ModisAquaSwirNirKd490 Day 2
2017228
Chesapeake Bay (CY)
Granules
PdailyMean_ModisAquaSwirNirKd490 Day 0
2017230
PdailyMean_ModisAquaSwirNirKd490 Day 1
2017229
PdailyMean_ModisAquaSwirNirKd490 Day 2
2017228