NOAA Office of Satellite and Product Operations

MODIS / Terra NASA L2gen NIR Ocean Color Products (Backup)

The MODIS/Terra ocean color products are our backup products since the sensor has serious calibration problems. The ocean color products are derived by using the NASA L2gen SeaDAS codes based on Near-Infrared (NIR) atmospheric correction algorithm. The products include chlorophyll concentration and remote sensing reflectance at 667 nm over Gulf of Mexico (GOM) and Hawaii (HI).

Chlorophyll concentration provides an estimate of the live phytoplankton biomass in the surface layer. It is also referred to as the amount of the green pigment chlorophyll. The chlorophyll anomaly is generated when today's chlorophyll concentration data is compared to the bi-monthly mean. A positive anomaly indicates new algal growth. Bi-monthly mean values are averages calculated over 61 days.

Daily Mean (w/Granules)  |  Anomaly  |  Bimonthly Mean

Chlorophyll Concentration (Chl-a): Bimonthly Mean
Region
Month A
Month B
Month C
Gulf of Mexico (GM) Albers Projection
PbiMonthModisTerraNirChlA Day 0
2014265
PbiMonthModisTerraNirChlA Day 1
2014235
PbiMonthModisTerraNirChlA Day 2
2014205
Gulf of Mexico (GM) Mercator Projection
PbiMonthModisTerraNirChlA Day 0
2014265
PbiMonthModisTerraNirChlA Day 1
2014235
PbiMonthModisTerraNirChlA Day 2
2014205
Hawaii (HI)
PbiMonthModisTerraNirChlA Day 0
2014265
PbiMonthModisTerraNirChlA Day 1
2014235
PbiMonthModisTerraNirChlA Day 2
2014205