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New MODIS/Aqua Ocean Products

The standard product suite for MODIS/Aqua will not be changed for this reprocessing. However, several new products have been incorporated into the Multi-Sensor Level-1 to Level-2 (MSL12) processing code, and others have had major overhaul to generalize them for multiple sensor use. These non-standard products are made avaiable for community evaluation. The MSL12 code has also been substantially restructured to improve maintainability and portability. The new code and or updated product suite will be included in the next SeaDAS release. Major product updates or additions include:

Chlorophyll Fluorescence and Supporting Products

  • flh, fluorescence line height
  • cfe, chlorophyll fluorescence efficiency
  • Support for 678nm channel (e.g., nLw_678, tau_678, etc.)

    • Carder Semi-Analytical Bio-Optical Model

  • chl_carder, chlorophyll concentration
  • a_nnn_carder, total absorption at sensor wavelength nnn
  • bb_nnn_carder, total backscatter at sensor wavelength nnn
  • bbp_nnn_carder, particulate backscatter at sensor wavelength nnn
  • aph_nnn_carder, absorption due to phytoplankton at sensor wavelength nnn
  • adg_nnn_carder, absorption due to gelbstof and detrital material at sensor wavelength nnn
  • flags_carder, model flags

    • Flag NameBit PositionDescription
    CFLAG_FAIL0x0001failure (bad inputs)
    CFLAG_DEFAULT0x0002 using default (empirical) algorithm
    CFLAG_BLEND0x0004 blending with default algorithm
    CFLAG_UNPKG0x0010unpackaged case
    CFLAG_PKG0x0020packaged case
    CFLAG_HIPKG0x0040highly packaged case
    CFLAG_GLOBAL0x0080global case
    CFLAG_LO4120x0100low input 412 reflectance
    CFLAG_LO5550x0200low input 55x reflectance
    CFLAG_CHLINC0x0400large inconsistency with default

    Garver-Siegel-Maritorena-2001 Semi-Analytical Bio-Optical Model

  • chl_gsm01, chlorophyll concentration
  • a_nnn_gsm01, total absorption at sensor wavelength nnn
  • bb_nnn_gsm01, total backscatter at sensor wavelength nnn
  • bbp_nnn_gsm01, particulate backscatter at sensor wavelength nnn
  • aph_nnn_gsm01, absorption due to phytoplankton at sensor wavelength nnn
  • adg_nnn_gsm01, absorption due to gelbstof and detrital material at sensor wavelength nnn

    • Clark Empirical Algorithms

  • chl_clark, chlorophyll concentration
  • poc_clark, particulate organic carbon
  • tsm_clark, total suspended matter

    • Carder IPAR & ARP

  • ipar, instantaneous photosynthetically available radiation
  • arp, instantaneous absorbed radiation by phytoplankton

    • Gordon & Balch Calcite

  • calcite_2b, calcite concentration, 2-band algorithm
  • calcite_3b, calcite concentration, 3-band algorithm
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    Updated: 07 April 2005     		NASA logo