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SeaWiFS DeepBlue Level 3 Data Fields

SeaWiFS Deep Blue Version 3 (SWDB_V3) Data Parameter Description

Data Field Name
Description
Units
 
latitude  
 
latitude of the center of the grid element
 
degrees_north
longitude
longitude of the center of the grid element
degrees_east
land_bands
wavelength bands over land
nm
ocean_bands
wavelength bands over ocean
nm
solar_zenith_angle
angle between the pixel zenith and the sun
degrees
viewing_zenith_angle
angle between the cell zenith and the instrument
degrees
relative_azimuth_angle
difference between the satellite and solar azimuth angles
NOTE: Follows the Gordon convention and is measured relative to South.
degrees
scattering_angle
angle between the direction of incident radiation and the direction into which it is scattered
degrees
time_of_measurement
average time of measurement
seconds since 1993-01-01 00:00:00.0
aerosol_optical_thickness_550_land_ocean
aerosol optical thickness at 550nm over land and ocean
 
aerosol_optical_thickness_550_land
aerosol optical thickness at 550nm over land only
none
aerosol_optical_thickness_550_ocean
aerosol optical thickness at 550 nm over ocean and interior water bodies (lakes, rivers, etc)
none
aerosol_optical_thickness_550_count_land_ocean
number of cells used per grid element in average
count
aerosol_optical_thickness_550_count_land
number of cells used per grid element in average over land
count
aerosol_optical_thickness_550_count_ocean
number of cells used per grid element in average over ocean
count
aerosol_optical_thickness_550_stddev_land_ocean
standard deviation of aerosol optical thickness at 550 nm per grid element over land and ocean
none
aerosol_optical_thickness_550_stddev_land
standard deviation of aerosol optical thickness at 550 nm per grid element over land
none
aerosol_optical_thickness_550_stddev_ocean
standard deviation of aerosol optical thickness at 550 nm per grid element over ocean
none
aerosol_optical_thickness_land
aerosol optical thickness at 412 nm, 490 nm, and 670 nm over land only
none
aerosol_optical_thickness_ocean
aerosol optical thickness at 510 nm, 670 nm, and 865 nm over ocean only
none
aerosol_optical_thickness_count_land
number of cells used per grid element in average over land
count
aerosol_optical_thickness_count_ocean
number of cells used per grid element in average over ocean
count
aerosol_optical_thickness_stddev_land
standard deviation of aerosol optical thickness per grid element over land
none
aerosol_optical_thickness_stddev_ocean
standard deviation of aerosol optical thickness per grid element over ocean
none
angstrom_exponent_land_ocean
Ångström exponent of over land and ocean.
none
angstrom_exponent_land
Ångström exponent of aerosols calculated using the aerosol optical thickness at 412 nm and 490 nm over land.
none
angstrom_exponent_ocean
Ångström exponent of aerosols calculated using the aerosol optical thickness at 440 nm and 870 nm over ocean. See note below.
none
angstrom_exponent_stddev_land_ocean
standard deviation of Ångström exponent per grid element over land and ocean
none
angstrom_exponent_stddev_land
standard deviation of Ångström exponent per grid element over land
none
angstrom_exponent_stddev_ocean
standard deviation of Ångström exponent per grid element over ocean
 
angstrom_exponent_count_land_ocean
number of cells used per grid element in average over land and ocean
count
angstrom_exponent_count_land
number of cells used per grid element in average over land
count
angstrom_exponent_count_ocean
number of cells used per grid element in average over ocean
count
 
Note: Ångström  exponents over ocean are calculated using aerosol optical thickness at 440 nm and 870 nm
to match the data from AERONET.  These AOT values are derived in a physically consistent manner using the
retrieved aerosol properties.
 

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Last updated: Feb 24, 2012 03:54 PM ET
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