OCEAN COLOUR AND MARINE AEROSOLS
OCEAN COLOUR AND MARINE AEROSOLS
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Directional parameters:
- V 14.14: initial version
- V 15.14: minor correction in the discrimination of out-of-range product values
- V 15.15: same as V 15.14 for this product
- V 15.16: same as V 15.15 for this product
- V 16.16: correction concerning light attenuation by water vapor
- V 17.17: new algorithm based on NDPI for the chlorophyll concentration
+ modification of a few constants in the processing
+ Reference Document Version Number updated
- V 19.17: same as v 17.17 for this product
- V 25.21: Updated absolute calibration coefficients (490 and 565 nm)
+ Improved screening of contaminated pixels (clouds, aerosols and glitter)
+ New Rayleigh scattering Look-Up Tables computed for a rough ocean surface (wind speed of 2 m/s)
+ Aerosol model infered from (670, 865) spectral variation instead of (670,765,865)
- V 29.23: Updated absolute calibration coefficients
+ use of 443P instead of 443 to compute the directional marine reflectance
+ maximum viewing zenith angle to perform atmospheric correction reduced from 62 to 50 degrees.
Marine parameters:
- V 14.14: initial version
- V 15.14: minor correction in the discrimination of out-of-range product values
- V 15.15: diffuse reflectance correction. Concerns mainly large view angles
- V 15.16: same as V 15.15 for this product
- V 16.16: correction concerning light attenuation by water vapor
- V 17.17: modification of a few constants in the processing + Reference Document Version Number updated
- V 19.17: slight improvement in the diffuse marine reflectance computation
+ pigment concentration computed using the NDPI algorithm
- V 25.21: Updated absolute calibration coefficients (490 and 565 nm)
+ Improved screening of contaminated pixels (clouds, aerosols and glitter)
+ New Rayleigh scattering Look-Up Tables computed for a rough ocean surface (wind speed of 2 m/s)
+ Aerosol model infered from (670,865) spectral variation instead of (670,765,865)
- V 29.23: Updated absolute calibration coefficients
+ use of 443P instead of 443 to compute the directional marine reflectance
+ maximum viewing zenith angle to perform atmospheric correction reduced from 62 to 50 degrees
+ use of a "SEAWIFS-like" bioptical algorithm (OC4.2 based on the 490/565 ratio) to compute the chlorophyll concentration.
Aerosols Parameters:
- V 14.14: initial version
- V 15.14: minor correction in the discrimination of out-of-range product values
- V 15.15: same as V 15.14 for this product
- V 15.16: correction for the determination of the best aerosol type (Seawifs models)
- V 16.16: correction concerning light attenuation by water vapor
+ correction for the determination of the best aerosol type (WMO models)
- V 17.17: new marine aerosols definition models
+ modification of a few constants in the processing
+ Reference Document Version Number updated
- V 19.17: same as v 17.17 for this product
- V 25.21: Less strict cloud removal criteria to enable high aerosol optical depth retrieval
+ New aerosol Look-Up Tables including higher optical depth (up to 1.2)
- V 29.23: Same as version 25.21 for this product.
LAND SURFACES AND AEROSOLS OVERLAND
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Directional parameters
- V 13.09: initial version
- V 14.10: same as version 13.09 concerning this product
- V 15.11: same as previous version concerning this product
- V 16.12: same as previous version concerning this product
- V 17.15: final version; modification of a few constants in the processing
+ Reference Document Version Number updated
Water vapor and aerosol not yet available
RADIATION BUDGET AND CLOUDS
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- V 14.09: initial version low confidence above snow / sea ice covered areas "corrected O2 cloud presure" questionnable
- V 15.09: minor correction in the discrimination of out-of-range product values
- V 16.10: minor correction of polarized radiances for very near nadir observations
+ minor correction concerning non calculated "corrected cloud pressure" in bidimensionnal distrinution products
- V 16.11: minor corrections of cloud detection parameters
- V 17.12: new cloud phase identification algorithm
- V 20.14: final version; New algorithm for cloud pressure
+ new thresholds in the computations of water vapor content and Rayleigh pressure
+ Reference Document Version Number updated
+ minor corrections of bidimensionnal distrinution products computation
+ minor corrections of Surface quality index
+ correction of minor anomaly in cloud phase algorithm
