Detection of marine aerosols with IRS P4-Ocean Colour Monitor |
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| Authors: | Indrani Das M Mohan K Krishnamoorthy |
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| Institution: | (1) Marine Science and Coastal Environment Division, Space Applications Centre (ISRO), 380 015 Ahmedabad, India;(2) Space Physics Laboratory, Vikram Sarabhai Space Centre (ISRO), 695 022 Trivandrum, India |
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| Abstract: | The atmospheric correction bands 7 and 8 (765nm and 865nm respectively) of the Indian Remote Sensing Satellite IRS P4-0CM
(Ocean Colour Monitor) can be used for deriving aerosol optical depth (AOD) over the oceans. A retrieval algorithm has been
developed which computes the AOD using band 7 data by treating the ocean surface as a dark background after removing the Rayleigh
path radiance in the sensor-detected radiances. This algorithm has been used to detect marine aerosol distributions at different
coastal and offshore locations around India.
A comparison between OCM derived AOD and the NOAA operational AOD shows a correlation ∼0.92 while that between OCM derived
AOD and the ground-based sun photometer measurements near the coast of Trivandrum shows a correlation of ∼0.90. |
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| Keywords: | IRS P4-OCM Ocean Colour Monitor aerosol optical depth marine aerosols aerosol plumes |
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