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Cloud Microphysical Characterization during AVIRIS-NG Campaign


Affiliations
1 Atmospheric Sciences Division, Atmosphere and Oceanic Sciences Group, Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India
2 Department of Physics, Electronics and Space Sciences, Gujarat University, Navrangpura, Ahmedabad 380 009, India
 

Airborne Visible/Infrared Imaging Spectrometer-Next Generation (AVIRIS-NG) air campaign has provided a unique opportunity to characterize the properties of tropical clouds at microscale. A novel approach based on spectral matching technique has been used to derive the cloud microphysical parameters (CMPs) such as optical thickness and effective radius over campaign sites of Kurnool (Andhra Pradesh) and Chilika (Odisha) region in India. It is found that the derived CMPs correspond to medium opacity and effective radius ranging from 4 to 18 μm. The hyperspectral bands coupled with high spatial resolution of the observations make it possible to identify pockets populated densely with large particles within a cloud. This has great applications for picking up fast developing convective cloud cells. More insight with different cloud type observations is anticipated with AVIRISN G phase-2 campaign.

Keywords

Cloud Microphysical Parameters, Hyperspectral Imaging, Remote Sensing, Spectral Matching.
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  • Cloud Microphysical Characterization during AVIRIS-NG Campaign

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Authors

Bipasha Paul Shukla
Atmospheric Sciences Division, Atmosphere and Oceanic Sciences Group, Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India
Jinya John
Department of Physics, Electronics and Space Sciences, Gujarat University, Navrangpura, Ahmedabad 380 009, India
Sambit Kumar Panda
Atmospheric Sciences Division, Atmosphere and Oceanic Sciences Group, Space Applications Centre, Indian Space Research Organisation, Ahmedabad 380 015, India

Abstract


Airborne Visible/Infrared Imaging Spectrometer-Next Generation (AVIRIS-NG) air campaign has provided a unique opportunity to characterize the properties of tropical clouds at microscale. A novel approach based on spectral matching technique has been used to derive the cloud microphysical parameters (CMPs) such as optical thickness and effective radius over campaign sites of Kurnool (Andhra Pradesh) and Chilika (Odisha) region in India. It is found that the derived CMPs correspond to medium opacity and effective radius ranging from 4 to 18 μm. The hyperspectral bands coupled with high spatial resolution of the observations make it possible to identify pockets populated densely with large particles within a cloud. This has great applications for picking up fast developing convective cloud cells. More insight with different cloud type observations is anticipated with AVIRISN G phase-2 campaign.

Keywords


Cloud Microphysical Parameters, Hyperspectral Imaging, Remote Sensing, Spectral Matching.

References





DOI: https://doi.org/10.18520/cs%2Fv116%2Fi7%2F1196-1200