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Proceedings Paper

Validation of the retrieved aerosol's optical parameters from POLDER data
Author(s): Yoshiyuki Kawata; Atsuo Mori; Yasuyuki Kimura
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Paper Abstract

Aerosols three optical parameters, namely, its optical thickness ta(500) at the wavelength of 500nm, Angstrom exponent a, and real part of refractive index Nr, were retrieved from ADEOS/POLDER data by analyzing the observed directional reflectance and polarization information. In this retrieval we applied the directional R-P(Reflectance-Polarization) algorithm to the POLDERs 865nm band data. This retrieval algorithm was proposed previously in our paper and we extend it in this study. The validation on the retrieved results was made by comparing with the sky observation data. We found that the correlation coefficient between the retrieved and measured values was good (R=0.86) in the aerosol optical thickness, whereas it is poor(R=0.32) in Angstrom exponent. In addition, we presented the monthly averaged distribution maps of aerosol's three optical parameters over the oceans from the Indian Ocean to the western Pacific Ocean during April 1-31, 1997. This study indicated that there are extended aerosol regions with large values of real part of refractive index (Nr>1.5) in April in the tropical zone.

Paper Details

Date Published: 9 April 2003
PDF: 10 pages
Proc. SPIE 4891, Optical Remote Sensing of the Atmosphere and Clouds III, (9 April 2003); doi: 10.1117/12.466353
Show Author Affiliations
Yoshiyuki Kawata, Kanazawa Institute of Technology (Japan)
Atsuo Mori, Kanazawa Institute of Technology (Japan)
Yasuyuki Kimura, Kanazawa Institute of Technology (Japan)

Published in SPIE Proceedings Vol. 4891:
Optical Remote Sensing of the Atmosphere and Clouds III
Hung-Lung Huang; Daren Lu; Yasuhiro Sasano, Editor(s)

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