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Remote Sens. 2016, 8(7), 536; doi:10.3390/rs8070536

A Unified Algorithm for the Atmospheric Correction of Satellite Remote Sensing Data over Land and Ocean

1
State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 36 Bochubeilu, Hangzhou 310012, China
2
Collaborative Innovation Center for South China Sea, Nanjing University, Nanjing 210046, China
*
Author to whom correspondence should be addressed.
Academic Editors: Xiaofeng Li and Prasad S. Thenkabail
Received: 29 February 2016 / Revised: 5 June 2016 / Accepted: 17 June 2016 / Published: 24 June 2016
View Full-Text   |   Download PDF [2582 KB, uploaded 24 June 2016]   |  

Abstract

The atmospheric correction of satellite observations is crucial for both land and ocean remote sensing. However, the optimal approach for each area is different due to the large spectra difference in the ground reflectance between land and ocean. A unified atmospheric correction (UAC) approach based on a look-up table (LUT) of in situ measurements is developed to remove this difference. The LUT is used to select one spectrum as the in situ ground reflectance needed to obtain the initial aerosol reflectance, which in turn is used for determining the two closest aerosol models. The aerosol reflectance, obtained from these aerosol models, is then used to deduce the estimated ground reflectance. This UAC model is then used to process the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) data, and its performance is validated with a large number of in situ measurements. The mean bias of the land reflectance for this model is 6.59% with a root mean square error (RMSE) of 19.61%. The mean bias and RMSE of the water-leaving reflectance are 7.59% and 17.10% validated by the in situ measurements using the above-water method, while they are 13.60% and 22.53% using the in-water method. The UAC model provides a useful tool for correcting the satellite-received reflectance without separately having to deal with land and ocean pixels. Further, it can seamlessly expand the satellite ocean color data for terrestrial use and improve quantitative remote sensing over land. View Full-Text
Keywords: atmospheric correction; land remote sensing; ocean color remote sensing; aerosol remote sensing; reflectance atmospheric correction; land remote sensing; ocean color remote sensing; aerosol remote sensing; reflectance
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Mao, Z.; Pan, D.; He, X.; Chen, J.; Tao, B.; Chen, P.; Hao, Z.; Bai, Y.; Zhu, Q.; Huang, H. A Unified Algorithm for the Atmospheric Correction of Satellite Remote Sensing Data over Land and Ocean. Remote Sens. 2016, 8, 536.

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