Skip all navigation and jump to content Jump to site navigation
NASA Logo - Goddard Space Flight Center

+ NASA Homepage

    
Goddard Space Flight Center
About MODIS News Data Tools /images2 Science Team Science Team Science Team

   + Home
ABOUT MODIS
MODIS Publications Link
MODIS Presentations Link
MODIS Biographies Link
MODIS Science Team Meetings Link
 

 

 

Liu, CH (2007). Error propagation from aerosol retrieval to atmospheric correction due to adjacency effect for FORMOSAT-2 RSI band. TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES, 18(4), 827-841.

Abstract
Homogeneous surface is usually assumed in aerosol retrieval for the dark target method. Retrieved aerosol optical depth can thus be overestimated. This error will also be propagated into retrieved surface reflectance during atmospheric correction, especially for high spatial resolution of 8 m for FORMOSAT-2 (also known as ROCSAT-2) RSI. The error in retrieved surface reflectance during atmospheric corrections induced by retrieved aerosol optical depth error due to adjacency effect over a dark target is studied in the green and red bands of FORMOSAT-2 RSI. The results show that significant errors in retrieved surface reflectance, i.e., larger than 0.01, may occur in most cases except at low contrast for a bright target. Such an error for a dark target is larger than that for a bright target for given contrast and haziness. Relatively, the error of retrieved surface reflectance is enhanced by the introduced error of aerosol optical depth in atmospheric correction for dark targets. The error can be larger than 35% for dark targets and less than 10% for bright targets. Hence, it is suggested that adjacency effect be considered from aerosol optical depth retrieval to surface reflectance retrieval in atmospheric correction except at low contrast for bright targets.

DOI:
10.3319/TAO.2007.18.4.820(A)

ISSN:
1017-0839

FirstGov logo Privacy Policy and Important Notices NASA logo

Curator: Brandon Maccherone
NASA Official: Shannell Frazier

NASA Home Page Goddard Space Flight Center Home Page