Title :
Estimation of pixel-based visible/SWIR band ratio for high resolution aerosol retrieval from MODIS imagery
Author :
Liu, Ronggao ; Liu, Yang
Author_Institution :
Inst. of Geographic Sci. & Natural Resources Res., Chinese Acad. of Sci., Beijing, China
Abstract :
The visible/SWIR band ratio is important for aerosol retrieval. In this presentation, a pixel-based ratio is estimated for MODIS data. It is assumed that the ratio is constant in a pixel in same season in ten years. The 2000-2009 MODIS data are used to infer the pixel for each two months. All clear pixels are selected and then the Rayleigh effects are corrected. The most 5%clearest pixels are used to calculate the ratio for each pixel. The spatial and temporal distribution of ratio is shown. And these pixel-based ratio are used to estimated the aerosol. The results indicated this land reflectances ratio is suitable for aerosol retrieval.
Keywords :
Rayleigh scattering; aerosols; atmospheric techniques; image resolution; image retrieval; infrared imaging; radiometers; MODIS imagery data; Rayleigh effects; aerosol retrieval; pixel based ratio; spatial distribution; temporal distribution; visible-SWIR band ratio; Aerosols; Land surface; MODIS; Pixel; Reflectivity; Satellites; Sea surface; Aerosol; Land surface reflectance; MODIS;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2010 IEEE International
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-9565-8
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2010.5649020
