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Atmospheric and spectral corrections for estimating surface albedo from satellite data

M. ZORAN1,* , S. STEFAN2

Affiliation

  1. National Institute of R&D for Optoelectronics, Remote Sensing Department, Bucharest, MG-5, Romania
  2. University of Bucharest, Faculty of Physics, Bucharest-Magurele, MG-11 Romania

Abstract

Land surface broadband albedo is one of the most important physical parameters for climate models, because it governs the exchange of radiation between the land surface and the atmosphere. It depends on the atmospheric conditions through downward fluxes. Satellite remote sensing techniques provide a more accurate pixel-level estimation of surface albedo than traditional field measurements. However, atmospheric effects and band pass limits of satellite sensors are two factors that limit accurate estimation of surface albedo from satelite data. This paper develops a method for making atmospheric and spectral corrections for estimating surface albedo from satelite data. We applied an approach that decouples surface reflectance spectra from radiative transfer simulations so that many different surface reflectance spectra and the atmospheric conditions can be effectively incorporated for calculating the total shortwave albedo, total-, direct-, and diffuse visible, and near-infrared broadband albedos for several satelite data LANDSAT TM and ETM..

Keywords

Albedo, Climate model, Satellite remote sensing, Surface reflecting spectra.

Submitted at: Oct. 14, 2005
Accepted at: Jan. 26, 2006

Citation

M. ZORAN, S. STEFAN, Atmospheric and spectral corrections for estimating surface albedo from satellite data, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 1, pp. 247-251 (2006)