Determination of aerosol optical depth and land surface directional reflectances using multiangle imagery

Spectral aerosol optical depths, surface hemispherical-directional reflectance factors, and bihemispherical reflectances (albedos) are retrieved for an area of Glacier National Park using spectral, multiangle imagery obtained with the airborne advanced solid state array spectroradiometer (ASAS). The retrieval algorithms are described and are identical in principle to those being devised for use by the multiangle imaging spectroradiometer (MISR) which will fly on the EOS-AM1 spacecraft in 1998. As part of its science mission, MISR will produce global coverage of both aerosol amounts and land surface reflection properties. The results in this paper represent the initial effort in applying the MISR algorithms to real data. These algorithms will undergo additional testing and validation as more multiangle data become available.

[1]  Darrel L. Williams,et al.  An off-nadir-pointing imaging spectroradiometer for terrestrial ecosystem studies , 1991, IEEE Trans. Geosci. Remote. Sens..

[2]  Jack Kornfield,et al.  A Comparative Study of the Effects of Albedo Change on Drought in Semi-Arid Regions. , 1977 .

[3]  R. Preisendorfer,et al.  Principal Component Analysis in Meteorology and Oceanography , 1988 .

[4]  Darrel L. Williams,et al.  Multispectral bidirectional reflectance of northern forest canopies with the advanced solid-state array spectroradiometer (ASAS)☆ , 1994 .

[5]  R. Dickinson.  Land Surface Processes and Climate—Surface Albedos and Energy Balance , 1983 .

[6]  V. V. Salomonson,et al.  Anisotropic Solar Reflectance over White Sand, Snow and Stratus Clouds. , 1968 .

[7]  David J. Diner,et al.  A multiangle imaging spectroradiometer for terrestrial remote sensing from the earth observing system , 1991, Int. J. Imaging Syst. Technol..

[8]  S. Warren,et al.  A Model for the Spectral Albedo of Snow. II: Snow Containing Atmospheric Aerosols , 1980 .

[9]  L. Radke,et al.  Background particle size distributions over North America , 1988 .

[10]  Eric P. Shettle,et al.  Atmospheric Aerosols: Global Climatology and Radiative Characteristics , 1991 .

[11]  G. E. Hunt,et al.  Solution of Radiative Transfer Problems Using the Invariant Sn Method , 1968 .

[12]  David J. Diner,et al.  Retrieval of aerosol optical properties from multi-angle satellite imagery , 1992, IEEE Trans. Geosci. Remote. Sens..

[13]  Ross Nelson,et al.  Directional Reflectance Distributions of a Hardwood and Pine Forest Canopy , 1986, IEEE Transactions on Geoscience and Remote Sensing.

[14]  E. Vermote,et al.  Operational remote sensing of tropospheric aerosol over land from EOS moderate resolution imaging spectroradiometer , 1997 .

[15]  J. Irons,et al.  Airborne bidirectional radiances of snow-covered surfaces in Montana, U.S.A. , 1993, Annals of Glaciology.

[16]  D. Kimes.  Dynamics of directional reflectance factor distributions for vegetation canopies. , 1983, Applied optics.