EarthRef.org Reference Database (ERR)
Development and Maintenance by the EarthRef.org Database Team

Detailed Reference Information
Sakellariou & Leighton 1988
Sakellariou, N.K. and Leighton, H.G. (1988). Identification of cloud-free pixels in inhomogeneous surfaces from AVHRR radiances. Journal of Geophysical Research 93: doi: 10.1029/88JD01653. issn: 0148-0227.

A new method of distinguishing clear and cloud-contaminated pixels from AVHRR data is described. Whereas most previous methods have difficulty in identifying cloud-contaminated pixels when the background is inhomogenous, such as is the case for coastal regions in continental regions containing vegetated land and bare soil or land and water, the present method is particularly suited to these situations. Examination of the measured reflectivities in channels 1 and 2 of the AVHRR for these backgrounds and for clear skies suggests that the reflectivities are related linearly. The linear relationship is understandable in terms of pixels being comprised of linear combinations of two different surface types. Advantage is taken of this relationship as well as the radiance in channel 4 to identify cloud-free pixels for complex surface conditions. The technique is readily automated and combined with other techniques that may be more suitable for homogeneous backgrounds. ¿ American Geophysical Union 1988

BACKGROUND DATA FILES

Abstract

Keywords
Meteorology and Atmospheric Dynamics, Instruments and techniques
Journal
Journal of Geophysical Research
http://www.agu.org/journals/jb/
Publisher
American Geophysical Union
2000 Florida Avenue N.W.
Washington, D.C. 20009-1277
USA
1-202-462-6900
1-202-328-0566
service@agu.org
Click to clear formClick to return to previous pageClick to submit