On the variability of the bare soil albedo different solar zenith angles and aerosol optical depths

A. J. Chen, G. R. Liu, C. H. Liu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Due to the angular anisotropy of the reflection properties of natural surfaces, bidirectional reflectance factor (BRF) and hemispherical reflectance (albedo) are dependent of solar zenith angle as well as the distribution of hemispheric irradiation. By using the results of Pinty et al (1989) to describe BRF's of bare soil in NOAA7/8 satellite AVHRR band 1 and 2, and the results of LOWTRAN 7 as the description of hemispherical irradiation, the variation of albedo and errors inferring from all viewing directions of BRF under changing solar zenith angles and aerosol optical depths is discussed in this paper. This paper also shows that the optimal view angle of bare soil used to infer the albedo from a single observation under solar zenith angle from 25° to 45°, and atmospheric conditions from clear sky to hazy sky for both AVHRR bands is about 50° off-nadir and about 80° relative azimuthal angle. Furthermore, their errors are no more than 1%.

Original languageEnglish
Title of host publicationInternational Geoscience and Remote Sensing Symposium (IGARSS)
EditorsSadao Fujimura
PublisherPubl by IEEE
Pages1294-1296
Number of pages3
ISBN (Print)0780312406
StatePublished - 1993
EventProceedings of the 13th Annual International Geoscience and Remote Sensing Symposium - Tokyo, Jpn
Duration: 18 Aug 199321 Aug 1993

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)
Volume3

Conference

ConferenceProceedings of the 13th Annual International Geoscience and Remote Sensing Symposium
CityTokyo, Jpn
Period18/08/9321/08/93

Fingerprint

Dive into the research topics of 'On the variability of the bare soil albedo different solar zenith angles and aerosol optical depths'. Together they form a unique fingerprint.

Cite this