An Investigation of Surface Albedo Variations during the Recent Sahel Drought

Autor:	Barry B. Hinton, C. C. Norton, F. R. Mosher
Rok vydání:	1979
Předmět:	Desertification Radiation measurement media_common.quotation_subject Environmental science Magnitude (mathematics) Satellite Precipitation Albedo Atmospheric sciences Reflectivity Zenith media_common
Zdroj:	Journal of Applied Meteorology. 18:1252-1262
ISSN:	0021-8952
DOI:	10.1175/1520-0450(1979)018<1252:aiosav>2.0.co;2
Popis:	Applications Technology Satellite 3 green sensor data were used to measure surface reflectance variations in the Sahara/Sahel during the recent drought period; 1967 to 1974. The magnitude of the seasonal reflectance change is shown to be as much as 80% for years of normal precipitation and less than 50% for drought years. Year to year comparisons during both wet and dry seasons reveal the existence of a surface reflectance cycle coincident with the drought intensity. The relationship between the green reflectance and solar albedo is examined and estimated to be about 0.6 times the reflectance change observed by the green channel.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8e60ab93b9e21489816f86a0d9a9f89b https://doi.org/10.1175/1520-0450(1979)018<1252:aiosav>2.0.co Zobrazit plný text záznamu