A COMPARISON OF THE NORMALIZED DIFFERENCE VEGETATION INDEX AND RAINFALL FOR THE AMAZON AND NORTHEASTERN BRAZIL

Authors
SANTOS P NEGRI AJ
Citation
P. Santos et Aj. Negri, A COMPARISON OF THE NORMALIZED DIFFERENCE VEGETATION INDEX AND RAINFALL FOR THE AMAZON AND NORTHEASTERN BRAZIL, Journal of applied meteorology, 36(7), 1997, pp. 958-965
Citations number
34
Categorie Soggetti
Metereology & Atmospheric Sciences
Journal title
Journal of applied meteorology → ACNP
ISSN journal
08948763
Volume
36
Issue
7
Year of publication
1997
Pages
958 - 965
Database
ISI
SICI code
0894-8763(1997)36:7<958:ACOTND>2.0.ZU;2-7
Abstract
This paper presents a comparison of the normalized difference vegetati on index (NDVI! and rainfall for the Amazon and northeastern Brazil fo r the time period of 1988-90. The analysis shows that the NDVI and rai nfall are uncorrelated in the Amazon, except in the northernmost part, where the rainfall regime is drier and a savanna type of vegetation i s present. In the drier region of northeastern Brazil, the relationshi p is exponential, with the NDVI showing sensitivity to rainfall within a regime of less than approximately 100 mm per month of rainfall.