NDVI relationship to monthly evaporation

Jozsef Szilagyi, D. C. Rundquist, D. C. Gosselin, M. B. Parlange

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Abstract

Normalized difference vegetation indices (NDVI), calculated from Landsat-MSS images, were correlated with monthly total precipitation and estimates of monthly evaporation in a prairie environment. The highest value of the correlation coefficient (r=.80) was obtained between the monthly mean NDVI and estimated evaporation of the preceding month. The de-seasoned NDVI and evaporation values retained a correlation coefficient of.53 corresponding to half of the originally explained variance (r=.64) between NDVI and evaporation suggesting that NDVI indices may be useful for estimating regional-scale evaporation in a water-limited environment.

Original languageEnglish
Pages (from-to)1753-1756
Number of pages4
JournalGeophysical Research Letters
Volume25
Issue number10
DOIs
Publication statusPublished - 15 May 1998
Externally publishedYes

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