The Vegetation Drought Response Index (VegDRI): A new integrated approach for monitoring drought stress in vegetation

Jesslyn F. Brown, Brian D. Wardlow, Tsegaye Tadesse, Michael J. Hayes, Bradley C. Reed

Research output: Contribution to journalArticlepeer-review

386 Scopus citations

Abstract

The development of new tools that provide timely, detailed-spatial-resolution drought information is essential for improving drought preparedness and response. This paper presents a new method for monitoring drought-induced vegetation stress called the Vegetation Drought Response Index (VegDRI). VegDRI integrates traditional climate-based drought indicators and satellite-derived vegetation index metrics with other biophysical information to produce a I km map of drought conditions that can be produced in near-real time. The initial VegDRI map results for a 2002 case study conducted across seven states in the north-central United States illustrates the utility of VegDRI for improved large-area drought monitoring.

Original languageEnglish (US)
Pages (from-to)16-46
Number of pages31
JournalGIScience and Remote Sensing
Volume45
Issue number1
DOIs
StatePublished - Jan 2008

ASJC Scopus subject areas

  • General Earth and Planetary Sciences

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