https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 24.9 2026-09-30T10:52:06.201Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/sciencekeywords/3678d18c-9dca-4743-abc0-1442b4d438d2 DROUGHT Drought should be considered relative to some long-term average condition ofbalance between precipitation and evapotranspiration (ET) in a particular area,a condition often perceived as 'normal.' Common to all types of drought is the fact that they originate from a deficiency of precipitation that results inwater shortage for some activity or for some group. It is also commonlyrecognized that other meteorological elements, such as temperature, wind, and relative humidity, may aggravate the severity and impacts of drought in someinstances. <BR><BR> A Drought Advisory may report on drought occurring in a particular region.