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Soil moisture from temperature measurements at the Earth's surface, updateSoil moisture budgets at the Earth's surface were investigated based on soil and atmospheric temperature variations. A number of data sets were plotted and statistically analyzed in order to accentuate the existence and the characteristics of mesoscale soil temperature extrema variations and their relations to other parameters. The correlations between diurnal temperature extrema for air and soil in drought and non-drought periods appear to follow different characteristic patterns, allowing an inference of soil moisture content from temperature data. The recovery of temperature extrema after a precipitation event also follows a characteristic power curve rise between two limiting values which is an indicator of evaporation rates. If these indicators are applied universally to regional temperature data, soil moisture content or drought conditions can be inferred directly from temperature measurements.
Document ID
19840022405
Acquisition Source
Legacy CDMS
Document Type
Preprint (Draft being sent to journal)
Authors
Welker, J. E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 12, 2013
Publication Date
June 1, 1984
Publication Information
Publication: Res. Activities of the Geodyn. Branch
Subject Category
Earth Resources And Remote Sensing
Accession Number
84N30474
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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