Complementary-relationship-based 30 year normals (1981-2010) of monthly latent heat fluxes across the contiguous United States

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Abstract

Thirty year normal (1981-2010) monthly latent heat fluxes (ET) over the conterminous United States were estimated by a modified Advection-Aridity model from North American Regional Reanalysis (NARR) radiation and wind as well as Parameter-Elevation Regressions on Independent Slopes Model (PRISM) air and dew-point temperature data. Mean annual ET values were calibrated with PRISM precipitation (P) and validated against United States Geological Survey runoff (Q) data. At the six-digit Hydrologic Unit Code level (sample size of 334) the estimated 30 year normal runoff (P - ET) had a bias of 18 mm yr-1, a root-mean-square error of 96 mm yr-1, and a linear correlation coefficient value of 0.95, making the estimates on par with the latest Land Surface Model results but without the need for soil and vegetation information or any soil moisture budgeting.

Original languageEnglish
Pages (from-to)9367-9377
Number of pages11
JournalWater Resources Research
Volume51
Issue number11
DOIs
Publication statusPublished - Nov 2015

Keywords

  • 30 year normals
  • complementary relationship
  • evaporation

ASJC Scopus subject areas

  • Water Science and Technology

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