Modified advection-aridity model of evapotranspiration

J. Szilagyi, Michael T. Hobbins, J. Józsa

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The original and modified versions of the advection-aridity (AA) model of regional evapotranspiration are tested with data from the Solar and Meteorological Surface Observation Network (SAMSON). The resulting long-term mean annual evapotranspiration estimates are validated against water balances of 25 watersheds that are minimally affected by human activity and contain at least one SAMSON station, as well as with similar closures of SAMSON-station/gridded precipitation and runoff. In general, model performance is very similar among the two versions, explaining at least 80% of the spatial variance in the long-term means, simultaneously remaining well within 10% of the water balance-based values in their station-averaged long-term mean annual evapotranspiration estimates. The modified AA model, however, can be used in humid as well as in arid regions with the same set of calibrated parameters, whereas the original AA model may require a recalibration.

Original languageEnglish
Pages (from-to)569-574
Number of pages6
JournalJournal of Hydrologic Engineering
Volume14
Issue number6
DOIs
Publication statusPublished - 2009

Fingerprint

Evapotranspiration
Advection
aridity
evapotranspiration
advection
water budget
Arid regions
Water
Watersheds
Runoff
arid region
human activity
watershed
runoff
station

Keywords

  • Evaporation
  • Evapotranspiration
  • Surface water
  • Water balance

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Water Science and Technology
  • Civil and Structural Engineering

Cite this

Modified advection-aridity model of evapotranspiration. / Szilagyi, J.; Hobbins, Michael T.; Józsa, J.

In: Journal of Hydrologic Engineering, Vol. 14, No. 6, 2009, p. 569-574.

Research output: Contribution to journalArticle

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