Interdependence of climate, soil, and vegetation as constrained by the Budyko curve

Pierre Gentine, Paolo D'Odorico, Benjamin R. Lintner, Gajan Sivandran, Guido Salvucci

Research output: Contribution to journalArticle

106 Citations (Scopus)

Abstract

The Budyko curve is an empirical relation among evapotranspiration, potential evapotranspiration and precipitation observed across a variety of landscapes and biomes around the world. Using data from more than three hundred catchments and a simple water balance model, the Budyko curve is inverted to explore the ecohydrological controls of the soil water balance. Comparing the results across catchments reveals that aboveground transpiration efficiency and belowground rooting structure have adapted to the dryness index and the phase lag between peak seasonal radiation and precipitation. The vertical and/or lateral extent of the rooting zone exhibits a maximum in semi-arid catchments or when peak radiation and precipitation are out of phase. This demonstrates plant strategies in Mediterranean climates in order to cope with water stress: the deeper rooting structure buffers the phase difference between precipitation and radiation. Results from this study can be used to constrain land-surface parameterizations in ungauged basins or general circulation models.

Original languageEnglish (US)
Article numberL19404
JournalGeophysical Research Letters
Volume39
Issue number19
DOIs
StatePublished - Oct 16 2012

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vegetation
rooting
climate
soils
catchment
water balance
evapotranspiration
water budget
curves
radiation
soil
potential evapotranspiration
biome
water stress
transpiration
general circulation model
land surface
parameterization
soil water
time lag

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Gentine, Pierre ; D'Odorico, Paolo ; Lintner, Benjamin R. ; Sivandran, Gajan ; Salvucci, Guido. / Interdependence of climate, soil, and vegetation as constrained by the Budyko curve. In: Geophysical Research Letters. 2012 ; Vol. 39, No. 19.
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Interdependence of climate, soil, and vegetation as constrained by the Budyko curve. / Gentine, Pierre; D'Odorico, Paolo; Lintner, Benjamin R.; Sivandran, Gajan; Salvucci, Guido.

In: Geophysical Research Letters, Vol. 39, No. 19, L19404, 16.10.2012.

Research output: Contribution to journalArticle

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