El Niño-La Niña cycle and recent trends in continental evaporation

Diego G. Miralles, Martinus J. Van Den Berg, John H. Gash, Robert M. Parinussa, Richard A.M. De Jeu, Hylke E. Beck, Thomas R.H. Holmes, Carlos Jiménez, Niko E.C. Verhoest, Wouter A. Dorigo, Adriaan J. Teuling, A. Johannes Dolman

Research output: Contribution to journalArticlepeer-review

275 Scopus citations

Abstract

The hydrological cycle is expected to intensify in response to global warming. Yet, little unequivocal evidence of such an acceleration has been found on a global scale. This holds in particular for terrestrial evaporation, the crucial return flow of water from land to atmosphere. Here we use satellite observations to reveal that continental evaporation has increased in northern latitudes, at rates consistent with expectations derived from temperature trends. However, at the global scale, the dynamics of the El Niño/Southern Oscillation (ENSO) have dominated the multi-decadal variability. During El Niño, limitations in terrestrial moisture supply result in vegetation water stress and reduced evaporation in eastern and central Australia, southern Africa and eastern South America. The opposite situation occurs during La Niña. Our results suggest that recent multi-year declines in global average continental evaporation reflect transitions to El Niño conditions, and are not the consequence of a persistent reorganization of the terrestrial water cycle. Future changes in continental evaporation will be determined by the response of ENSO to changes in global radiative forcing, which still remains highly uncertain. © 2014 Macmillan Publishers Limited.
Original languageEnglish (US)
Pages (from-to)122-126
Number of pages5
JournalNature Climate Change
Volume4
Issue number2
DOIs
StatePublished - Feb 1 2014
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-02-14

ASJC Scopus subject areas

  • Environmental Science (miscellaneous)
  • Social Sciences (miscellaneous)

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