Looking Up or Looking Down? Hydrologic and Atmospheric Perspectives on Precipitation and Evaporation Variability

Research output: Contribution to journalComment/debate

Abstract

Precipitation and evapotranspiration, respectively, an input and an output for hydrologists and ocean scientists, but the opposite for meteorologists, quantify the intensity of vertical water exchange between land, ocean, and the atmosphere. The interesting paper by Dagan et al. (2019, https://doi.org/10.1029/2019GL084173) analyzed important constraints between such fluxes as a function of spatial scales. This commentary aims to provide a complementary, hydrologic point of view, emphasizing how their intermittency at different spatial and temporal scales is essentially related to the contrasting water storage capacities of the atmosphere and the Earth's surface. Alterations of such storage due to global warming and land cover change are a challenge for the geophysical community and beyond.

Original languageEnglish (US)
Pages (from-to)11968-11971
Number of pages4
JournalGeophysical Research Letters
Volume46
Issue number21
DOIs
StatePublished - Nov 16 2019

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Keywords

  • climate change
  • extreme events
  • fractal analysis
  • land use land cover change
  • land-atmosphere interaction
  • self-similarity

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