Precipitation scaling with temperature in warm and cold climates: An analysis of CMIP5 simulations

Guangqi Li,S. Harrison,Patrick J. Bartlein,K. Izumi,I. Colin Prentice

Published 2013 in Geophysical Research Letters

ABSTRACT

We investigate the scaling between precipitation and temperature changes in warm and cold climates using six models that have simulated the response to both increased CO2 and Last Glacial Maximum (LGM) boundary conditions. Globally, precipitation increases in warm climates and decreases in cold climates by between 1.5%/°C and 3%/°C. Precipitation sensitivity to temperature changes is lower over the land than over the ocean and lower over the tropical land than over the extratropical land, reflecting the constraint of water availability. The wet tropics get wetter in warm climates and drier in cold climates, but the changes in dry areas differ among models. Seasonal changes of tropical precipitation in a warmer world also reflect this “rich get richer” syndrome. Precipitation seasonality is decreased in the cold‐climate state. The simulated changes in precipitation per degree temperature change are comparable to the observed changes in both the historical period and the LGM.

PUBLICATION RECORD

  • Publication year

    2013

  • Venue

    Geophysical Research Letters

  • Publication date

    2013-08-16

  • Fields of study

    Environmental Science

  • Identifiers
  • External record

    Open on Semantic Scholar

  • Source metadata

    Semantic Scholar

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