reference : Identifying external influences on global precipitation

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Bibliographic fields
reftype Journal Article
Abstract Changes in global (ocean and land) precipitation are among the most important and least well-understood consequences of climate change. Increasing greenhouse gas concentrations are thought to affect the zonal-mean distribution of precipitation through two basic mechanisms. First, increasing temperatures will lead to an intensification of the hydrological cycle (“thermodynamic” changes). Second, changes in atmospheric circulation patterns will lead to poleward displacement of the storm tracks and subtropical dry zones and to a widening of the tropical belt (“dynamic” changes). We demonstrate that both these changes are occurring simultaneously in global precipitation, that this behavior cannot be explained by internal variability alone, and that external influences are responsible for the observed precipitation changes. Whereas existing model experiments are not of sufficient length to differentiate between natural and anthropogenic forcing terms at the 95% confidence level, we present evidence that the observed trends result from human activities.
Author Marvel, Kate; Bonfils, Céline
DOI 10.1073/pnas.1314382110
Date November 26, 2013
Issue 48
Journal Proceedings of the National Academy of Sciences
Pages 19301-19306
Title Identifying external influences on global precipitation
Volume 110
Year 2013
Bibliographic identifiers
.reference_type 0
_record_number 19564
_uuid d4281766-253c-4947-abeb-f11215fda44b