Importance of snow to global precipitation

AMS Citation:
Field, P. R., and A. J. Heymsfield, 2015: Importance of snow to global precipitation. Geophysical Research Letters, 42, 9512-9520, doi:10.1002/2015GL065497.
Date:2015-11-16
Resource Type:article
Title:Importance of snow to global precipitation
Abstract: Precipitation controls the availability of drinking water and viability of the land to support agriculture. Failure to accurately predict the location, magnitude, and frequency of precipitation impacts not only numerical weather forecasting but also climate modeling. It has been proposed that most rainfall events originate from ice that has melted to form rain. Here we use remote sensing from spaceborne cloud radar to quantify that idea. A new metric is constructed to quantify the fraction of rain events at the surface that are linked to snow melting at a higher altitude. CloudSat is used to show the global variation of the importance of snow in the precipitation process. In the tropics, subtropics, midlatitude and polar regions 0.3, 0.4, 0.8, and >0.9, respectively, of all precipitation events (>1 mm/d) are linked to the production of snow in clouds.
Peer Review:Refereed
Copyright Information:Copyright 2015 American Geophysical Union.
OpenSky citable URL: ark:/85065/d7hq41db
Publisher's Version: 10.1002/2015GL065497
Author(s):
  • P. Field
  • Andrew Heymsfield - NCAR/UCAR
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