Climate Change - Precipitation

Copyright © 2007 Ken Polsson
internet e-mail: kpolsson@islandnet.com
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This page presents notes on scientific published articles related to Precipitation.
Article: "Aerosol Effect on Cloud Droplet Size Monitored from Satellite."
  • The effect of aerosols on cloud microphysics is significant and occurs on a global scale.
  • Aerosol radiative forcing has a net cooling effect on climate.
  • Aerosols in clouds increases number of droplets, reducing mean droplet size.
  • Aerosols in clouds also suppresses rain.
  • Satellite measurement cannot distinguish between natural and man-made aerosols.
  • Large part of aerosol effect on clouds probably from man.

Source: Science, Volume 295, Number 5556.
Date: 2002 February 1
Article: "Insignificant Change in Antarctic Snowfall Since the Interglacial Geophysical Year."
  • No statistically significant change in Antarctic snowfall since 1950s.
  • Antarctic snowfall is not currently compensating for melting at ice sheet periphery.
  • Climate models that predict increasing precipitation over Antarctic in conjunction with warming may need revisiting.

Source: Science, Volume 313, Number 5788.
Date: 2006 August 11
Article: "Detection of human influence on twentieth-century precipitation trends."
  • Anthropogenic forcing has had a detectable influence on observed changes in average precipitation.
  • Mankind contributed significantly to observed increases in precipitation in North Hemisphere mid-latitudes.
  • Mankind contributed significantly to observed drying in precipitation in North Hemisphere subtropics and tropics.
  • Mankind contributed significantly to observed moistening in South Hemisphere subtropic and deep tropics.

Source: Nature, Volume 448, Number 7152.
Date: 2007 July 26
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Last updated: 2007 Nov 24.
Global Warming and Climate Change
Copyright (C) 2007 Ken Polsson (email: kpolsson@islandnet.com)
URL: http://www.islandnet.com/~kpolsson/climate)

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