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
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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
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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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