Monday, January 30, 2012

Rainfalls

Author: Stephen Ornes
Date Published: November,30,2011
http://www.sciencenewsforkids.org/2011/11/dirty-clouds-change-rainfall/

Everyone has heard of the water cycle, with all the different steps, evaporation, condensation and precipitation.We know whatever goes up finds it way down.Some studies about "airborne particles" suggest they affect weather and clouds. Aerosols occur naturally and are made up of dirt and some other particles, however these also do come from humans. Studies have shown some connections between weathers and where they occur:
Dry place/lower: clouds hold in the water longer causing droughts
Moist/high areas: faster/more often precipitation
In Oklahoma some studies have been taking about 10 years concentrating on the connections to weather. A clear answer is not yet been discovered, but we have learned that rainfall depended on the amount of aerosols in the cloud and the type of cloud.  In low plains, if clouds would have too many aerosols they would condense but no precipitation would be happening, in higher plains, the water molecules evaporate, and due to the cold weather they freeze becoming heavier and easier to fall down to earth.

"Climate scientist Daniel Rosenfeld told Science News that an abundance of aerosols in clouds can double the chance of heavy rain. Rosenfeld, who studies the science of clouds and rain at the Hebrew University of Jerusalem, also worked on the new study."
I found this topic interesting because it had some explanation about why clouds are how they are and how aerosols affect them. The writing wasn't too long so I thought it would be fun to read, and it wasn't something my classmates had already posted about. \


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