All the claims about global warming causing hurricanes have by now been very widely debunked so the Warmists have to find some alternative disaster. So now they turn to rain. It's basic physics that warmer seas will lead to more precipitation but Warmists don't care about basic physics so they have to "discover" the same thing by some more roundabout route. "Powerful rainstorms" are now said to be a problem caused by warming.
A problem?? What it wrong with heavy rain? It is great for crops. I grew up in the tropics (North Qld.), where we measured our annual rainfall not in inches but in yards. And the rain was so heavy we used to say that it came down "in sheets". All that rain was slightly pesky at times but the environment sure was lush and all the crops grew like mad. We had fields of grass that was over 6' high. And the grass concerned (sugar cane) was and is the world's cheapest source of sugar and ethanol. Heavier rain would be GREAT!
And India and much of Asia have lived with monsoonal rain for millennia. They seem to have survived somehow. People actually welcome the monsoon there, funnily enough
Climate models have long predicted that global warming will increase the intensity of extreme precipitation events. A new study conducted at the University of Miami and the University of Reading (U.K.) provides the first observational evidence to confirm the link between a warmer climate and more powerful rainstorms.
One of the most serious challenges humanity will face in response to global warming is adapting to changes in extreme weather events. Of utmost concern is that heavy rainstorms will become more common and more intense in a warmer climate due to the increased moisture available for condensation. More intense rain events increase the risk of flooding and can have substantial societal and economic impacts.
To understand how precipitation responds to a warmer climate, researchers in this study used naturally-driven changes associated with El Ni¤o as a laboratory for testing their hypotheses. Based on 20 years of satellite observations, they found a distinct link between tropical rainfall extremes and temperature, with heavy rain events increasing during warm periods and decreasing during cold periods. "A warmer atmosphere contains larger amounts of moisture which boosts the intensity of heavy downpours," said Dr. Brian J. Soden, associate professor at the University of Miami Rosenstiel School of Marine & Atmospheric Science.
The report, "Atmospheric Warming and the Amplification of Precipitation Extremes," previewed in Science Express this Thursday, August 7, and published in an upcoming issue of Science, found that both observations and models indicated an increase in heavy rainstorms in response to a warmer climate. However, the observed amplification of rainfall extremes was found to be substantially larger in the observations than what is predicted by current models. "Comparing observations with results from computer models improves understanding of how rainfall responds to a warming world" said Dr. Richard P. Allan, NERC advance fellow at the University of Reading's Environmental Systems Science Centre. "Differences can relate to deficiencies in the measurements, or the models used to predict future climatic change"
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