billvon 3,112 #26 October 16, 2007 >So if I understand correctly the droughts are nothing to do with global >warming, it's the people cutting down the trees that are the problem. Deforestation is indeed one of the drivers behind climate change, although it affects local precipitation far more than it affects global temperatures. It doesn't affect too many places because many places are either not deforested or don't have forests to begin with. Edited to add - one of the side effects of deforestation is the removal of a CO2 sink, which means that the environment can't mitigate our increased emissions as well. Again, it's a small effect overall. Quote Share this post Link to post Share on other sites
kallend 2,147 #27 October 16, 2007 QuoteQuoteOver land, generally higher temperatures cause drying of the soil and thus results in _less_ rain over the course of a year. But warmer temps (over land) are causing snow accumulation on Mont Blanc. Why? Prevailing winds and proximity to the Mediterranean, maybe?... The only sure way to survive a canopy collision is not to have one. Quote Share this post Link to post Share on other sites
NCclimber 0 #28 October 16, 2007 QuoteQuoteBut warmer temps (over land) are causing snow accumulation on Mont Blanc. Why? Prevailing winds and proximity to the Mediterranean, maybe? I'm guessing Mont Blanc's proximity to the Mediterranean has been fixed for quite some time. Not really an AGW issue. Quote Share this post Link to post Share on other sites
kallend 2,147 #29 October 16, 2007 QuoteQuoteQuoteBut warmer temps (over land) are causing snow accumulation on Mont Blanc. Why? Prevailing winds and proximity to the Mediterranean, maybe? I'm guessing Mont Blanc's proximity to the Mediterranean has been fixed for quite some time. Not really an AGW issue. It is if the Med is warming up and the winds are changing.... The only sure way to survive a canopy collision is not to have one. Quote Share this post Link to post Share on other sites
billvon 3,112 #30 October 16, 2007 >I'm guessing Mont Blanc's proximity to the Mediterranean has been fixed >for quite some time. Yes, but the temperature has not been. Cool weather over cool water = less rain. Warm weather over warm water = more rain. That's why NY gets more rain than San Diego - the water around them is warmer. Quote Share this post Link to post Share on other sites
NCclimber 0 #31 October 16, 2007 Quote>I'm guessing Mont Blanc's proximity to the Mediterranean has been fixed >for quite some time. Yes, but the temperature has not been. Cool weather over cool water = less rain. Warm weather over warm water = more rain. That's why NY gets more rain than San Diego - the water around them is warmer. It's cooler in San Diego than New York? How about in western Washington? Juneau? Quote Share this post Link to post Share on other sites
billvon 3,112 #32 October 16, 2007 >It's cooler in San Diego than New York? In the summer, yes. In the winter, no. >How about in western Washington? Western washington is pretty cool compared to San Diego. Quote Share this post Link to post Share on other sites
NCclimber 0 #33 October 16, 2007 Quote >It's cooler in San Diego than New York? In the summer, yes. In the winter, no. But NYC gets more rainfall than San Diego every month of the year. Quote Share this post Link to post Share on other sites
billvon 3,112 #34 October 16, 2007 >But NYC gets more rainfall than San Diego every month of the year. Right. The warmer the water in relation to the land, the more rain. (NY is on the water, and the Gulf Stream keeps NY's water warmer than San Diego's, relative to the land.) Quote Share this post Link to post Share on other sites
