This week's demo is simple, but illustrates this point - warm water evaporates more quickly than cool water. A warming earth dumps a lot of heat into the ocean. This warmer water then puts a lot of water vapor into the air. In winter, despite a warmer climate, heavy snow can fall.
Warm Water Evaporation from Matt Kuchta on Vimeo.
Granted, 0.2g of water evaporated doesn't really look all that impressive - but the temperature difference wasn't very big either. So one could easily "upscale" the demo using wide-mouth buckets or something that will present a large surface area to the atmosphere and evaporate even more water.
I'm all for discussion and reasoned debate over the mechanics of climate and the resulting weather patterns. But arguments based on easily falsified misconceptions are just plain dumb.
I see myself using this as a lab in my climatology course this fall....
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