Can U explain how/why rainfall patterns are changing if you know the amt of total H2O on Earth is constant?

Question

I think this is primarily a thermodynamics question but I am open to other kinds of scientifc explanation. Please do not give a global warming answer unless you can explain the mechanism or pont to the physical issues behind the locational shifts resulting in more flooding in some places and the growth of desertification in other places. I ask this Q seeking better answers than I have so I can explain the reason for the difference to others better than I can. This is a scientific Q, casual A's just don't cut it.

Answer 1

Global rainfall equals evaporation rate, averaged over time. If the climate gets hotter, the evaporation rate increases and, therefore, so does the rainfall, at least averaged over the planet. Heat also drives wind patterns, which can be complicated. The new greater rainfall would not necessarily be equally distributed, and in some places the rain might actually decrease.

Answer 2

Earth’s climate is a chaotic system; it is far too complex for the kind of pat answer you seem to expect. World weather patterns are strongly influenced by such things as the Gulf Stream and the Himalaya Mountains, but no one factor is in control. We program all the available data into supercomputer models; yet different models come up with different results. This just proves we don’t have enough data or understanding to explain climate change. However, there is some agreement among all of our models; if they all predict drastic consequences of global warming, don’t you think we should try to prevent it?

Answer 3

This IS a global warming question. You need to read up on the Partition Function in statistical mechanics. Environmental scientists warned us in the 1980's, that one of the most severe consequences of global warming would be that the jet stream would be altered which would cause our farms to potentially not get rain and the places we lived to get flooded.

My second sentence has the info you need to look up more rigorous answers that "cut it". But the bottom line is quit driving an SUV and tell your friends who do that they are idiots.

Answer 4

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Answer 5

to give the simplist answer possible, the amount of rainfall depends on other factors besides the amount of H2O on the planet