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Guys, it is both. More heat energy means more evaporation, and more melting, and more winds, and bigger storms. This brings changes to the weather patterns, and some places get more rain, and some places gets more drought.
If in CA, there is normally snow, that builds up as snow pack, and that snow pack melts during the summer, providing water. But, if instead it comes down as rain -- a lot more rain, this causes flooding and landslides now; and later in the summer since there is much less snow to melt, you get a drought.
Add to this, you are also getting more lightning, and during droughts, you get more fires, which wipes out vegetation -- then when you get a lot of rain all at once, you can get landslides.
It is very different to get 15 inches of rain slowly during the year, than it is to get 35 inches all in a couple of months.
This is what is happening around the world. More droughts and more rain, bigger storms, and more lightning, more snow where there didn't used to be much snow, and higher temperatures, with more water vapor, acidifying oceans, melting glaciers, and glacier fed rivers will diminish, forests are dieing, etc., etc.
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