David Roberts @drvox Seattleite transplanted from Tennessee; now blogging for vox.com/ about energy politics. Climate hawk, deficit dove. Not a doctor. Aug. 16, 2019 1 min read

"The world is gradually becoming less green, scientists have found. Plant growth is declining all over the planet, and new research links the phenomenon to decreasing moisture in the air — a consequence of climate change." But we're richer!  https://www.eenews.net/climatewire/2019/08/15/stories/1060953613 

Climate types! In the comments, people are asking about this study: doesn't warmer air hold more moisture? So why is climate change making dryer air?

Anyone want to drop some science and explain this?

All right, best as I can make out from this article (h/t @climateleaf), the answer is: yes, ceteris paribus, increased warmth over land will increase water vapor saturation, but decreased ocean evaporation (from lower wind speeds) more than counteracts.

 https://www.newsweek.com/global-vegetation-growth-has-stalled-last-20-years-scientists-may-now-know-why-1454102 

That is to say, the wind is blowing slower & picking up less evaporated ocean water to carry over land. That is raising the vapor pressure deficit (VPD), slowing plant growth. At least I think that's it.

Thank you for coming on this journey with me.


You can follow @drvox.



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