Quote:
Originally Posted by redpoint5
A 2 degree rise here at the 45th means I can stop wearing flannel earlier in the year.
If you have a link to the study that predicts 50% crop failure, I'd like to see it. Sounds like a whataboutism to me.
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NATURE,Volume 543,16 March,2017,p 290
RESEARCH HIGHLIGHTS
'CLIMATE CHANGE: Warming poses risk to US farming'
Xin Zhong Liang et al.,
University of Maryland,College park,MD,USA
study: effects of regional climate on US farming economy,for Midwest corn and soybean.
*Agricultural productivity in the US could return to pre-1980s levels by 2050
*Between 1981 and 2010,delta-T and delta- rain = 70% of change in productivity
*Data incorporated,with current climate projections into a model,yielded:
-under medium greenhouse gas emission scenario,farm productivity will fall by 2.8% per year,cutting farm output by 50% by 2034.
-under high GHG emissions,farm output would fall by 4.3%/year,with a 50% drop by 2026.
*Top contributor to decline is hotter summers
From Proceedings of the National Academy of Sciences,USA
http://doi.org/b2vg(2017)
-as mentioned,farm output could be at pre-1980s level by 2050.
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There are other issues farmers are facing which don't bode well for the future
of doubling the food supply from 2005 levels by 2050.