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Topics - Hefaistos

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Consequences / Temperature signals from Covid-19
« on: May 02, 2020, 12:30:04 AM »
What kind of climate signals should we expect from the lockdown policies related to Covid-19?

We know that economic activity is down a lot, there is a global recession/depression.

CO2 emissions down, but CO2 levels at Mauna Loa increasing.

Will be interesting to follow temperature developments. Will the recession, the increadible decrease in economic activity, in travel, in transport have any effect on global temperatures?

The null hypothesis is that temperatures will follow CO2 up.

I was playing around with temperature and CO2 data at woodfortrees, and created the attached graph.

We have an interesting temperature signal in the UAH6 temperatures, going down in April.
Hadcrut isn't updated yet.

https://woodfortrees.org/plot/uah6/from:2015/plot/hadcrut4gl/from:2015/plot/esrl-co2/from:2015/normalise

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Consequences / Places becoming more livable
« on: July 06, 2017, 10:23:00 PM »
Article about very interesting redistribution of humidity due to global warming. From dry to wet: Rainfall might abruptly increase in Africa’s Sahel . It's a region that historically has been more humid, and 'green' than todays very arid/desert.

"Climate change could turn one of Africa's driest regions into a very wet one by suddenly switching on a Monsoon circulation. For the first time, scientists find evidence in computer simulations for a possible abrupt change to heavy seasonal rainfall in the Sahel, a region that so far has been characterized by extreme dryness. They detect a self-amplifying mechanism which might kick-in beyond 1.5-2 degrees Celsius of global warming."

https://www.pik-potsdam.de/news/press-releases/from-dry-to-wet-rainfall-might-abruptly-increase-in-africa2019s-sahel

Research article, paywalled:
http://www.earth-syst-dynam.net/8/495/2017/

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