Warming Twice As Fast

As a zero order approximation you can divide the Earth into two regions:
* The equatorial region between the tropics.
* Everything else.

They are of roughly equal area and the equatorial region never significantly warms nor cools, it remains locked at a temperature in a narrow region around 300K. This is controlled by sea surface evaporation which is highly nonlinear as can be seen in the Argo data, as well as other places:

https://wattsupwiththat.com/2012/02/12/argo-and-the-ocean-temperature-maximum/

Thus … it is a well understood phenomenon that “climate change” happens almost exclusively in places far away from the equator. You might notice that if you average out two regions where one is changing and the other does not change, then the global average will be half as much as the region that does change. Think of it like a stick where one end does not move while the other end of the stick moves up and down … the middle of the stick always moves half as much.

Therefore if you select those places far from the equator such as Canada, the Arctic, Maine, Sweden, Finland, most of China, Ireland, Russia, etc. you discover they change twice as much as the global average. If you select places far away from the influence of sea surface temperature (e.g. top of a mountain) you discover exactly the same thing.

Math!!

There is a longstanding difficulty explaining to people what averages mean, and what they don’t mean … and why this is important to keep in mind whenever discussing average data. There is no person on Earth who lives in a global average temperature, we all live in a local temperature that changes every day and night. Any change in the global average is only significant to the extent that this might also reflect some local climate shift, which of course depends very much on where you do live.

via Real Climate Science

https://ift.tt/36BOTnv

December 15, 2019 at 10:49PM

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