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Messages - Dr G

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Arctic sea ice / Re: The 2019 melting season
« on: June 20, 2019, 09:33:04 AM »
I agree about the craziness of the weather forecast. I think it is the worst heatwave in the Arctic ever, even worst than the one in July 2007 or July 2011 or July 2012. As a consequence of the warmth, moisture, and high pressure, Z500 height is mind blowing with values up to 5 800 gdam !
A simple but convenient way to define the northern border of the tropical belt is by using the belt of highest Z500. Here this belt is near to break away with a secondary maximum wich, around the Pacific, is not so secondary as Z500 is about the same other Arctic than over Hawa├»i ! I have never seen such a thing.... This also means clear skies but also, as moisture content is high, reduced outgoing longwave radiation.  I agree with Frivolous, we can't overstate how epic is the weather forecast.

Hi, long time lurker hopefully I've got this quote button thing right and thank you Neven for running this fantastic resource and to you all for your contributions  :) :) :) :).

Question...I can see the crazy pattern over the Artic in this graph, but can someone explain what/significance of what this is showing or direct me to appropriate thread?


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