People send me stuff. h/t to WUWT reader “Theyouk”
Here we have a graphic from the Danish Meteorological Institute that shows Greenland has increased it’s surface melt dramatically in a very short time.
Source: http://www.dmi.dk/uploads/tx_dmidatastore/webservice/e/n/i/b/m/Melt_combine.png
The question is: is it real, or some measurement artifact or processing error?
The temperature at the Greenland summit station on June 10th was well below freezing, with a daytime high of 17°F, so it doesn’t seem the conditions are conducive for a widespread melt.
We have seen dramatic events before (in 2012) that turned out to be real, but the study behind that event suggests it doesn’t happen except about 100 to 150 years apart and is a special combination of events.
We’ll see what DMI does on the next update. Meanwhile, if anyone has any explanations, feel free to leave a comment.
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So far in 2018 … the Greenland melt almost exactly mirrors 2012’s
https://nsidc.org/greenland-today/greenland-surface-melt-extent-interactive-chart/
I believe it is the heat from Scandinavia and North America that has flowed in over Greenland. In Scandinavia we have had unusual warm weather for 3 weeks until now, with over 25 C and that is not normal even though May and the beginning of June is a beautiful time with blue sky normally. It came a heavy snowfall a week ago with the heat over southern Greenland and the mass balance grew rapidly there. But the temperature in the Arctic is below normal so it seems that it was only the south of Greenland that was hotter and started to smelt. But if you look of the map of the daily surface mass balance it has not looked as it is melting more than normal so it is only the arias with melting that have grown large, but the melting is not huge and it is not looking as the area is huge either so the melting there must be minimal. I believe it was very warm winds that made it and the melting started all over the place but very little so there are some water that indicate melting. The mass balance chart is not going down yet but have now stopped growing 10% above the normal level at this time. We will see if it starts to fall now or stay up there a little longer.
http://ocean.dmi.dk/arctic/meant80n.php
Data sources giving inconvenient results are being allowed to decay.
It has been “melting” with the same coverage and pattern for several days in a row. The image for June 10-11 is exactly the same as that for June 9-10 shown above, and for June 7-8 (captured by Tony Heller on his blog.) Looks like a glitch. Think they’ll adjust the graph when they fix the glitch?
This probably shows the area where water appears (due to, for example, rainfall). Only that this water freezes immediately.
It is the area where surface melt is supposedly happening. Not rainfall, melt.
From the dmi.dk surface mass balance page:
It is now (if June 7 was the first appearance) six days straight with surface melt area of 37% in almost the exact same pattern. The graphic for June 12 looks exactly the same as the one for June 10 in this article. Not kinda the same – exactly the same. It has changed only very slightly since June 7. Joe Bastardi noticed it seemed stuck, on June 8.
I’ve been watching the DMI site for years and I don’t recall a melt pattern and percentage sticking for almost a week with no changes. I think it’s a glitch.
The biggest glich-like aspect is the surface melt percentage spiking to 37% and staying at 37% for going on a week.
Here’s the source page. It says the plot shows the area which has undergone some melting. The plot just above says the cumulative mass budget is positive.
https://www.dmi.dk/en/groenland/maalinger/greenland-ice-sheet-surface-mass-budget/
I suppose we can say that about 40% of the total area has undergone some melting (this could have been a tiny fraction of the total ice, and in general the total area has been gaining due to snowfall.
I think a rogue NOAA “adjustment” algorithm must have infected the Danish databases.
Must say. I like the Trump.
Why have ANY tarifs, AT ALL?