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I read the weather report (in Danish). [1] The local warming in Greenland has already happened in previous years at that particular weather station. The spike

by mkempe 9y ago

I read the weather report (in Danish). [1] The local warming in Greenland has already happened in previous years at that particular weather station. The spike in temperature was caused by a foehn-like wind -- same as a chinook wind in the Colorado or Wyoming Rockies; the temperature in Boulder CO can easily climb 10-20 C over a few hours and rapidly melt the snow, then return to a deep freeze the next night. [1] http://www.dmi.dk/nyheder/arkiv/nyheder-2018/februar/plusgrader-i-nordgroenland/ http://www.dmi.dk/nyheder/arkiv/nyheder-2018/februar/plusgra...

davesque 9y ago
But...the ice levels are well below record lows during the satellite era according to the article. When are we going to stop kidding ourselves?
- mkempe 9y ago
  I haven't said anything about arctic sea ice levels, have I? I just provided a factual summary based on the original Danish report about the cause of a one-day temperature spike recorded at one weather station in Northern Greenland.
  - arcticfox 9y ago
    Right, but I don't see how anyone could read the article and find that single day a compelling part of the story. It could have easily been left out.
    - mkempe 9y ago
      It was not presented with appropriate context, and was not left out. It undermines the argument and thus should have been left out. That makes it interesting.
mkempe 9y ago
I'm guessing that the downvoters don't know what chinook winds can do nor what causes them. [1] The temperature swings can easily be double what I mentioned above, i.e. 40 C from -20C to +20C and back. Or it's a heresy to point out that a particular weather event is neither uncommon nor a sign of doom. [1] https://en.wikipedia.org/wiki/Chinook_wind https://en.wikipedia.org/wiki/Chinook_wind
- throwaway2048 9y ago
  that requires a very specific topographic configuration (nearby tall mountains with warm moist air flowing over them from one side, and the other side in their rain shadow). It is by no means a widespread phenomena, and absolutely does not explain events in the arctic.
  - mkempe 9y ago
    The Danish meteorological report I linked to explicitly states that the temperature spike was caused by a foehn-like wind, and that the same phenomenon has already been recorded at the same weather station in past years.
bigbugbag 9y ago
you've been seconded: https://news.ycombinator.com/item?id=16461676#16463992 https://news.ycombinator.com/item?id=16461676#16463992

by mkempe 9y ago

davesque 9y ago

But...the ice levels are well below record lows during the satellite era according to the article. When are we going to stop kidding ourselves?

mkempe 9y ago
I haven't said anything about arctic sea ice levels, have I? I just provided a factual summary based on the original Danish report about the cause of a one-day temperature spike recorded at one weather station in Northern Greenland.
- arcticfox 9y ago
  Right, but I don't see how anyone could read the article and find that single day a compelling part of the story. It could have easily been left out.
  - mkempe 9y ago
    It was not presented with appropriate context, and was not left out. It undermines the argument and thus should have been left out. That makes it interesting.

mkempe 9y ago

I'm guessing that the downvoters don't know what chinook winds can do nor what causes them. [1] The temperature swings can easily be double what I mentioned above, i.e. 40 C from -20C to +20C and back. Or it's a heresy to point out that a particular weather event is neither uncommon nor a sign of doom. [1] https://en.wikipedia.org/wiki/Chinook_wind https://en.wikipedia.org/wiki/Chinook_wind

throwaway2048 9y ago
that requires a very specific topographic configuration (nearby tall mountains with warm moist air flowing over them from one side, and the other side in their rain shadow). It is by no means a widespread phenomena, and absolutely does not explain events in the arctic.
- mkempe 9y ago
  The Danish meteorological report I linked to explicitly states that the temperature spike was caused by a foehn-like wind, and that the same phenomenon has already been recorded at the same weather station in past years.

bigbugbag 9y ago

you've been seconded: https://news.ycombinator.com/item?id=16461676#16463992 https://news.ycombinator.com/item?id=16461676#16463992