Sonntag, 11. Dezember 2016

Arctic weather and temperature trends



There are some reports that the arctic is glowing or burning these days.

First of all:

  • The temperatures are still below 0°C.
  • The ice area is still increasing.
  • It is an observation of about one month in climate history
  • 2015/16 we had one of the strongest El Ninos, heating up the atmosphere globally.
So let's check the surface data:

http://www.esrl.noaa.gov/psd/map/ANIM/sfctmpmer_01a.fnl.11.gif

Yes, we have here up to 20°C higher temps than average around the north pole.

But we have also up to 20°C lower temps than average around the south pole, in Siberia and in places in Northeast America and Southamerica. Looks ike local weather patterns.


Let's check the ice extend compared to 9 years before (I just couldn't get oter data than march):

This is a comparision of the same date 2007 and 2016. The red/purple area is the sea ice extend:

https://i0.wp.com/wermenh.com/wuwt/cryo_compare_small.jpg

No so much difference.


Here a fresh graph from 10th of December about the ice extend during the last years in the Arctic:

http://ocean.dmi.dk/arctic/plots/icecover/icecover_current_new.png
The black/red line is from this year.

  • About the same amount of ice during winter than in previous years. 
  • This years lots more of ice in the summer than in 2012 (blue line).
  • And a tiny blip downwards for a short time in this November / December. 
So far about catastrophical melting. Just remember: The arctic sea ice area is still increasing.

Now check the South Pole ice extend:

http://nsidc.org/data/seaice_index/images/daily_images/S_stddev_timeseries.png
During Antarctic winter (September) the sea ice was within the normal range. In november a small downblip, but heading back to normal in December. No drama at all.

Something which happens within some weeks is clearly weather.

So we check for the longer trend:


The Arctic sea ice went down considerably the last 37 years.
The Antarctic sea ice had a pretty incline during the same time.

But here is something interesting: For 13 years (Arctic) and for 15years (Antarctic) we have a pause! One nearly zero trend in sea ice for both areas.

And here an overview of global sea ice area:














No big  change in any area of sea ice. Total Global sea ice always close to the 1979-2015 average.

Seems there is always some balancing in any of the Earth's systems.

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