Arctic anomalies

 Arctic anomalies linked to extreme weather

http://arctic-news.blogspot.co.nz/2012/12/arctic-anomalies-linked-to-extreme-weather.html

Surface temperature anomalies of 20 degrees Celsius are not uncommon in the Arctic these days. The image below shows surface temperature anomalies on November 9 and 10, 2012.

Paul Beckwith, regular contributor to this blog, comments as follows on the conditions in the Arctic:

“The Arctic meteorology is unprecedented at the moment. Huge ridges of high pressure are crossing the Arctic ocean cutting off the Siberian cold region from the North American region. Very little cold air is present in the entire system, and it is exhibiting very bizzare fragmentation. Nothing like a “normal” polar vortex is apparent.

The ridge could just be due to this greatly reduced volume of cold air, but I suspect there is much more to the situation then that. It seems that there must be some source of heat to create this ridge. Could be warm air rising up from open water regions in the Arctic, however most of the warm water is now isolated from the atmosphere by the sea ice.

It seems more likely to me that the high levels of methane with GWP > 150 or higher are causing higher long-wave absorption and heating in these regions, but I have not seen methane concentration distributions over the Arctic from AIRS satellites lately.”

So, let's have a look at the methane levels for those days. The image below shows the methane levels for the above two days.

Paul continues:

“This is what abrupt climate change looks like. In the paleorecords global average temperatures increased over 6 degrees C within a decade or two, I suppose we will know more precise numbers in a few short years.”

Paul repeats the prediction he made back in June in this the post When the sea ice is gone

Paul Beckwith, B.Eng, M.Sc. (Physics),
Ph. D. student (Climatology) and
Part-time Professor, University of Ottawa

My projections for our planet conditions when the sea-ice has all vanished year round (PIOMAS graph projects about 2024 for this; I forecast 2020 for this) are:

• Average global temperature: 22°C (+/- 1°C)
  (rise of 6-8°C above present day value of about 15°C)
• Average equatorial temperature: 32°C
  (rise of 2 °C above present day value of 30°C)
• Average Arctic pole temperature: 10°C
  (rise of 30°C above present day value of -20°C)
• Average Antarctica pole temperature: -46°C
  (rise of 4°C above present day value of -50°C)
• Water vapor in atmosphere: higher by 50%
  (rise of 4% over last 30 years, i.e. about 1.33% rise per decade)
• Average temperature gradient from equator to North pole: 22°C
  (decrease of 28°C versus present day value of 50°C)
• Very weak jet streams (driven by N-S humidity gradient and weak temperature gradient as opposed to existing large temperature gradient)

- Result: very fragmented, disjointed weather systems
- Basic weather: tropical rainforest like in some regions; arid deserts in others with few regions in between.

Note: This scenario would require significant emissions of methane from the Arctic. Without this methane, the scenario would still occur but would take longer. Disclaimer: Best guess and subject to rolling revisions!

Meanwhile, extreme weather continues to strike areas outside the Arctic. In the U.K, airports were closed due to snow, following a period of heavy rainfall in November.

In Russia, extreme weather caused a huge traffic jam; see the BBC reports here and here, prompting Veli Albert Kallio, also one of this blog's contributors, to make the following comments:

Veli Albert Kallio in front of Peter Wadhams and John Nissen at
APPCCG event, March 13, 2012, House of Commons, London

“The Ewing-Dunn Precipitation (the lake-effect snow) from warmed-up Arctic Ocean has taken the Russian Government's winter preparations by suprise of its severity, with the Russian Government minister banging his fist as standing queues of vehicles reoccurs and is now 190 kilometres (120 miles) long between the capital Moscow and St. Petersburg.

I have been warning from the leaked files since July at this and other groups that December 2012 was going to be like this. We need to tell the Russian Interior Minister who bangs his fist on TV that he should not blame his road officials, but the global warming and loss of sea ice from the Barents and Kara Seas and generally warmed up North Atlantic - Arctic Ocean regions.”