The Weather Outlook

Remove ads from site

Quantum
  • Quantum
  • Advanced Member Topic Starter
03 January 2019 17:59:58

 

So the models are forecasting some arctic wide low anomalies (note 'Arctic -2.6C from average'). A 2.6 degree anomaly over a region as large as the arctic is not unusual at all, certainly not thread worthy. However a 2.6C degree negative anomaly over the arctic specifically is extremely rare. Climate change, overall, is usually too slow to notice on short time scales but global warming is not uniform at all; the arctic is warming extremely rapidly whereas the equatorial regions are barely warming at all. The consequence of this is that it is extremely unusual to see negative 2m anomalies across the arctic ocean. This will be the first time this has happened in, likely, years. It did happen briefly this Autumn for a week around September I think but it was an anomaly of something like -0.1C (which is still rare enough in of itself).

It may seem counterintuitive to think of a 0C anomaly to be rare when, by definition, it means 'average' but it really shows how much the average has changed since 1979-2000. The cold anomaly seems to be caused by a region of high pressure and clear skies over the arctic basin and deep cold core lows over high latitude land masses. Its pretty much the worst outcome in the arctic mid summer for sea ice when it brings high ice export and very high temperatures but during the winter the opposite is the case (although its a much rarer synoptic pattern in the winter).

But yeh to see blues over the entire arctic like this is a very rare event indeed. 

 

 


25/26 (850hpa temp) 11 days snow/sleet falling

18/11 (-4) 19/11 (-6) 20/11 (-6) 01/01 (-7) 04/01 (-10) 10/01 (-7) 11/01 (-3) 30/01 (-1) 13/02 (-6) 15/02 (-4) 18/02 (-6)

24/25 10d

18/11 (-6) 19/11 (-6) 23/11 (-2) 22/12 (-5) 04/01 (-5) 05/01 (0)14/02 (0) 15/02 (0)12/03 (-6) 13/03 (-6)

23/24 8d

29/11 (-6) 30/11 (-6) 02/12 (-5) 03/12 (-5) 04/12 (-3) 16/01 (-3) 18/01 (-8)08/02 (-5)

22/23 7d

18/12 (-1)06/03 (-6) 08/03 (-8) 09/03 (-6) 10/03 (-8) 11/03 (-5) 14/03 (-6)

21/22 12d

Quantum
  • Quantum
  • Advanced Member Topic Starter
03 January 2019 18:10:46

Its definitely not the 'warm arctic, cold continents' pattern you expect to see during an SSW either. 

 

 


25/26 (850hpa temp) 11 days snow/sleet falling

18/11 (-4) 19/11 (-6) 20/11 (-6) 01/01 (-7) 04/01 (-10) 10/01 (-7) 11/01 (-3) 30/01 (-1) 13/02 (-6) 15/02 (-4) 18/02 (-6)

24/25 10d

18/11 (-6) 19/11 (-6) 23/11 (-2) 22/12 (-5) 04/01 (-5) 05/01 (0)14/02 (0) 15/02 (0)12/03 (-6) 13/03 (-6)

23/24 8d

29/11 (-6) 30/11 (-6) 02/12 (-5) 03/12 (-5) 04/12 (-3) 16/01 (-3) 18/01 (-8)08/02 (-5)

22/23 7d

18/12 (-1)06/03 (-6) 08/03 (-8) 09/03 (-6) 10/03 (-8) 11/03 (-5) 14/03 (-6)

21/22 12d

Gray-Wolf
03 January 2019 19:33:28

Its definitely not the 'warm arctic, cold continents' pattern you expect to see during an SSW either. 

 

 

Originally Posted by: Quantum 

Maybe we are starting to see the 'tweak' that 'low solar' brings to this new, seemingly annual now?, polar night jet vortex split/SSW?

If the strat is not able to manhandle the trop due to the 'low solar' propensity to High Pressure in the N.Atlantic?

I do think the spilling of the Arctic's guts is going to being about 3 regions of our hemisphere seeing a mid winter blast over the coming weeks?

I do not think the UK is one of them but Eastern europe ( and south into turkey/Greece/M.E.) will surely be one!!!

I kind of think this another opportunity to see just how much the 2012 ice low placed on the circulation of our hemisphere with post 07' patterns allowing for our winter of 09'/10 but the further drop in summer ice , in 2012, now means that pattern is shunted east of us toward eastern Germany/Poland etc?

I get the feeling our Atlantic based highs will keep on plunging any cold from the East to our south?


Koyaanisqatsi

ko.yaa.nis.katsi (from the Hopi language), n. 1. crazy life. 2. life in turmoil. 3. life disintegrating. 4. life out of balance. 5. a state of life that calls for another way of living.

VIRESCIT VULNERE VIRTUS

AIMSIR
03 January 2019 19:44:45

The extra heat being lost to space during the long arctic night was bound to run out or evaporate at some stage, especially with little or no backup left to replace it.. imo.

The oceans are almost done by now at 0.3 C anomalies.

The Northern hemispheric atmosphere is still losing rapidly, mostly from high latitude or arctic regions.

The Southern part is nearly finished with both.

Northern Pacific and Northern Atlantic oceans, the two main ports, are drained of heat by now with not much left to offer. imo.

https://climatereanalyzer.org/wx_frames/gfs/ds/gfs_nh-sat1_sstanom_1-day.png

Quantum
  • Quantum
  • Advanced Member Topic Starter
03 January 2019 20:14:33

The extra heat being lost to space during the long arctic night was bound to run out or evaporate at some stage, especially with little or no backup left to replace it.. imo.

The oceans are almost done by now at 0.3 C anomalies.

The Northern hemispheric atmosphere is still losing rapidly, mostly from high latitude or arctic regions.

The Southern part is nearly finished with both.

Northern Pacific and Northern Atlantic oceans, the two main ports, are drained of heat by now with not much left to offer. imo.

https://climatereanalyzer.org/wx_frames/gfs/ds/gfs_nh-sat1_sstanom_1-day.png

Originally Posted by: AIMSIR 

But usually during the winter the positive anomalies increase, not the other way round. Its not unusual at all to see huge 5C positive anomaly spikes at this time of year. The current 'cold continent, cold arctic' pattern is extremely unusual. If we get a northerly blast it could be pretty intense!

 


25/26 (850hpa temp) 11 days snow/sleet falling

18/11 (-4) 19/11 (-6) 20/11 (-6) 01/01 (-7) 04/01 (-10) 10/01 (-7) 11/01 (-3) 30/01 (-1) 13/02 (-6) 15/02 (-4) 18/02 (-6)

24/25 10d

18/11 (-6) 19/11 (-6) 23/11 (-2) 22/12 (-5) 04/01 (-5) 05/01 (0)14/02 (0) 15/02 (0)12/03 (-6) 13/03 (-6)

23/24 8d

29/11 (-6) 30/11 (-6) 02/12 (-5) 03/12 (-5) 04/12 (-3) 16/01 (-3) 18/01 (-8)08/02 (-5)

22/23 7d

18/12 (-1)06/03 (-6) 08/03 (-8) 09/03 (-6) 10/03 (-8) 11/03 (-5) 14/03 (-6)

21/22 12d

AIMSIR
03 January 2019 20:18:39

 

But usually during the winter the positive anomalies increase, not the other way round. Its not unusual at all to see huge 5C positive anomaly spikes at this time of year. The current 'cold continent, cold arctic' pattern is extremely unusual. If we get a northerly blast it could be pretty intense!

 

Originally Posted by: Quantum 

Especially with a very persistent, through this year, 0.1 C  SST Anomaly over the North Atlantic.

Not much room for moderation?

Quantum
  • Quantum
  • Advanced Member Topic Starter
03 January 2019 23:03:26

Especially with a very persistent, through this year, 0.1 C  SST Anomaly over the North Atlantic.

Not much room for moderation?

Originally Posted by: AIMSIR 

Wouldn't the atlantic cold spot be more useful in a returning polar maritime? And jesus I don't want another 2014!

 


25/26 (850hpa temp) 11 days snow/sleet falling

18/11 (-4) 19/11 (-6) 20/11 (-6) 01/01 (-7) 04/01 (-10) 10/01 (-7) 11/01 (-3) 30/01 (-1) 13/02 (-6) 15/02 (-4) 18/02 (-6)

24/25 10d

18/11 (-6) 19/11 (-6) 23/11 (-2) 22/12 (-5) 04/01 (-5) 05/01 (0)14/02 (0) 15/02 (0)12/03 (-6) 13/03 (-6)

23/24 8d

29/11 (-6) 30/11 (-6) 02/12 (-5) 03/12 (-5) 04/12 (-3) 16/01 (-3) 18/01 (-8)08/02 (-5)

22/23 7d

18/12 (-1)06/03 (-6) 08/03 (-8) 09/03 (-6) 10/03 (-8) 11/03 (-5) 14/03 (-6)

21/22 12d

AIMSIR
03 January 2019 23:17:03
The main idea of my thought would be, given a sustained cool North Atlantic, any blow from the Arctic would not be moderated by relatively warm sst's.
Chunky Pea
03 January 2019 23:35:10

In the run up to Christmas, this GFS model predicted Arctic temps to fall negative by the end of December. Clearly this did not happen in reality.. but maybe it will this time. 


Patrick,

East Galway, Ireland.

marco 79
04 January 2019 12:07:29
Arctic is still running with a +3.3c anomaly....In fact the N/Hemisphere as a whole is +1.2c over budget...
Home : Mid Leicestershire ...135m ASL
Quantum
  • Quantum
  • Advanced Member Topic Starter
04 January 2019 13:51:37

Arctic is still running with a +3.3c anomaly....In fact the N/Hemisphere as a whole is +1.2c over budget...

Originally Posted by: marco 79 

For now. Its forecast to plummet over the next few days. The GFS is now predicting an eventual -3.7C anomaly for the arctic.

 


25/26 (850hpa temp) 11 days snow/sleet falling

18/11 (-4) 19/11 (-6) 20/11 (-6) 01/01 (-7) 04/01 (-10) 10/01 (-7) 11/01 (-3) 30/01 (-1) 13/02 (-6) 15/02 (-4) 18/02 (-6)

24/25 10d

18/11 (-6) 19/11 (-6) 23/11 (-2) 22/12 (-5) 04/01 (-5) 05/01 (0)14/02 (0) 15/02 (0)12/03 (-6) 13/03 (-6)

23/24 8d

29/11 (-6) 30/11 (-6) 02/12 (-5) 03/12 (-5) 04/12 (-3) 16/01 (-3) 18/01 (-8)08/02 (-5)

22/23 7d

18/12 (-1)06/03 (-6) 08/03 (-8) 09/03 (-6) 10/03 (-8) 11/03 (-5) 14/03 (-6)

21/22 12d

AIMSIR
05 January 2019 02:32:06

Lost to space in the cold Arctic night.


The problem is where the backup heat might come from to fill the gap?

It might not be coming from the oceans.

As it seems there's not much left.

https://climatereanalyzer.org/wx_frames/gfs/ds/gfs_nh-sat1_sstanom_1-day.png

Remove ads from site