John Mason
12 September 2013 17:36:36

Originally Posted by: AIMSIR 


Originally Posted by: John Mason 

Interesting how closely it's still following 2010 which had an uptick at almost the same time! Deja vu, anyone?

Is there a point to be made here, John?.


I'm genuinely confused and would be interested in an explaination..


 



The point is that I see certain melt-seasons parallelling one another, and wonder if such seasons may tend to fall into a number of subtypes i.e. can they be classified, a bit like UK winters?

doctormog
12 September 2013 18:13:05
Originally Posted by: John Mason 

Originally Posted by: AIMSIR 


Originally Posted by: John Mason 

Interesting how closely it's still following 2010 which had an uptick at almost the same time! Deja vu, anyone?

Is there a point to be made here, John?.


I'm genuinely confused and would be interested in an explaination..


 



The point is that I see certain melt-seasons parallelling one another, and wonder if such seasons may tend to fall into a number of subtypes i.e. can they be classified, a bit like UK winters?



Was that a very cryptic winter forecast? 😝 [sn_clown] [sn_bsmil]
John Mason
12 September 2013 18:43:17
Zonal?????
doctormog
12 September 2013 20:14:11
Originally Posted by: John Mason 

Zonal?????



No, like 2010-11 😂
Bill Illis
13 September 2013 12:11:10

 


The Arctic Sea Ice Area from the Cryosphere Today has probably reached its low point for the year (average date is Sept 10th and it doesn't vary from this by more than just a few days).


So it is the highest since 2006 and about 50% above 2012.


http://s12.postimg.org/z04colyu5/Cryosphere_Ice_Area_Sept10_2013.png


 



 


http://arctic.atmos.uiuc.edu/cryosphere/ 


http://arctic.atmos.uiuc.edu/cryosphere/timeseries.anom.1979-2008


 

Gandalf The White
13 September 2013 16:29:37

Originally Posted by: Bill Illis 


The Arctic Sea Ice Area from the Cryosphere Today has probably reached its low point for the year (average date is Sept 10th and it doesn't vary from this by more than just a few days).



You'll find that I have given the range of dates for the minimum earlier in this thread, Bill.


The average date since 2000 is in fact 15th September.


The average for the period 1979-2000 was indeed 10th September but it has tended to be later since 2000.


There could still be another week of losses - 16th to 18th is quite possible.  On the other hand it could indeed be today.


 


It is worth keeping in mind that after the record year of 2007 it took 5 years for the ice to fall below that level again.  A rebound from 2012 was always quite likely, wasn't it?


Location: South Cambridgeshire
130 metres ASL
52.0N 0.1E


Bill Illis
13 September 2013 18:29:53

Originally Posted by: Gandalf The White 


Originally Posted by: Bill Illis 


The Arctic Sea Ice Area from the Cryosphere Today has probably reached its low point for the year (average date is Sept 10th and it doesn't vary from this by more than just a few days).



You'll find that I have given the range of dates for the minimum earlier in this thread, Bill.


The average date since 2000 is in fact 15th September.


The average for the period 1979-2000 was indeed 10th September but it has tended to be later since 2000.


There could still be another week of losses - 16th to 18th is quite possible.  On the other hand it could indeed be today.


 


It is worth keeping in mind that after the record year of 2007 it took 5 years for the ice to fall below that level again.  A rebound from 2012 was always quite likely, wasn't it?



 


 


This is the sea ice AREA from the Cryosphere Today which has its own seasonality.


 

AIMSIR
13 September 2013 19:12:40

It should be interesting to see if we break through the Cryosat. 1979 2008 zero anomaly line this year


It's been quite a while.


I have a link below.


http://arctic.atmos.uiuc.edu/cryosphere/IMAGES/sea.ice.anomaly.timeseries.jpg

polarwind
13 September 2013 21:06:29

Originally Posted by: AIMSIR 


It should be interesting to see if we break through the Cryosat. 1979 2008 zero anomaly line this year


It's been quite a while.


I have a link below.


http://arctic.atmos.uiuc.edu/cryosphere/IMAGES/sea.ice.anomaly.timeseries.jpg


That graph is interesting in that it is clearly not linear as is often portrayed for many climate indicators.


"The professional standards of science must impose a framework of discipline and at the same time encourage rebellion against it". – Michael Polyani (1962)
"If climate science is sound and accurate, then it should be able to respond effectively to all the points raised…." - Grandad
"The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts". - Bertrand Russell
"Science is the belief in the ignorance of the experts" – Richard Feynman
"A consensus means that everyone agrees to say collectively what no one believes individually.”- Abba Eban, Israeli diplomat
Dave,Derby
Gandalf The White
13 September 2013 21:21:31
Originally Posted by: polarwind 

Originally Posted by: AIMSIR 


It should be interesting to see if we break through the Cryosat. 1979 2008 zero anomaly line this year


It's been quite a while.


I have a link below.


http://arctic.atmos.uiuc.edu/cryosphere/IMAGES/sea.ice.anomaly.timeseries.jpg


That graph is interesting in that it is clearly not linear as is often portrayed for many climate indicators.



Hardly Dave. Most of us are at pains to point out that the behaviour of thr climate is NON-linear
Location: South Cambridgeshire
130 metres ASL
52.0N 0.1E


AIMSIR
13 September 2013 23:19:26

Originally Posted by: John Mason 


Originally Posted by: AIMSIR 


Originally Posted by: John Mason 

Interesting how closely it's still following 2010 which had an uptick at almost the same time! Deja vu, anyone?

Is there a point to be made here, John?.


I'm genuinely confused and would be interested in an explaination..


 



The point is that I see certain melt-seasons parallelling one another, and wonder if such seasons may tend to fall into a number of subtypes i.e. can they be classified, a bit like UK winters?


I missed this post John.


Sorry for the late reply.


It woud help if you could identify the melt seasons you are talking about.


As for UK winters?.


A meteorlogical nightmare.


 

AIMSIR
14 September 2013 18:29:04
Quantum
14 September 2013 20:57:37
http://obuoy.datatransport.org/data/obuoy/var/plots/buoy7/camera/webcam.jpg? 


 


Was that the camera next to the lead that suddenly opened in Mid August? 


Anyway I can see some pancake ice forming, at least thats what it looks like to my untrained eye. Seems clear that new ice is starting to form in the central pack. Now, temps have been -5C or so for weeks in the beaufort and as yet no new ice has formed, do the satelittes fail to pick up on very young ice until it has reached a certain thickness? Very young ice is greasy and translucent and I can see why they might mistake it for water or even melt ponds. 


Twitter: @QuantumOverlord (general), @MedicaneWatch (medicane/TC stuff)
2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

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

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
Total: 12 days with snow/sleet falling.
Gandalf The White
15 September 2013 11:36:17

It looks likely that the minimum for sea ice extent for this year was reached on 12th September. 


Version 1 puts the figure at 5,000,313 - which puts it 6th lowest


Version 2 puts the figure at 4,809,288 - also 6th lowest


 


12th September is around 2 days earlier than the average for this century and 2 days later than the 1979-2000 mean


Location: South Cambridgeshire
130 metres ASL
52.0N 0.1E


AIMSIR
15 September 2013 12:22:10

Originally Posted by: Gandalf The White 


It looks likely that the minimum for sea ice extent for this year was reached on 12th September. 


Version 1 puts the figure at 5,000,313 - which puts it 6th lowest


Version 2 puts the figure at 4,809,288 - also 6th lowest


 


12th September is around 2 days earlier than the average for this century and 2 days later than the 1979-2000 mean


I think you could be right Peter.


Thanks for the stats.

polarwind
15 September 2013 12:50:08

Originally Posted by: Gandalf The White 

Originally Posted by: polarwind 


Originally Posted by: AIMSIR 


It should be interesting to see if we break through the Cryosat. 1979 2008 zero anomaly line this year


It's been quite a while.


I have a link below.


http://arctic.atmos.uiuc.edu/cryosphere/IMAGES/sea.ice.anomaly.timeseries.jpg


That graph is interesting in that it is clearly not linear as is often portrayed for many climate indicators.




Hardly Dave. Most of us are at pains to point out that the behaviour of thr climate is NON-linear

Indeed: Then why is the recent global temperature 'pause' often compared to a straight linear trend line that mimics the median projected AGW temperature rise of the models rather than for instance the projections of the models that more nearly match lower sensitivity values and are not linear? For instance the point made about the pause not starting until after 1998 is relevant imo, only if a linear trend is used for comparison purposes.


"The professional standards of science must impose a framework of discipline and at the same time encourage rebellion against it". – Michael Polyani (1962)
"If climate science is sound and accurate, then it should be able to respond effectively to all the points raised…." - Grandad
"The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts". - Bertrand Russell
"Science is the belief in the ignorance of the experts" – Richard Feynman
"A consensus means that everyone agrees to say collectively what no one believes individually.”- Abba Eban, Israeli diplomat
Dave,Derby
AIMSIR
15 September 2013 13:04:12


I think we should expect an increase of roughly 1.25 million this year.
This might bring arctic sea ice area into a lasting (period) of a notable positive anomaly, for the first time since 2003.

Quantum
15 September 2013 13:48:31

With a bit of luck we may even touch the former most pesimistic runs 



But im not sure if there is any great coralation between high summer minima and high winter maxima. 2012 did quite well in the spring time, even appropacing average at one point. 


Twitter: @QuantumOverlord (general), @MedicaneWatch (medicane/TC stuff)
2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

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

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
Total: 12 days with snow/sleet falling.
AIMSIR
15 September 2013 14:20:32

Originally Posted by: Quantum 


With a bit of luck we may even touch the former most pesimistic runs 



But im not sure if there is any great coralation between high summer minima and high winter maxima. 2012 did quite well in the spring time, even appropacing average at one point. 


Nine year running means are used in that graph.


It should show a big dip.

Bill Illis
16 September 2013 19:05:40

Originally Posted by: Quantum 


With a bit of luck we may even touch the former most pesimistic runs 



But im not sure if there is any great coralation between high summer minima and high winter maxima. 2012 did quite well in the spring time, even appropacing average at one point. 



 


That chart was corrected last year.  The correct one is here.


 



 

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