tacoman25 Posted September 27, 2014 Share Posted September 27, 2014 Some big gains in northern Asia over the past few days, and it looks like these could continue to grow quite a bit over the next week. Link to comment Share on other sites More sharing options...
CAD_Wedge_NC Posted September 29, 2014 Share Posted September 29, 2014 Some big gains in northern Asia over the past few days, and it looks like these could continue to grow quite a bit over the next week. 2014269.png And so it begins... off to a good start. Link to comment Share on other sites More sharing options...
HailMan06 Posted September 29, 2014 Share Posted September 29, 2014 Keep it coming. Link to comment Share on other sites More sharing options...
The_Global_Warmer Posted September 29, 2014 Share Posted September 29, 2014 Gives a great reason to avoid the global temp thread like the plague. It will be impressive if the snow in the valley survives this week. Link to comment Share on other sites More sharing options...
LithiaWx Posted September 29, 2014 Share Posted September 29, 2014 Lots of positive snow anomalies. Winter is coming. Link to comment Share on other sites More sharing options...
tacoman25 Posted October 8, 2014 Author Share Posted October 8, 2014 Other than the areas bordering the Bering, NH snow cover is doing quite well so far. Should see massive growth over the next week as well, especially in Asia. Link to comment Share on other sites More sharing options...
ORH_wxman Posted October 9, 2014 Share Posted October 9, 2014 September ended up with the 3rd highest snow cover on record behind 1972 and 1977. Link to comment Share on other sites More sharing options...
stadiumwave Posted October 9, 2014 Share Posted October 9, 2014 September ended up with the 3rd highest snow cover on record behind 1972 and 1977. Impressive!! N. America has much greater cover than last year at this point. Sure pulling for Siberia to explode with snowcover this month. Link to comment Share on other sites More sharing options...
bluewave Posted October 9, 2014 Share Posted October 9, 2014 New North American snowcover record for September associated with one of the strongest polar vortices in NE Canada during September. Link to comment Share on other sites More sharing options...
Jonger Posted October 9, 2014 Share Posted October 9, 2014 September ended up with the 3rd highest snow cover on record behind 1972 and 1977. That's quite impressive. Link to comment Share on other sites More sharing options...
LithiaWx Posted October 9, 2014 Share Posted October 9, 2014 September ended up with the 3rd highest snow cover on record behind 1972 and 1977. New North American snowcover record for September associated with one of the strongest polar vortices in NE Canada during September. Screen shot 2014-10-09 at 10.38.32 AM.png Why are these two graphs different with the same data headers? Link to comment Share on other sites More sharing options...
Jonger Posted October 9, 2014 Share Posted October 9, 2014 Why are these two graphs different with the same data headers? Northern hemisphere vs. North America. Link to comment Share on other sites More sharing options...
LithiaWx Posted October 9, 2014 Share Posted October 9, 2014 Northern hemisphere vs. North America. Ah thank you. Link to comment Share on other sites More sharing options...
LithiaWx Posted October 10, 2014 Share Posted October 10, 2014 It doesn't get much more epic than this. It could possibly alter weather patterns would be my guess. Link to comment Share on other sites More sharing options...
ORH_wxman Posted October 10, 2014 Share Posted October 10, 2014 We actually has some huge gains on the Eurasian side of Siberia the past 2 days. Way above normal now in that region. I wonder if that will end up being too much too early for the SAI. Link to comment Share on other sites More sharing options...
LithiaWx Posted October 10, 2014 Share Posted October 10, 2014 We actually has some huge gains on the Eurasian side of Siberia the past 2 days. Way above normal now in that region. I wonder if that will end up being too much too early for the SAI. There seems to be a pretty strong connection from reading the "and so it begins" thread. Is there any research regarding North American snowcover and weather patterns? Intuitively it would seem there has to be some connection on this side of the globe too. Link to comment Share on other sites More sharing options...
ORH_wxman Posted October 10, 2014 Share Posted October 10, 2014 There seems to be a pretty strong connection from reading the "and so it begins" thread. Is there any research regarding North American snowcover and weather patterns? Intuitively it would seem there has to be some connection on this side of the globe too. North America snow cover anomalies tend to exacerbate their forcing the strongest on the European winter especially the northern half of Europe. The correlation between high autumn snow cover in North America and a warm winter in Europe is pretty robust. The warmth is most pronounced in early winter from this relationship. The idea behind this is that the icelandic low gets displaced to the east a bit and floods Europe with maritime airmasses. North America itself tends to be colder than usual (again esp in the first half of the winter) with high autumn snow cover but the relationship is weaker than the European effects...and it is less than our correlation with Siberian snow cover in autumn. The interesting part is that Europe also is correlated decently to the Siberian snow cover...so it could be interesting if both regions are high this autumn. Siberia is a larger domain so I think that one would dominate. Link to comment Share on other sites More sharing options...
LithiaWx Posted October 10, 2014 Share Posted October 10, 2014 Above normal snow abound. Link to comment Share on other sites More sharing options...
LithiaWx Posted October 10, 2014 Share Posted October 10, 2014 North America snow cover anomalies tend to exacerbate their forcing the strongest on the European winter especially the northern half of Europe. The correlation between high autumn snow cover in North America and a warm winter in Europe is pretty robust. The warmth is most pronounced in early winter from this relationship. The idea behind this is that the icelandic low gets displaced to the east a bit and floods Europe with maritime airmasses. North America itself tends to be colder than usual (again esp in the first half of the winter) with high autumn snow cover but the relationship is weaker than the European effects...and it is less than our correlation with Siberian snow cover in autumn. The interesting part is that Europe also is correlated decently to the Siberian snow cover...so it could be interesting if both regions are high this autumn. Siberia is a larger domain so I think that one would dominate. Thank you Link to comment Share on other sites More sharing options...
LithiaWx Posted October 14, 2014 Share Posted October 14, 2014 Snow growth Negative anomalies shrink - positive ones explode Link to comment Share on other sites More sharing options...
chubbs Posted October 14, 2014 Share Posted October 14, 2014 Interesting how 2014 is behaving like 2013 in terms of early expansion of Eurasia snowcover Link to comment Share on other sites More sharing options...
tacoman25 Posted October 15, 2014 Author Share Posted October 15, 2014 After a very high Sep, its looking likely Oct will have well above average snow cover as well. Link to comment Share on other sites More sharing options...
LithiaWx Posted October 15, 2014 Share Posted October 15, 2014 Positive snow anomalies continue to blossom : Link to comment Share on other sites More sharing options...
tacoman25 Posted October 22, 2014 Author Share Posted October 22, 2014 Data isn't updating right now, but snow cover anomalies are going to be off the charts for Asia/Eurasia for October. NH overall should rank quite high, though low snow cover recently in North America may prevent it from being record-breaking. Link to comment Share on other sites More sharing options...
nflwxman Posted October 22, 2014 Share Posted October 22, 2014 Data isn't updating right now, but snow cover anomalies are going to be off the charts for Asia/Eurasia for October. NH overall should rank quite high, though low snow cover recently in North America may prevent it from being record-breaking. Siberia snow cover is good news down this way. Has there been any long term trend in Siberia during fall? Link to comment Share on other sites More sharing options...
AvantHiatus Posted October 22, 2014 Share Posted October 22, 2014 Siberia snow cover is good news down this way. Has there been any long term trend in Siberia during fall? I think 2000-2010 was their snowiest decade. It's trending upward due to a negative feedback caused by AGW. Link to comment Share on other sites More sharing options...
StudentOfClimatology Posted October 22, 2014 Share Posted October 22, 2014 I think 2000-2010 was their snowiest decade. It's trending upward due to a negative feedback caused by AGW. I don't think it's related to AGW in this case. Most likely explanation is temporary natural variation. Link to comment Share on other sites More sharing options...
AvantHiatus Posted October 22, 2014 Share Posted October 22, 2014 I don't think it's related to AGW in this case. Most likely explanation is temporary natural variation. Not enough evidence for either argument thus far. Timescales are fairly short, seems to be a reoccurring problem when drawing conclusions in this field of study. Link to comment Share on other sites More sharing options...
StudentOfClimatology Posted October 22, 2014 Share Posted October 22, 2014 Not enough evidence for either argument thus far. Timescales are fairly short, seems to be a reoccurring problem when drawing conclusions in this field of study. There's plenty of evidence for natural fluctuations in avg snowcover up there, both via statistics and proxies. There's no quantitative evidence that AGW is the cause of the recent snowcover anomalies. Link to comment Share on other sites More sharing options...
AvantHiatus Posted October 22, 2014 Share Posted October 22, 2014 There's plenty of evidence for natural fluctuations in avg snowcover up there, both via statistics and proxies. There's no quantitative evidence that AGW is the cause of the recent snowcover anomalies. How can you use historical analogs when the atmospheric content and associated interplay was different? Link to comment Share on other sites More sharing options...
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