I think that there needs to be a weighting of multi-year(?) sea ice melting at the core of the Arctic Basin in comparison to the any melting of (seasonal ice) at the periphery of comparable size. If the core continues to destabilise, question is why? Nuclear reactors melt at their core, same with old overgrown mushrooms - or trees. But that if the Arctic Ocean sea ice melts a hole into the middle, this would mean the periphery which will melt later in season, that very little ice could be left. Let just hope that this deepening hole near the Pole of Inaccessibility is just a temporary anomaly that would disappear and freeze over rather than get enlarged. But in any case, melting or ice disintegration at the centre of Polar Sea Ice cap must have higher rating than similar advanced melting anywhere around the ice edges. The sunshine factor of many hours from end of April to summer solstice is important. Let just hope this would be an anomaly and a sort of lead that would disappear. Rgs, Albert
Hi David, Many thanks for a good diagram! The issue at the moment is the decrease of sea ice at the very core of the ice over large area. On contrary, the Barents Sea and some other areas are holding plenty of ice, but knowing that by summer periphery melts more than the centre, it is not good-looking. But I doubt re-freeze occurring easily, there is notable darkening of sea as well. I would make the question where? rather than how much? But by summer these will be answered. At this point of time the graph contains loads of volatile seasonal ice at the periphery, by the autumn it is core built around the Arctic Basin. I have discounted the periphery ice's significance and account far more weighting to the multi-year ice on the Arctic Basin. I am finding it disturbing that the ice is destabilising at the core (the Pole of Inaccessibility) so early in the season (we just moved from April to May during the Bank Holiday weekend). Kind regards, Albert And then there is the AMSR-E data: From: j...@cloudworld.co.uk To: dwschn...@gmail.com; albert_kal...@hotmail.com CC: geoengineering@googlegroups.com; indian...@googlegroups.com; p...@cam.ac.uk; eha...@sheffield.ac.uk Subject: Re: [geo] Re: Arctic Ocean Sea Ice Shows Extensive Weakening around the Pole of Inaccessibility - Albedo Date: Tue, 5 May 2009 18:29:19 +0100 Hi Albert, Thanks for finding that picture. Where did you find it? The weakening is extremely worrying, considering the sun must still be low (<25 degrees?) at its noon elevation, north of 80 degrees latitude. I usually follow this report: http://nsidc.org/arcticseaicenews/ It is interesting to look at the temperature anomaly picture, which shows unusual cold over the Arctic. Presumably the trend of polar amplification continues by general warming of land mass and sea volume, while the air temperature fluctuates wildly. Is that right? Could it be the underlying sea temperature which is causing that weakening around the pole of inaccessibility, coupled with the sea ice being single-year perhaps? It is difficult to reconcile the weakening with a cold temperature anomaly. Could cloud cover be an important factor? When the air temperature is cold, there may be little cloud, so the sun gets through to melt the ice. Cheers, John ----- Original Message ----- From: David Schnare To: albert_kal...@hotmail.com Cc: Geoengineering FIPC ; Indianice FIPC ; Peter Wadhams ; Edward Hanna Sent: Tuesday, May 05, 2009 3:28 PM Subject: [geo] Re: Arctic Ocean Sea Ice Shows Extensive Weakening around the Pole of Inaccessibility - Albedo And then there is the AMSR-E data: [deleted] 2009/5/5 Albert Kallio <albert_kal...@hotmail.com> Further to the previous: This image with albedo, near natural light conditions suggestive of albedo-induced warming occurrence now being likely around the Pole of Inaccessibility due to early (light) season. Rgs, Albert <<arctic.seaice.bandw.003.png>> [snip] _________________________________________________________________ View your Twitter and Flickr updates from one place – Learn more! http://clk.atdmt.com/UKM/go/137984870/direct/01/ --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "geoengineering" group. To post to this group, send email to geoengineering@googlegroups.com To unsubscribe from this group, send email to geoengineering+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en -~----------~----~----~----~------~----~------~--~---
