tag:blogger.com,1999:blog-1367053740188758246.post4865210866210922578..comments2023-06-21T00:39:34.443-07:00Comments on Dosbat: May 2013 Status part 1: The May StormChris Reynoldshttp://www.blogger.com/profile/16843133350978717556noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-1367053740188758246.post-74857770371137166142013-06-04T00:45:27.155-07:002013-06-04T00:45:27.155-07:00Chris, I never said it wasn't useful, just tha...Chris, I never said it wasn't useful, just that I didn't trust it all that much. <br /><br />Captcha: isoftme manner :-)Nevenhttps://www.blogger.com/profile/15413215743703093876noreply@blogger.comtag:blogger.com,1999:blog-1367053740188758246.post-35079828214671281792013-06-03T22:43:41.547-07:002013-06-03T22:43:41.547-07:00Neven,
I still think the model is very useful and...Neven,<br /><br />I still think the model is very useful and will continue to use it. As with any model being aware of the caveats is part of using the data. Actually that applies to all data.<br /><br />Crandles,<br /><br />You're probably right, and I agree that the floes are still pretty big. At 250m per pixcel, even a 250m X 250m pond covering one pixcel is a decent size melt pond.<br /><br />I don't think mechanical deformation is the issue with ponds. As I understand it's melt from the suface and resultant ice albedo feedback.Chris Reynoldshttps://www.blogger.com/profile/16843133350978717556noreply@blogger.comtag:blogger.com,1999:blog-1367053740188758246.post-87415295919670773022013-06-03T13:49:07.959-07:002013-06-03T13:49:07.959-07:00It seems to me andy's question was about abili...It seems to me andy's question was about ability to hold melt ponds.<br /><br />I would suggest the ice floes are still pretty big even if the ice is more broken up.<br /><br />How flexible is ice? Enough to curve down in the middle and up at the edges and is this effect significant for melt pond capture on large floes but not for small floes?crandleshttps://www.blogger.com/profile/15181530527401007161noreply@blogger.comtag:blogger.com,1999:blog-1367053740188758246.post-77938124178726944182013-06-03T12:34:19.440-07:002013-06-03T12:34:19.440-07:00Following...Following...Nevenhttps://www.blogger.com/profile/15413215743703093876noreply@blogger.comtag:blogger.com,1999:blog-1367053740188758246.post-42689406234287767882013-06-03T12:33:56.932-07:002013-06-03T12:33:56.932-07:00Great post, Chris. I've quoted some of it in m...Great post, Chris. I've quoted some of it in my latest article on the ASIB: <a href="http://neven1.typepad.com/blog/2013/06/new-map-on-the-block.html" rel="nofollow">New map on the block</a>.<br /><br />BTW, this is one of the reasons that I take the ACNFS forecast with a grain of salt. But to be fair, it was the 'hole' that was predicted (and your and others' discussion of it on the ASIF), that drew my attention to this event.Nevenhttps://www.blogger.com/profile/15413215743703093876noreply@blogger.comtag:blogger.com,1999:blog-1367053740188758246.post-49460750198844703832013-06-03T09:48:07.624-07:002013-06-03T09:48:07.624-07:00Forgot to add - the ice flowing down the east coas...Forgot to add - the ice flowing down the east coast of Greenland floes into the Fram Strait, between Greenland and Iceland, and is melted there. This is normal, and yes it is a major source of loss of multi year ice.Chris Reynoldshttps://www.blogger.com/profile/16843133350978717556noreply@blogger.comtag:blogger.com,1999:blog-1367053740188758246.post-47198440267867809982013-06-03T09:46:17.413-07:002013-06-03T09:46:17.413-07:00Andy,
"would an increase in ice channels dec...Andy,<br /><br />"would an increase in ice channels decrease the surface water, potentially limiting melt-albedo feedback?"<br /><br />Not sure I understand you here, but I'll try to answer anyway. :)<br /><br />Normally melt proceeds from the edges of the pack, so lateral (horizontal) melting is limited by the available ice edge.<br /><br />The pack isn't one mass of ice, as far back as I can recall it's always been a mass of fractured floes of ice, although this seems to be getting worse as the pack thins. However if there are enough broken floes with open water between them then this allows the open water to absorb sunlight and increase lateral melt. <br /><br />If you look at the second to last image in the blog (blink comparison between MODIS for different days), you can see more areas of open water after the storm than before. For similar levels of insolation during each period the pack after the storm will exhibit stronger ice albedo feedback.<br /><br />I'm a bit out of date with regards extent, it's been about two years since I followed it. But I will seriously consider such a post.Chris Reynoldshttps://www.blogger.com/profile/16843133350978717556noreply@blogger.comtag:blogger.com,1999:blog-1367053740188758246.post-90917379024119382012013-06-03T01:27:32.223-07:002013-06-03T01:27:32.223-07:00would an increase in ice channels decrease the sur...would an increase in ice channels decrease the surface water, potentially limiting melt-albedo feedback?<br /><br />also it seems to me that at some time during the period the animation covers, almost all thick ice had a velocity along the top of greenland, towards being dumped down the the coast.<br /><br />Would you be able to have a post on the different ice area/concentration/extent measures, as it seems that some ignore many small holes, others are biased, and perhaps the most useful (volume calculated from thickness) is the hardest to measure accurately and interpret correctly.<br /><br />(capture "sufficiently longspti")andy_t_roohttps://www.blogger.com/profile/02029998081457691232noreply@blogger.com