tag:blogger.com,1999:blog-1367053740188758246.post7226991432766330337..comments2023-06-21T00:39:34.443-07:00Comments on Dosbat: 2014 Melt Season ReviewChris Reynoldshttp://www.blogger.com/profile/16843133350978717556noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-1367053740188758246.post-26618808951517856402014-09-03T10:05:26.086-07:002014-09-03T10:05:26.086-07:00Hi Giovanni,
I don't really follow JAXA, but ...Hi Giovanni,<br /><br />I don't really follow JAXA, but don't think they have regional numbers.<br /><br />There are a few of us connected to the Sea Ice Forum and Neven's Sea Ice blog who work with gridded data. I've done regional breakdowns of PIOMAS volume, Wipneus has done the work on NSIDC concentration to produce regional area and extent. Both of us use the Cryosphere Today regions, not the MASIE regions.<br /><br />You can find the Wipneus dataset linked to in the first paragraph of this post. My breakdown of PIOMAS volume is available from the top right-side panel under Sea Ice Data, it's regional PIOMAS Data. <br /><br />The Wipneus area and extent data is in the files:<br />nsidc_nt_final_detail.txt.gz<br />and <br />nsidc_nt_nrt_detail.txt<br /><br />'final' is the finalised data, covering most of the series from 1979, it's big so it's zipped. 'nrt' is the provisional data, which currently runs from 1 Jan 2014 to the most recent date Wipneus has processed.<br /><br />Neven's Blog.<br />http://neven1.typepad.com/<br />Sea Ice Forum.<br />http://forum.arctic-sea-ice.net/index.phpChris Reynoldshttps://www.blogger.com/profile/16843133350978717556noreply@blogger.comtag:blogger.com,1999:blog-1367053740188758246.post-53769036325430565702014-09-02T10:21:47.169-07:002014-09-02T10:21:47.169-07:00Hello Chris, very thorough analysis. Thanks for po...Hello Chris, very thorough analysis. Thanks for posting! I'm looking for JAXA's regional extent numbers, to run some correlation. Do you know where they can be downloaded from?Giovanni Cirianihttps://www.blogger.com/profile/14699613390034881999noreply@blogger.comtag:blogger.com,1999:blog-1367053740188758246.post-54047604075586864022014-09-02T09:21:10.389-07:002014-09-02T09:21:10.389-07:00I'll address the NAO over at Neven's since...I'll address the NAO over at Neven's since the comment was posted there.Chris Reynoldshttps://www.blogger.com/profile/16843133350978717556noreply@blogger.comtag:blogger.com,1999:blog-1367053740188758246.post-23814303792731608272014-09-02T09:17:18.498-07:002014-09-02T09:17:18.498-07:00Sorry Iceman, but the compactness issue remains a ...Sorry Iceman, but the compactness issue remains a puzzle to me. Colder temperatures likely play a role, and as figs 7 & 8 show, almost all the action in Arctic ocean compactness was due to the Central Arctic region.<br /><br />I'm glad you found the anomaly decompositions useful, I did too. I can't believe I didn't use this method earlier. I'll have another look at that metric over the weekend. My earlier suspicion (around June/ early July) was that it was the central placing of the high pressure that played a role through keeping cool air in place and blocking out warm intrusions. But I need to have another look at that idea.Chris Reynoldshttps://www.blogger.com/profile/16843133350978717556noreply@blogger.comtag:blogger.com,1999:blog-1367053740188758246.post-54046395027407665402014-09-02T08:27:08.595-07:002014-09-02T08:27:08.595-07:00The regional decompositions are instructive, and t...The regional decompositions are instructive, and thanks in particular for highlighting the bump in compactness in the Central Arctic. This is one of the main puzzles of the melt season. I suppose it is related to the moderate pressure gradients. What about the NAO, per John Christensen's comment on ASIF in response to your blog post? Is the temperature inversion and attendant fog, which others have noted, part of the same causal chain?<br /><br /> While the main tent is getting ready to pull up stakes, there remain some entertaining and maybe noteworthy side shows. The CAA seems to have stalled recently but is likely to have a few more substantial drops. And I'm wondering whether that chunk of thicker ice in the southern ESS will detach with shifting pressure systems over the next several days.icemannoreply@blogger.com