tag:blogger.com,1999:blog-1367053740188758246.post8431238446992669210..comments2023-06-21T00:39:34.443-07:00Comments on Dosbat: The Central Arctic Thinning: Is It Real? Chris Reynoldshttp://www.blogger.com/profile/16843133350978717556noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-1367053740188758246.post-72712450656297893552013-06-30T00:39:55.636-07:002013-06-30T00:39:55.636-07:00Kevin,
Here's a graphic that should help. The...Kevin,<br /><br />Here's a graphic that should help. The purple trace is hue adjusted DMI trace for 2012, the red trace is for 2013. Red infill indicates 2013 below 2012, blue infill indicates 2013 above 2012.<br /><br /><a href="http://farm6.staticflickr.com/5541/9173244524_5bd2869be7_o.png" rel="nofollow">LINK</a><br /><br />Month demarcations are estimated.<br /><br />There's also a table of NCEP/NCAR north of 80degN (area weighted). And difference between 2013 and 2012, following the same red/blue key as above.<br /><br />DMI uses ERA40, so will differ a bit from NCEP/NCAR and when comparing years any differences will be accentuated. There does seem to be an arguable qualitative agreement, in March there look to be equal amounts of blue and red infill, yet NCEP/NCAR shows 2013 markedly warmer. However by the same reasoning April and May seem to agree.<br /><br />PS, the cold snap in February 2013 seems to be captured OK by both reanalyses - i.e. they seem to agree, using judgement by eye.<br /><br />Is it these sort of disagreements you're referring to?Chris Reynoldshttps://www.blogger.com/profile/16843133350978717556noreply@blogger.comtag:blogger.com,1999:blog-1367053740188758246.post-513227713040959432013-06-29T19:12:39.358-07:002013-06-29T19:12:39.358-07:00Chris - I made another comment on your previous po...Chris - I made another comment on your previous post, but it didn't get through. It applies to this post as well. Go look at NCEP/NCAR for MAM 2012 compared to this year. Then try to reconcile NCEP/NCAR with DMI N80 temps.<br /><br />I still think DMI is either just flat out wrong or telling us a story we don't yet understand.Kevin O'Neillhttps://www.blogger.com/profile/06692943768484857724noreply@blogger.com