tag:blogger.com,1999:blog-1367053740188758246.post1779982173122477068..comments2023-06-21T00:39:34.443-07:00Comments on Dosbat: Er, I really can't think of title for this one.Chris Reynoldshttp://www.blogger.com/profile/16843133350978717556noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-1367053740188758246.post-73493460803755849992012-09-05T10:59:03.821-07:002012-09-05T10:59:03.821-07:00Hi Kevin,
Quite a coincidence!
Trust two enginee...Hi Kevin,<br /><br />Quite a coincidence!<br /><br />Trust two engineers to get the significance of the change in PIOMAS seasonal cycle!<br /><br />If it hadn't have been for the MN, I'd have assumed you worked here in the UK. I've been working on telecomms for most of my career and took a pay cut to calibration - because a 9 to 5 job suited this hobby better.<br /><br />When you sit back and think about it, it's quite a privilege to be able to sit in the comfort of your home and use the staggeringly advanced technology at our disposal to watch it all unfold.<br /><br />As you work in calibration - I assume that like me you're in awe at ICESat and Cryosat 2's achievements. Measruing the thickness of somethings a few meters thick from miles up in space.<br /><br />Staggering.<br /><br />I'm reminded of Clarke's third law:<br />"Any sufficiently advanced technology is indistinguishable from magic."Chris Reynoldshttps://www.blogger.com/profile/16843133350978717556noreply@blogger.comtag:blogger.com,1999:blog-1367053740188758246.post-7300885059333790052012-09-05T10:00:31.587-07:002012-09-05T10:00:31.587-07:00Chris - how is it possible we both work in calibra...Chris - how is it possible we both work in calibration labs and it hasn't come up before now?<br /><br />LOL<br /><br />I've been working on nothing but measurement uncertainty budgets for months now; I actually get to go out and be a technician again for a whole week at the end of September - a little jaunt over to IBM in Rochester, MN to do some work.<br /><br />As far as the sea ice - I'm with you on the attitude that if we're going to have a RILE, then at least I get to watch the show.Kevin O'Neillhttps://www.blogger.com/profile/06692943768484857724noreply@blogger.comtag:blogger.com,1999:blog-1367053740188758246.post-92191076175367435102012-09-05T09:06:51.168-07:002012-09-05T09:06:51.168-07:00Hi Dan,
Thanks for the comment, but I'm sure ...Hi Dan,<br /><br />Thanks for the comment, but I'm sure of my figures. They're not IJIS, they're Cryosphere Today area (CT area). You can check them here:<br />http://arctic.atmos.uiuc.edu/cryosphere/timeseries.anom.1979-2008<br /><br />2006 4.0169191 min<br />2007 2.9194391 min<br />% drop -27.321%<br /><br />2011 2.9047396 min<br />2012 2.3722196 day 246<br />% drop -18.334%<br /><br />Figure M km^2.<br /><br />As is usual for this time of year, the latest figures, day 247, show a slight uptick; 2.3765626.<br /><br />I've given up trying to figure out how low it will go now.<br /><br />Hi Charles,<br /><br />Thanks for the comment, that early snow doesn't cover sea ice could also be seen a a negative feedback. Ice grows mainly due to accretion on the base due to heat flux from the relatively warmer ocean to the frigid conditions above the ice. Snow acts as an insulator reducing this heat flux, thus reducing accretion. <br /><br />I'm constantly befuddled by the complex interplay of feedbacks on Arctic sea-ice. But the basic message is now quite clear, the net feedback is strongly positive.<br /><br />I don't envy you Greenland. I work in a calibration lab (electronics too), temperature and humidity controlled 24 hours a day, 365 days a year. <br />Chris Reynoldshttps://www.blogger.com/profile/16843133350978717556noreply@blogger.comtag:blogger.com,1999:blog-1367053740188758246.post-34342159156343084952012-09-05T05:10:37.093-07:002012-09-05T05:10:37.093-07:00Chris,
I am an electrical engineer not a climate ...Chris,<br /><br />I am an electrical engineer not a climate scientist but I did spend a year in Greenland and can tell you it does not snow in the winter - it is to cold. I believe this may be providing additional positive feedback for melting.<br /><br />When it does snow (spring and fall) especially in the fall, the ice is not there as it now freezes later, so the snow falls in open water and thus isn't there to protect the ice when ice melt starts in the spring.<br /><br />I don't know the total forcing of this but it seems to me that it could be an unfortunate further amplification of melting<br /><br />Charles Bayless<br />Ceb1618@aol.comCharles Baylessnoreply@blogger.comtag:blogger.com,1999:blog-1367053740188758246.post-68448271267871647122012-09-04T17:26:18.421-07:002012-09-04T17:26:18.421-07:00Great and thought-provoking series of posts, Chris...Great and thought-provoking series of posts, Chris. One little correction:<br />"[CT area is] still dropping precipitously now at 3.722M km^2, 0.533M km^2 below the previous record set last year. That's a staggering -18% from the last record. Not as large as the loss between 2006 and 2007, which was -27%, but still massive."<br /><br />I believe you're actually quoting IJIS extent #'s but CT % drops: <br />Today: 2.372m km^2<br />2007/2011 shared record: 2.92m, so -19%<br /><br />2006-2007: 4.02m to 2.92m, so -27%dan pnoreply@blogger.com