tag:blogger.com,1999:blog-2313427464944392482.post3032508165208279522..comments2024-03-25T05:30:23.847+11:00Comments on HotWhopper: Geothermal flux, West Antarctica and deniers at WUWTSouhttp://www.blogger.com/profile/08818999735123752034noreply@blogger.comBlogger10125tag:blogger.com,1999:blog-2313427464944392482.post-92034620976766083952014-06-11T20:41:40.302+10:002014-06-11T20:41:40.302+10:00HINT the comment was from someones cat
JB HINT the comment was from someones cat <br />JB Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-82339865952913243732014-06-11T20:00:19.403+10:002014-06-11T20:00:19.403+10:00The paper’s upshot is:
We estimate a minimum avera...The paper’s upshot is:<br />We estimate a minimum average geothermal flux value of about 114 mW/m^2 with a notional uncertainty of about 10 mW/m^2 for the Thwaites Glacier catchment with areas exceeding 200 mW/m^2 (Fig. 3). These values are likely underestimates due to the low uni-form geothermal flux value used in the ice sheet model (9) and the compensating effect of enhanced vertical advection of cold shallow ice in high-melt areas….<br />Alright, let’s do some basic physics. Let’s assume, for the sake of argument, geothermal flux of 200 mW/m^2 over the entire Thwaites catchment, and also that all of that heat goes into melting the overlying ice (as opposed to, say, heating it to the melting point). The Thwaites catchment has an area of ~189,000 km^2. Water ice has a heat of fusion of 333.55 kJ/kg. A 200 mW (=0.2 J/s) flux is 6.3 MJ/yr (0.2*3600*24*365). That flux will, thus, melt 18.9 kg of ice/yr. Since the flux is distributed over a m^2, the melt rate will be 18.9 kg/m^2/yr, or 3.6 Gt/yr for the entire catchment.<br /><br />The actual melt rate for the Thwaites, exclusive of calving, is ~70 Gt/yr (Depoorter et al, doi:10.1038/nature12567, http://www.staff.science.uu.nl/~lenae101/pubs/Depoorter2013.pdf , at Fig. 1).<br /><br />So, even assuming a geothermal flux almost 2x that in Schroeder, and that all of it melts ice, geothermal flux contributes, at most, 3.6/70=5.1% of Thwaites’s meltwater, and probably much less.<br /><br />- See more at: http://www.realclimate.org/index.php/archives/2014/06/unforced-variations-june-2014/comment-page-4/#comment-550983john byattnoreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-18247948018731079312014-06-11T19:05:45.283+10:002014-06-11T19:05:45.283+10:00from the Judith Curry thread about the Antarctic g...from the Judith Curry thread about the Antarctic glacier, from stefanthedenier : <br />"CO2&H20 molecules NEVER go into the stratosphere!!! Troposphere is as far up as there is oxygen&nitrogen, which is up to 27km; CO2&H2O go up to 10km max, but most of them are at about 4-8km altitude (that’s why aircraft go higher, to avoid clouds"<br />Wow. I ... wow. <br />bratislanoreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-53217295391315214232014-06-11T02:55:11.240+10:002014-06-11T02:55:11.240+10:00Hi Sou,
You don't seem have mentioned the lat...Hi Sou,<br /><br />You don't seem have mentioned the latest WUWT Arctic sea ice prediction post as yet, so this seems like a suitable icy repository. What's up with this recently "snipped" comment of mine?<br /><br />https://twitter.com/jim_hunt/statuses/476405196570886144Jim Hunthttp://econnexus.org/blognoreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-68610737386420860342014-06-11T00:58:22.623+10:002014-06-11T00:58:22.623+10:00Surprise, surprise, the first comment I've see...Surprise, surprise, the first comment I've seen on the weather forum which I use was, "West Antarctic glacier being melted by magma not GW", proving some have slipped the net and escaped from WUWT.<br /><br />On another matter I've been doing some research on the global affects of the Tambora eruption and unfortunately came across an old article at WUWT by 'wandering ' Willie on the summer of 1816. I have to say it hasn't been my privilege to read so much garbage for many a year. Knockernoreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-2361369150445593552014-06-10T23:49:06.135+10:002014-06-10T23:49:06.135+10:00latecommer2014 seems to believe $100k is a lot of ...latecommer2014 seems to believe $100k is a lot of money -- after overheads it would pay a student for a year, plus equipment and travel, with maybe a bit left over for summer funding.numerobisnoreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-91224969831199061952014-06-10T19:59:51.502+10:002014-06-10T19:59:51.502+10:00Judith Curry also weighs in on this, and rather di...Judith Curry also weighs in on this, and rather disappointingly implies that it's geothermal which is responsible, without pointing out that there's no evidence that geothermal is either very significant, or that it's changed with time.<br /><br /><i>”Climate models don’t simulate correctly the ocean heat transport and its variations, and they certainly don’t simulate geothermal heat sources”.</i><br /><br />http://judithcurry.com/2014/06/09/asymmetric-responses-of-arctic-and-antarctic/#comment-591690<br /><br />The numerology of the post before, though is really quite special. Even Judith's commentators find it hard to stomach, a very high bar indeed.<br /><br />Dumb:<i>"I come to this avenue of research unencumbered by any formal education in climate science or meteorology... "</i><br /><br />...and dumber <i>"...Being unencumbered by such education means that I have a whole lot less to un-learn"</i><br /><br />http://judithcurry.com/2014/06/09/climate-data-and-financial-data-part-i/<br />verytallguynoreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-88980160532749972162014-06-10T19:30:53.455+10:002014-06-10T19:30:53.455+10:00on second thoughts, I was unfair and wrong. If a d...on second thoughts, I was unfair and wrong. If a dyke system is appearing right under the target, geothermal fluxes may change significantly in 50 years in most cases. <br /><br />I don't expect Mr Watts to enlighten me about that possibility, though. <br />bratislanoreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-21781110230328833392014-06-10T18:45:24.784+10:002014-06-10T18:45:24.784+10:00forgot this gem in the comment : "trip to sun...forgot this gem in the comment : "trip to sunny Antarctica during dark northen winters". <br />Monthly mean at McMurdo in January is -3°C. With winds able to make equipment fly around. Such nice working conditions ....<br /><br />A**hole. bratislanoreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-90643030689631739492014-06-10T18:41:34.829+10:002014-06-10T18:41:34.829+10:00Mmmh. Should I risk an immediate snipping and bann...Mmmh. Should I risk an immediate snipping and banning with a simple reminder on WUWT : geothermal flux do not appear overnight, or even in 50 years ? (well, except when a volcano erupts right under the ice, but that kind of events is not exactly what I would call "barely visible")<br /><br />Maybe I should invest in TOR just for this case. bratislanoreply@blogger.com