tag:blogger.com,1999:blog-4142988674703954802.post9202596991764800913..comments2024-03-11T04:54:26.827-07:00Comments on THE HOCKEY SCHTICK: New paper finds glaciers have been melting naturally at the same rate since 1850, no acceleration predictedUnknownnoreply@blogger.comBlogger2125tag:blogger.com,1999:blog-4142988674703954802.post-70806169749011768122014-11-01T21:50:02.391-07:002014-11-01T21:50:02.391-07:00http://www.psmsl.org/products/reconstructions/2008...http://www.psmsl.org/products/reconstructions/2008GL033611.pdf<br />The fastest sea level rise, estimated from the time variable trend with decadal variability removed, during the past 300 years was observed between 1920– 1950 with maximum of 2.5 mm/yr. [E]stimates of the melting glacier contribution to sea level is 4.5 cm for the period 1900 – 2000 with the largest input of 2.5 cm during 1910 – 1950 [Oerlemans et al., 2007]<br /><br />[Melting glaciers contributed to 88% more to sea level rise between 1910 and 1950 (.63 cm per decade) than for the rest of the 20th century (.33 cm per decade)].<br />-----------------------------------<br />http://journals.ametsoc.org/doi/full/10.1175/JCLI-D-12-00319.1<br />[T]here was a warm period in the Arctic and Greenland in the 1920s and 1930s (Box 2002; Johannessen et al. 2004; Kobashi et al. 2011) at a time when anthropogenic global warming was relatively small (see, e.g., Fig. 9.5 ofHegerl et al. 2007). This promoted glacier mass loss at high latitudes in the Northern Hemisphere (e.g., Oerlemans et al. 2011) at a greater rate than the global mean. Although in L the difference is not striking in general (not shown; L includes 79 glaciers north of 60°N and 24 north of 70°N), it is pronounced in Greenland. Length records included in L indicate a greater rate of glacier retreat in the first than in the second half of the twentieth century in Greenland (Leclercq et al. 2012)<br /><br />[Graph from the paper (Figure A) showing much larger glacier melt rate contributions to sea level rise in the 1920s and 1930s compared to the present:]<br /><br />http://journals.ametsoc.org/na101/home/literatum/publisher/ams/journals/content/clim/2013/15200442-26.13/jcli-d-12-00319.1/20130821/images/large/jcli-d-12-00319.1-f2.jpeg<br />Kenneth Richardhttps://www.blogger.com/profile/00198431792165032103noreply@blogger.comtag:blogger.com,1999:blog-4142988674703954802.post-68272241184580475142014-01-16T10:56:31.985-08:002014-01-16T10:56:31.985-08:00Glaciers were receding all over the world during H...Glaciers were receding all over the world during Hansen's coldest year ever<br /><br />http://trove.nla.gov.au/ndp/del/article/100784966<br /><br />https://twitter.com/SteveSGoddard/status/422207931438739456/photo/1<br />MShttps://www.blogger.com/profile/06714540297202434542noreply@blogger.com