tag:blogger.com,1999:blog-28837843.post1561340271116431630..comments2024-03-19T07:10:27.303-07:00Comments on Quark Soup by David Appell: That Sharp Dip in Arctic Sea Ice Extent....David Appellhttp://www.blogger.com/profile/03318269033139447591noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-28837843.post-24021401332660098762012-05-14T14:54:58.168-07:002012-05-14T14:54:58.168-07:00I've been watching weekly CO2 soar at Mauna Lo...I've been watching weekly CO2 soar at Mauna Loa, the latest value puts it more than 4pmm higher than this time last year.<br />http://www.esrl.noaa.gov/gmd/ccgg/trends/weekly.html<br /><br />It does say the data is preliminary though so that may be the reason and the jump will be reduced.<br /><br />If not though I checked the full weekly record and since May 1974 there are only 5 weekly readings on record that were more than 4ppm higher than the preceding year:<br /><br />August 16th 1998: 4.16ppm higher<br />September 6th 1998: 4.67ppm higher<br />September 27th 1998: 4.49ppm higher<br />April 18th 2010: 4.14ppm higher<br />May 6th 2012: 4.12ppm higher<br /><br />If the May 6th 2012 figure holds the remarkable thing will be that the other >4ppm jumps were largely helped that high by El Ninos but this one in 2012 will have happened in spite of one.<br /><br />Perhaps we are seeing the jump in global emissions start to have an effect.<br /><br />I expect when global temperature takes it's next jump upwards, the rate of annual CO2 rise will also jump upwards. Very strong relationship. Something to "look forward" too. One day 3ppm/year will become the norm.Nnoreply@blogger.com