{"id":15635,"date":"2013-04-05T15:24:43","date_gmt":"2013-04-06T01:24:43","guid":{"rendered":"http:\/\/www.hawaii.edu\/news\/?p=15635"},"modified":"2020-11-12T12:38:46","modified_gmt":"2020-11-12T22:38:46","slug":"new-study-reconciles-land-and-sea-carbon-records","status":"publish","type":"post","link":"https:\/\/www.hawaii.edu\/news\/2013\/04\/05\/new-study-reconciles-land-and-sea-carbon-records\/","title":{"rendered":"New study reconciles land and sea carbon records"},"content":{"rendered":"Reading time: <\/span> < 1<\/span> minute<\/span><\/span>
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A. Hope Jahren<\/figcaption><\/figure>\n

University of Â鶹´«Ã½<\/span> at Mānoa’s A. Hope Jahren<\/strong> and University of Louisiana at Lafayette’s<\/a> Brian Schubert have now determined how to resolve a difference in carbon cycling activity.<\/p>\n

Up until this point, researchers have puzzled over a key inconsistency in carbon records. The geologic markers for historic disruptions in carbon cycling activity\u2014recorded as carbon isotope excursions or CIE<\/abbr>\u2014tend to be much larger in terrestrial rocks than those recorded in marine rocks during the same time periods.<\/p>\n

“Our new model reconciles the differences based on the fundamentally different nature of carbon cycling on land compared to the ocean, injecting a more sophisticated view of ecology into current paleoclimatology,” said Jahren, a professor of geology and geophysics<\/a> at the University of Â鶹´«Ã½<\/span> at Mānoa.<\/p>\n

Jahren and Schubert developed their model based on research conducted while Schubert was a postdoctoral fellow at University of Â鶹´«Ã½<\/span> at Mānoa. Their work is published in an April 3 article in Nature Communications<\/em><\/a>.<\/p>\n

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University of Â鶹´«Ã½<\/span> at M\u0101noa greenhouse observations using modern plants helps explain key differences in geologic record. (photo courtesy of UH<\/abbr> M\u0101noa’s department of geology and geophysics )<\/figcaption><\/figure>\n

Using UH<\/abbr> Mānoa greenhouse space to simulate a variety of controlled climate scenarios, Schubert and Jahren identified a unifying relationship for the effect of atmospheric CO2<\/sub> on plant tissues in a wide range of carbon-fixing land plants.<\/p>\n

Their new model offers scientists a way to use terrestrial and marine records together to reconstruct the background and maximum atmospheric CO2<\/sub> levels across carbon isotope excursions. The new model also provides insight into some future climate scenarios.<\/p>\n

Read the UH<\/abbr> Mānoa news release<\/a> for more about this discovery.<\/p>\n","protected":false},"excerpt":{"rendered":"

Greenhouse observations using modern plants helps UH<\/abbr> Mānoa’s A. Hope Jahren explain key differences in geologic record.<\/p>\n","protected":false},"author":16,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[378,9],"class_list":["post-15635","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research","tag-geology-and-geophysics","tag-uh-manoa","entry","has-media"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t