Atmospheric methane variability: Centennial-scale signals in the Last Glacial Period
نویسندگان
چکیده
منابع مشابه
Martian Glacial Melt and Atmospheric Methane
Despite conditions on Mars favoring cold-based glaciers, there is also evidence of wetbased glaciers. We compare potential sources of basal water, and conclude that several melt mechanisms are possible. Gas hydrate clathrates within glacial ice can cause melting point depression, and are an intriguing possibility because the dissociation of clathrates releases a large quantity of energy in addi...
متن کاملTiming of millennial-scale climate change in Antarctica and Greenland during the last glacial period.
A precise relative chronology for Greenland and West Antarctic paleotemperature is extended to 90,000 years ago, based on correlation of atmospheric methane records from the Greenland Ice Sheet Project 2 and Byrd ice cores. Over this period, the onset of seven major millennial-scale warmings in Antarctica preceded the onset of Greenland warmings by 1500 to 3000 years. In general, Antarctic temp...
متن کاملAtmospheric CO2 concentrations over the last glacial termination.
A record of atmospheric carbon dioxide (CO2) concentration during the transition from the Last Glacial Maximum to the Holocene, obtained from the Dome Concordia, Antarctica, ice core, reveals that an increase of 76 parts per million by volume occurred over a period of 6000 years in four clearly distinguishable intervals. The close correlation between CO2 concentration and Antarctic temperature ...
متن کاملMechanisms of Abrupt Climate Change of the Last Glacial Period
[1] More than a decade ago, ice core records from Greenland revealed that the last glacial period was characterized by abrupt climate changes that recurred on millennial time scales. Since their discovery, there has been a large effort to determine whether these climate events were a global phenomenon or were just confined to the North Atlantic region and also to reveal the mechanisms that were...
متن کاملThomas Blunier , Period Antarctica and Greenland During the Last Glacial Timing of Millennial - Scale Climate
http://www.sciencemag.org/cgi/content/full/291/5501/109 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/291/5501/109/DC1 can be found at: Supporting Online Material found at: can be related to this article A list of selected additional articles on the Science Web sites http://w...
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ژورنال
عنوان ژورنال: Global Biogeochemical Cycles
سال: 2017
ISSN: 0886-6236
DOI: 10.1002/2016gb005570