The early part of the last deglaciation is characterised by a ~40 ppm atmospheric CO2 rise occurring in two abrupt phases. The underlying mechanisms driving these increases remain a subject of intense debate. Here, we successfully reproduce changes in CO2, δ13C and Δ14C as recorded by paleo-records during Heinrich stadial 1 (HS1). We show that HS1 CO2 increase can be explained by enhanced Southern Ocean upwelling of carbon-rich Pacific deep and intermediate waters, resulting from intensified Southern Ocean convection and Southern Hemisphere (SH) westerlies.
Original Source [2]
Technology Partners: MimirTech
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/southern-hemisphere-westerlies-driver-early-deglacial-atmospheric-co2-rise
[2] https://www.nature.com/articles/s41467-018-04876-4.pdf
[3] http://admin.indiaenvironmentportal.org.in/category/author/l-menviel
[4] http://admin.indiaenvironmentportal.org.in/category/author/p-spence
[5] http://admin.indiaenvironmentportal.org.in/category/author/j-yu-et-al
[6] http://admin.indiaenvironmentportal.org.in/category/journal/nature-communications
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/green-house-gases
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/oceans-and-seas
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/north-atlantic-ocean
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/south-atlantic-ocean
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/greenland
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/global-warming
[15] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-science
