{"refrec":{"BRefID":247389,"RR":"<b>Rhodes, R.H.; Brook, E.J.; Chiang, J.C.H.; Blunier, T.; Maselli, O.J.; McConnell, J.R.; Romanini, D.; Severinghaus, J.P.</b> (2015). Enhanced tropical methane production in response to iceberg discharge in the North Atlantic. <i>Science (Wash.) 348(6238)</i>: 1016-1019. <a href=\"http://dx.doi.org/10.1126/science.1262005\" target=\"_blank\">http://dx.doi.org/10.1126/science.1262005</a>","BEntID":239090,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Science (Wash.) 348(6238)</i>: 1016-1019. <a href=\"http://dx.doi.org/10.1126/science.1262005\" target=\"_blank\">http://dx.doi.org/10.1126/science.1262005</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Rhodes, R.H.; Brook, E.J.; Chiang, J.C.H.; Blunier, T.; Maselli, O.J.; McConnell, J.R.; Romanini, D.; Severinghaus, J.P.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Rhodes, R.H. <i>et al.</i>","Englishabstract":"The causal mechanisms responsible for the abrupt climate changes of the Last Glacial Period remain unclear. One major difficulty is dating ice-rafted debris deposits associated with Heinrich events: Extensive iceberg influxes into the North Atlantic Ocean linked to global impacts on climate and biogeochemistry. In a new ice core record of atmospheric methane with ultrahigh temporal resolution, we find abrupt methane increases within Heinrich stadials 1, 2, 4, and 5 that, uniquely, have no counterparts in Greenland temperature proxies. Using a heuristic model of tropical rainfall distribution, we propose that Hudson Strait Heinrich events caused rainfall intensification over Southern Hemisphere land areas, thereby producing excess methane in tropical wetlands. 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