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Reply to comment by Yannick Garcin on “Abrupt change in tropical African climate linked to the bipolar seesaw over the past 55,000 years”
Author(s) -
Brown E. T.,
Johnson T. C.,
Scholz C. A.,
Cohen A. S.,
King J. W.
Publication year - 2008
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2007gl033004
Subject(s) - stadial , chronology , geology , ice core , radiocarbon dating , intertropical convergence zone , climatology , climate change , physical geography , geography , paleontology , precipitation , oceanography , holocene , meteorology
We welcome this opportunity for additional discussion of the Lake Malawi Drill Core record. We recognized early in this project that the Zr:Ti record shows a striking qualitative resemblance to records of interstadial DO events as preserved in Greenland [ Brown et al. , 2006]. However, additional radiocarbon constraints on the core's chronology, and the need for a mechanistically realistic interpretation of the record throughout MIS 2 and MIS 3 led us to the conclusion that peaks in the Malawi record (interpreted as southward ITCZ excursions) coincide with Greenland stadials [ Brown et al. , 2007]. Garcin [2008] has raised several concerns regarding our interpretation of Lake Malawi results from MIS 2 and MIS 3; these fall into five general categories: