"Glacial terminations" refers to the end of a period of glacial, or icy, conditions. It signifies when a long-lasting ice age or ice period comes to a close and the ice begins to melt.
Full definition
Rates of CO2 rise during 1970 - 2003 exceeded those of the last
glacial termination by two orders of magnitude.
«The lags of CO2 with respect to the Antarctic temperature over
glacial terminations V to VII are 800, 1600, and 2800 years, respectively, which are consistent with earlier observations during the last four glacial cycles.»
But the calculations can only be done well when the temperature change is large, notably
at glacial terminations (the gradual change from cold glacial climate to warm interglacial climate).
Does this process run freely, or is it synchronized to some other forcing — like Huybers & Wunsch propose for ice ages in «Obliquity pacing of the late
Pleistocene glacial terminations»?
TTanganyika temperatures follow Northern Hemisphere insolation and indicate that warming in tropical southeast Africa during the last
glacial termination began to increase 3000 years before atmospheric carbon dioxide concentrations.
Publication: Antarctic ice shield discharge driven by atmosphere - ocean feedbacks at the
Last Glacial Termination, DOI: 10.1038 / srep39979
Evidence for Obliquity Forcing
of Glacial Termination II, R. N. Drysdale et al., 09/2009, Science, Volume 325, Issue 5947, pp. 1527 - 1531
Variations in the methane interpolar gradient during the last
glacial termination.
Glacial terminations are indicated using Roman numerals in subscript (for example TVIII); MIS denotes Marine Isotope Stage27.
Glacial terminations are indicated using Roman numerals in subscript (for example TI); Marine Isotope Stages (MIS) are given in italic Arabic numerals27.
You are referring to meltwater pulses 1a and 1b, during the last
glacial termination.
According to Petit et al. [2] the same sequence of events in
each glacial termination involved «orbital forcing (with a possible contribution of local insolation changes) followed by two strong amplifiers, greenhouse gases acting first, then deglaciation and ice - albedo feedback».
Menviel, L., Timmermann, A., Elison Timm, O. & Mouchet, A. Deconstructing the Last
Glacial Termination: the role of millennial and orbital - scale forcings.