Sentences with phrase «methane during deglaciation»
[Response: Turns out that hydrate preservation is much more sensitive to changes in temperature than it is changes in pressure, so what we might look for is release of methane during deglaciation.
http://www.realclimate.org/ Not exact matches
In a study released this fall, Petrenko analyzed methane from 12,000 years ago during the last deglaciation, when Earth was transitioning out of the last ice age.
The sharpest methane concentration increases occur during deglaciations, in phase with Greenland (NH) temperature and monsoon intensity increases.
The data rule out methane hydrates as a major contributor to (i) glacial - interglacial variations during the last deglaciation, and (ii) millennial methane increases that occur in phase with Greenland temperature abrupt events.
Light gray bars denote deglaciations (terminations), while the two dark gray bars denote the Younger Dryas and the Younger Dryas - like event during termination III (i.e., decreased atmospheric methane and East Asian Monsoon (higher δ18O).
If the probability of the coming methane bomb was reasonable, I would think many of these events would have happened during deglaciations.
However, high - resolution proxy records sensitive to AMOC strength (Chinese speleothem δ18O and atmospheric methane) document a Younger Dryas — like event during termination III (the third to the last deglaciation)(Figs. 2B and 2C; Carlson, 2008; Cheng et al., 2009).