University of Cambridge > Talks.cam > BAS Chemistry & Past Climate Seminars > New insights into past methane cycle changes from ice cores

  Browse A-Z

Log in

Googledetails Microsoftdetails

🔐 Log In

Information on

Subscribing to talksdetails Finding a talkdetails Adding a talkdetails Disseminating talksdetails Help and Documentationdetails

ℹī¸ Information

New insights into past methane cycle changes from ice cores

Download to your calendar using vCal

If you have a question about this talk, please contact Dr. Ailsa Benton .

All welcome. If external to BAS, please email the organiser in advance to gain access to the building.

Latest analytical progress in methane ice core studies in terms of temporal resolution but also in terms of the methane isotopic composition provides new insights into past changes in the global methane cycle. The use of bipolar (isotopic) methane records allows us to determine the emissions of different methane source for times of relatively stable environmental conditions such as the Holocene. For glacial/interglacial changes, however, we found that not only wetland emission strengths are changing but also the isotopic signatures of the methane sources themselves are altered considerably. While this change in source signature allows us to make inferences about previously underestimated ecosystem changes in the past, it leaves the methane budget on such long time scale still underconstrained.

This talk is part of the BAS Chemistry & Past Climate Seminars series.

This talk is included in these lists:

Note that ex-directory lists are not shown.

Other lists

Hybrid: in-person in Cambridge & online via Teams Goldsmiths 2 & https://us06web.zoom.us/j/81688365420?pwd=b3RpdHgxNVhWbWQrbXluMUxYNWVtQT09 Meeting ID: 816 8836 5420 Passcode: 047859 Average on weekdays: 9031.95812808 kWh

Other talks

Seminars in Cancer How Far Can Good Go Without God? The Limits of a Naturalistic Ethic TBC Tea and Coffee Break Group Presentation 2 Sera Markoff Inaugural Lecture for the Plumian Professorship in Astronomy and Experimental Philosophy - 'Staring into the heart of darkness: from theory to the direct imaging of black holes'
 

Š 2006-2025 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity