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Filtering by: Creator Montzka, S. Committee Member Mix, Alan

Interpreting Climate of the Past from High-Resolution Ice Core Records of Methane

Creator:

Lee, James E.

Abstract:

Methane is a product of biogeochemical processes which respond to changes in climate. The history of atmospheric methane is recorded by ice cores providing insight into past changes in these biogeochemical processes. This dissertation is comprised of three studies which focus on centennial- and millenial-scale variability of methane from ice...

Resource Type:

Dissertation

Full Text:

Schmitt helped develop the concept of this work. Jon S. Ed- wards helped develop the measurement
Stable Isotope Constraints on Carbon Dioxide and Nitrous Oxide Variations at the Onset of the Last Glacial Period: New Ice Cores from Taylor Glacier, Antarctica

Creator:

Menking, James A.

Abstract:

New ice cores retrieved from the Taylor Glacier (Antarctica) blue ice area contain ice and air spanning the Marine Isotope Stage (MIS) 5/4 transition, a period of global cooling and ice sheet expansion. Chronologies were determined for the ice and air bubbles in the new ice cores by visually matching...

Resource Type:

Dissertation

Full Text:

atmospheric greenhouse gas concentrations only extend back to the late 1950’s for carbon dioxide (CO2) and