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Arctic Seminar Series: Penny Vlahos

Air/Sea Gas Exchange in Polar Regions - NEW TIME AT 11.00!

2016.02.12 | Susanna Pakkasmaa

Date Mon 20 Jun
Time 11:00 12:00
Location ARC, Ny Munkegade 114, Building 1540, meeting room 1540-020. Roskilde: conference room I0.19.

Penny Vlahos. Photo UConn Today.

The movement of gases between the ocean and atmosphere is a critical part of climate feedbacks. Our existing exchange models are based on empirical algorithms that are tuned to a narrow set of gases. Field studies have shown that at high wind speeds, over 10 m/s, there is a divergence of gas exchange fluxes predicted from algorithms based on carbon dioxide. This may lead to large scale inaccuracies in global climate models.

High wind speeds, particularly over the broad southern ocean may dominate air/sea gas exchange and should be accurately studied to improve our current state of dynamic air/sea coupled models.

Also, as the role of a broader set of gases, particularly biogenic gases are investigated, there is a need for air/sea gas exchange models that are more robust and address the specific physical chemistry of these gases.

Here we will discuss the progress in introducing physical chemistry into these models and the specific implications for Polar Regions.

 

Associate Professor Penny Vlahos's research group works with geochemistry of carbon and nitrogen, particularly in understanding and identifying the processes that control the global cycling of carbon (with an emphasis on organic carbon). The cycling of carbon on our planet is of critical importance to the biosphere, our climate and is directly related to the cycling of other elements. An important subset of this pool is anthropogenic organic compounds that may persist in the environment.

Read more about Penny Vlahos's research at ResearchGate.

Arctic Research Centre
Tags: Arctic Seminar Series