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Two chemistry postdocs win NOAA Climate and Global Change Fellowships

Delphine Farmer
Delphine Farmer admires the view of the Thames River from the London Eye ferris wheel

June 25, 2007 — by Michael Barnes, Principal Editor

Timothy H. Bertram and Delphine Farmer, both postdocs in the research group of Ron Cohen, have won National Oceanic and Atmospheric Administration (NOAA)Climate and Global Change Postdoctoral Fellowships.

This program pairs recently-graduated postdocs with host scientists at U.S. institutions to work in an area of mutual interest. The objective is to help create the next generation of researchers needed for climate studies.

Both Bertram and Farmer study the exchange between the biosphere and atmosphere of various reactive gases composed of nitrogen and oxygen.

Bertram's research focuses on the direct measurement of reactive nitrogen gases from satellite, airplane, and land instruments. These nitrogen gases exert control over the production of both ozone in the upper atmosphere and biogenic aerosols (particulates). Bertram's observations provide insights on the convective recycling of the upper troposphere and the emission of reactive nitrogen gases from soils.

Tim Bertran & friend
Tim Bertram and friend pose at the harbor in Seward, AK

Farmer is interested in how forest ecosystems interact with the atmosphere and exchange nitrogen. In the last few decades, human activity has led to dramatic increases in atmospheric nitrogen and thus nitrogen deposition into forest ecosystems. As nitrogen is often a limiting nutrient, these increases have far-reaching consequences on forest health, water quality, air quality, the carbon cycle and global climate change.

Farmer has already moved to the University of Colorado, Boulder, where she is working with Jose-Luis Jimenez. Bertram begins his postdoc this October in Seattle with Tom Ackerman and Joel Thornton of the University of Washington's Joint Institute for the Study of the Atmosphere and Ocean.

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