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Using satellite observations to study photosynthetic trends in northern circumpolar high latitudes

he Center and co-author of the paper, "This work extends our previous analyses by specifically considering issues of vegetation type and density over this vast region, as well as differences in seasonality of photosynthetic gains and losses. Rather than a systematic greening of high latitudes with warmer temperature, we are seeing a more nuanced and surprisingly rapid response to changes in climate. What we'd like to know is whether these trends will continue to result in forest decline, exacerbating the impact of warming, or will the forests somehow be able to adapt? Models can tell us what is likely to occur, but we are most anxious to see what the satellite observations will reveal over the next few years."

Dr. Bunn is an ecologist interested in understanding climate change impacts on the biosphere. He is particularly interested in understanding the natural range of climate variability over the last two thousand years using natural archives of past temperature and precipitation derived from tree rings. He was awarded a Canon National Parks Science Scholarship in 2001 for work combining tree rings, remote sensing, and computer simulations of high elevation forests in Sequoia National Park. He earned a master's degree from Duke University and a doctorate from Montana State University.

Dr. Goetz works on the application of satellite imagery to analyses of environmental change, including monitoring and modeling links between land use change, forest productivity, biodiversity, climate, and human health. Before joining the Center, he was on the faculty at the University of Maryland for seven years, where he maintains an adjunct associate professor appointment, and was a research scientist at NASA's Goddard Space Flight Center. He received his Ph.D. from the University of Maryland.


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Contact: Elizabeth Braun
ebraun@whrc.org
508-540-9900
Woods Hole Research Center
17-May-2006


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