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A Multiscale and Multidisciplinary Investigation Of Ecosystem–Atmosphere CO2 Exchange Over the Rocky Mountains of Colorado

Jielun Sun
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Steven P. Oncley
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Sean P. Burns
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Britton B. Stephens
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Donald H. Lenschow
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Teresa Campos
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Russell K. Monson
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David S. Schimel
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William J. Sacks
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Stephan F. J. De Wekker
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Chun-Ta Lai
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Brian Lamb
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Dennis Ojima
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Patrick Z. Ellsworth
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Leonel S. L. Sternberg
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Sharon Zhong
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Craig Clements
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David J. P. Moore
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Dean E. Anderson
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Andrew S. Watt
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Jia Hu
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Mark Tschudi
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Steven Aulenbach
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Eugene Allwine
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Teresa Coons
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A significant fraction of Earth consists of mountainous terrain. However, the question of how to monitor the surface–atmosphere carbon exchange over complex terrain has not been fully explored. This article reports on studies by a team of investigators from U.S. universities and research institutes who carried out a multiscale and multidisciplinary field and modeling investigation of the CO2 exchange between ecosystems and the atmosphere and of CO2 transport over complex mountainous terrain in the Rocky Mountain region of Colorado. The goals of the field campaign, which included ground and airborne in situ and remote-sensing measurements, were to characterize unique features of the local CO2 exchange and to find effective methods to measure regional ecosystem–atmosphere CO2 exchange over complex terrain. The modeling effort included atmospheric and ecological numerical modeling and data assimilation to investigate regional CO2 transport and biological processes involved in ecosystem–atmosphere carbon exchange. In this report, we document our approaches, demonstrate some preliminary results, and discuss principal patterns and conclusions concerning ecosystem–atmosphere carbon exchange over complex terrain and its relation to past studies that have considered these processes over much simpler terrain.

National Center for Atmospheric Research,+ Boulder, Colorado

University of Colorado, Boulder, Colorado

National Ecological Observatory Network, Boulder, Colorado

University of Wisconsin—Madison, Madison, Wisconsin

University of Virginia, Charlottesville, Virginia

San Diego State University, San Diego, California

Washington State University, Pullman, Washington

Colorado State University, Fort Collins, Colorado

University of Miami, Miami, Florida

Michigan State University, East Lansing, Michigan

San José State University, San José, California

U.S. Geological Survey, Denver, Colorado

*ADDITIONAL AFFILIATION: University of Colorado, Boulder, Colorado

+The National Center for Atmospheric Research is sponsored by the National Science Foundation.

CORRESPONDING AUTHOR: Jielun Sun, National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80305, E-mail: jsun@ucar.edu

A significant fraction of Earth consists of mountainous terrain. However, the question of how to monitor the surface–atmosphere carbon exchange over complex terrain has not been fully explored. This article reports on studies by a team of investigators from U.S. universities and research institutes who carried out a multiscale and multidisciplinary field and modeling investigation of the CO2 exchange between ecosystems and the atmosphere and of CO2 transport over complex mountainous terrain in the Rocky Mountain region of Colorado. The goals of the field campaign, which included ground and airborne in situ and remote-sensing measurements, were to characterize unique features of the local CO2 exchange and to find effective methods to measure regional ecosystem–atmosphere CO2 exchange over complex terrain. The modeling effort included atmospheric and ecological numerical modeling and data assimilation to investigate regional CO2 transport and biological processes involved in ecosystem–atmosphere carbon exchange. In this report, we document our approaches, demonstrate some preliminary results, and discuss principal patterns and conclusions concerning ecosystem–atmosphere carbon exchange over complex terrain and its relation to past studies that have considered these processes over much simpler terrain.

National Center for Atmospheric Research,+ Boulder, Colorado

University of Colorado, Boulder, Colorado

National Ecological Observatory Network, Boulder, Colorado

University of Wisconsin—Madison, Madison, Wisconsin

University of Virginia, Charlottesville, Virginia

San Diego State University, San Diego, California

Washington State University, Pullman, Washington

Colorado State University, Fort Collins, Colorado

University of Miami, Miami, Florida

Michigan State University, East Lansing, Michigan

San José State University, San José, California

U.S. Geological Survey, Denver, Colorado

*ADDITIONAL AFFILIATION: University of Colorado, Boulder, Colorado

+The National Center for Atmospheric Research is sponsored by the National Science Foundation.

CORRESPONDING AUTHOR: Jielun Sun, National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80305, E-mail: jsun@ucar.edu
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