CO2 and CH4 exchanges between land ecosystems and the atmosphere in northern high latitudes over the 21st century

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Date
2006-09-15Author
Zhuang, Qianlai
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Melillo, Jerry M.
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Sarofim, Marcus C.
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Kicklighter, David W.
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McGuire, A. David
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Felzer, Benjamin S.
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Sokolov, Andrei P.
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Prinn, Ronald G.
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Steudler, Paul A.
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Hu, Shaomin
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https://hdl.handle.net/1912/1264As published
https://doi.org/10.1029/2006GL026972DOI
10.1029/2006GL026972Abstract
Terrestrial ecosystems of the northern high latitudes (above 50oN) exchange large
amounts of CO2 and CH4 with the atmosphere each year. Here we use a process-based
model to estimate the budget of CO2 and CH4 of the region for current climate conditions
and for future scenarios by considering effects of permafrost dynamics, CO2 fertilization of photosynthesis and fire. We find that currently the region is a net source of carbon to the atmosphere at 276 Tg C yr-1. We project that throughout the 21st century, the region will most likely continue as a net source of carbon and the source will increase by up to 473 Tg C yr-1 by the end of the century compared to the current emissions. However our coupled
carbon and climate model simulations show that these emissions will exert relatively small radiative forcing on global climate system compared to large amounts of anthropogenic emissions.
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Author Posting. © American Geophysical Union, 2006. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 33 (2006): L17403, doi:10.1029/2006GL026972.
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Article: Zhuang, Qianlai, Melillo, Jerry M., Sarofim, Marcus C., Kicklighter, David W., McGuire, A. David, Felzer, Benjamin S., Sokolov, Andrei P., Prinn, Ronald G., Steudler, Paul A., Hu, Shaomin, "CO2 and CH4 exchanges between land ecosystems and the atmosphere in northern high latitudes over the 21st century", Geophysical Research Letters 33 (2006): L17403, DOI:10.1029/2006GL026972, https://hdl.handle.net/1912/1264Related items
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