作者
Peter A Raymond, Jens Hartmann, Ronny Lauerwald, Sebastian Sobek, Cory McDonald, Mark Hoover, David Butman, Robert Striegl, Emilio Mayorga, Christoph Humborg, Pirkko Kortelainen, Hans Dürr, Michel Meybeck, Philippe Ciais, Peter Guth
发表日期
2013/11/21
期刊
Nature
卷号
503
期号
7476
页码范围
355-359
出版商
Nature Publishing Group UK
简介
Carbon dioxide (CO2) transfer from inland waters to the atmosphere, known as CO2 evasion, is a component of the global carbon cycle. Global estimates of CO2 evasion have been hampered, however, by the lack of a framework for estimating the inland water surface area and gas transfer velocity and by the absence of a global CO2 database. Here we report regional variations in global inland water surface area, dissolved CO2 and gas transfer velocity. We obtain global CO2 evasion rates of 1.8 petagrams of carbon (Pg C) per year from streams and rivers and 0.32 Pg C yr− 1 from lakes and reservoirs, where the upper and lower limits are respectively the 5th and 95th confidence interval percentiles. The resulting global evasion rate of 2.1 Pg C yr− 1 is higher than previous estimates owing to a larger stream and river evasion rate. Our analysis predicts global hotspots in stream and river evasion, with about 70 per …
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PA Raymond, J Hartmann, R Lauerwald, S Sobek… - Nature, 2013