Articles | Volume 15, issue 23
https://doi.org/10.5194/acp-15-13739-2015
https://doi.org/10.5194/acp-15-13739-2015
Research article
 | 
14 Dec 2015
Research article |  | 14 Dec 2015

Analysis of CO2 mole fraction data: first evidence of large-scale changes in CO2 uptake at high northern latitudes

J. M. Barlow, P. I. Palmer, L. M. Bruhwiler, and P. Tans

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Cited articles

Bacastow, R. B., Keeling, C. D., and Whorf, T. P.: Seasonal amplitude increase in atmospheric CO2 concentration at Mauna Loa, Hawaii, 1959–1982, J. Geophys. Res., 90, 10529–10540, https://doi.org/10.1029/JD090iD06p10529, 1985.
Ballantyne, A. P., Alden, C. B., Miller, J. B., Tans, P. P., and White, J. W. C.: Increase in observed net carbon dioxide uptake by land and oceans during the past 50 years, Nature, 488, 70–72, 2012.
Barichivich, J., Briffa, K. R., Osborn, T. J., Melvin, T. M., and Caesar, J.: Thermal growing season and timing of biospheric carbon uptake across the Northern Hemisphere, Global Biogeochem. Cy., 26, GB4015, https://doi.org/10.1029/2012GB004312, 2012.
Barichivich, J., Briffa, K. R., Myneni, R. B., Osborn, T. J., Melvin, T. M., Ciais, P., Piao, L., and Tucker, C.: Large-scale variations in the vegetation growing season and annual cycle of atmospheric CO2 at high northern latitudes from 1950 to 2011, Glob. Change Biol., 19, 3167–3183, 2013.
Cong, N., Wang, T., Nan, H., Ma, Y., Wang, X., Myneni, R. B., and Piao, S.: Changes in satellite-derived spring vegetation green-up date and its linkage to climate in China from 1982 to 2010: a multimethod analysis, Glob. Change Biol., 19, 881–891, 2013.
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Short summary
The major results from our analysis include (1) a significant revision to previously reported estimates of phase changes in the seasonal cycle atmospheric CO2, which are more closely related to changes in the terrestrial biosphere; and (2) an indirect observation that is consistent with high northern latitude ecosystems progressively taking up more CO2 during spring and early summer.
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