A study using atmospheric observations and modeling tools finds that the long-term increase in the amplitude of the atmospheric CO 2 seasonal cycle in the Northern Hemisphere is driven primarily by enhanced seasonal carbon exchange in only a few regions, namely Siberian and temperate ecosystems; in contrast, changes in arctic-boreal North American ecosystems have relatively weak localized impacts on the CO 2 amplitude increase, according to the authors.
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Article #19-14135: "Siberian and temperate ecosystems shape Northern Hemisphere atmospheric CO 2 seasonal amplification," by Xin Lin et al.
MEDIA CONTACTS: Xin Lin, University of Michigan-Ann Arbor, MI; e-mail: xinlinn@umich.edu ; Gretchen Keppel-Aleks, University of Michigan-Ann Arbor, MI; e-mail: gkeppela@umich.edu
Proceedings of the National Academy of Sciences