On the causes of trends in the seasonal amplitude of atmospheric CO₂
Piao, Shilong (Sino-French Institute for Earth System Science)
Liu, Zhuo (Sino-French Institute for Earth System Science)
Wang, Yilong (Laboratoire des Sciences du Climat et de l'Environment)
Ciais, Philippe (Laboratoire des Sciences du Climat et de L'Environnement)
Yao, Yitong (Sino-French Institute for Earth System Science)
Peng, Shushi (Sino-French Institute for Earth System Science)
Chevallier, Frédéric (Laboratoire des Sciences du Climat et de L'Environnement)
Friedlingstein, Pierre (University of Exeter. College of Engineering, Mathematics and Physical Sciences)
Janssens, Ivan (Universiteit Antwerpen. Departement Biologie)
Peñuelas, Josep (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia)
Sitch, Stephen (University of Exeter. College of Engineering, Mathematics and Physical Sciences)
Wang, Tao (Zhongguo ke xue yuan. Institute of Tibetan Plateau Research)

Data:	2018
Resum:	No consensus has yet been reached on the major factors driving the observed increase in the seasonal amplitude of atmospheric CO₂ in the northern latitudes. In this study, we used atmospheric CO₂ records from 26 northern hemisphere stations with a temporal coverage longer than 15 years, and an atmospheric transport model prescribed with net biome productivity (NBP) from an ensemble of nine terrestrial ecosystem models, to attribute change in the seasonal amplitude of atmospheric CO₂. We found significant (p < . 05) increases in seasonal peak-to-trough CO₂ amplitude (AMPP-T) at nine stations, and in trough-to-peak amplitude (AMPT-P) at eight stations over the last three decades. Most of the stations that recorded increasing amplitudes are in Arctic and boreal regions (.
Ajuts:	European Commission 610028
Drets:	Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Amplitude of atmospheric CO₂ ; Attribution ; Climate change ; CO₂ fertilization effect ; Detection ; Land-use change
Publicat a:	Global change biology, Vol. 24, issue 2 (Feb. 2018) , p. 608-616, ISSN 1365-2486

DOI: 10.1111/gcb.13909

Article. Post-print 34 p, 2.0 MB

Material suplementari. Post-print 22 p, 4.6 MB

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