气候变化领域集成服务门户(CCPortal): On the causes of trends in the seasonal amplitude of atmospheric CO2

CCPortal

DOI	10.1111/gcb.13909
	On the causes of trends in the seasonal amplitude of atmospheric CO2
	Piao, Shilong; Liu, Zhuo; Wang, Yilong; Ciais, Philippe; Yao, Yitong; Peng, Shushi; Chevallier, Frederic; Friedlingstein, Pierre; Janssens, Ivan A.; Penuelas, Josep; Sitch, Stephen; Wang, Tao
通讯作者	Piao, SL (通讯作者)
发表日期	2018
ISSN	1354-1013
EISSN	1365-2486
起始页码	608
结束页码	616
卷号	24 期号:2
英文摘要	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 (AMP(P-T)) at nine stations, and in trough-to-peak amplitude (AMP(T-P)) at eight stations over the last three decades. Most of the stations that recorded increasing amplitudes are in Arctic and boreal regions (> 50 degrees N), consistent with previous observations that the amplitude increased faster at Barrow (Arctic) than at Mauna Loa (subtropics). The multi-model ensemble mean (MMEM) shows that the response of ecosystem carbon cycling to rising CO2 concentration (eCO(2)) and climate change are dominant drivers of the increase in AMP(P-T) and AMP(T-P) in the high latitudes. At the Barrow station, the observed increase of AMP(P-T) and AMP(T-P) over the last 33 years is explained by eCO(2) (39% and 42%) almost equally than by climate change (32% and 35%). The increased carbon losses during the months with a net carbon release in response to eCO(2) are associated with higher ecosystem respiration due to the increase in carbon storage caused by eCO(2) during carbon uptake period. Air-sea CO2 fluxes (10% for AMP(P-T) and 11% for AMP(T-P)) and the impacts of land-use change (marginally significant 3% for AMP(P-T) and 4% for AMP(T-P)) also contributed to the CO2 measured at Barrow, highlighting the role of these factors in regulating seasonal changes in the global carbon cycle.
关键词	MODEL INTERCOMPARISON PROJECT PROGRAM MULTISCALE SYNTHESIS MAUNA-LOA NORTHERN ECOSYSTEMS CARBON-DIOXIDE LAND-USE CYCLE TEMPERATURE VEGETATION EXCHANGE
英文关键词	amplitude of atmospheric CO2; attribution; climate change; CO2 fertilization effect; detection; land-use change
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:000423994700034
来源期刊	GLOBAL CHANGE BIOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259373
推荐引用方式 GB/T 7714	Piao, Shilong,Liu, Zhuo,Wang, Yilong,et al. On the causes of trends in the seasonal amplitude of atmospheric CO2[J]. 中国科学院青藏高原研究所,2018,24(2).
APA	Piao, Shilong.,Liu, Zhuo.,Wang, Yilong.,Ciais, Philippe.,Yao, Yitong.,...&Wang, Tao.(2018).On the causes of trends in the seasonal amplitude of atmospheric CO2.GLOBAL CHANGE BIOLOGY,24(2).
MLA	Piao, Shilong,et al."On the causes of trends in the seasonal amplitude of atmospheric CO2".GLOBAL CHANGE BIOLOGY 24.2(2018).