气候变化领域集成服务门户(CCPortal): Causes of slowing-down seasonal CO(2)amplitude at Mauna Loa

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DOI	10.1111/gcb.15162
	Causes of slowing-down seasonal CO(2)amplitude at Mauna Loa
	Wang, Kai; Wang, Yilong; Wang, Xuhui; He, Yue; Li, Xiangyi; Keeling, Ralph F.; Ciais, Philippe; Heimann, Martin; Peng, Shushi; Chevallier, Frederic; Friedlingstein, Pierre; Sitch, Stephen; Buermann, Wolfgang; Arora, Vivek K.; Haverd, Vanessa; Jain, Atul K.; Kato, Etsushi; Lienert, Sebastian; Lombardozzi, Danica; Nabel, Julia E. M. S.; Poulter, Benjamin; Vuichard, Nicolas; Wiltshire, Andy; Zeng, Ning; Zhu, Dan; Piao, Shilong
通讯作者	Wang, XH (通讯作者)
发表日期	2020
ISSN	1354-1013
EISSN	1365-2486
起始页码	4462
结束页码	4477
卷号	26 期号:8
英文摘要	Changing amplitude of the seasonal cycle of atmospheric CO2(SCA) in the northern hemisphere is an emerging carbon cycle property. Mauna Loa (MLO) station (20 degrees N, 156 degrees W), which has the longest continuous northern hemisphere CO(2)record, shows an increasing SCA before the 1980s (p < .01), followed by no significant change thereafter. We analyzed the potential driving factors of SCA slowing-down, with an ensemble of dynamic global vegetation models (DGVMs) coupled with an atmospheric transport model. We found that slowing-down of SCA at MLO is primarily explained by response of net biome productivity (NBP) to climate change, and by changes in atmospheric circulations. Through NBP, climate change increases SCA at MLO before the 1980s and decreases it afterwards. The effect of climate change on the slowing-down of SCA at MLO is mainly exerted by intensified drought stress acting to offset the acceleration driven by CO(2)fertilization. This challenges the view that CO(2)fertilization is the dominant cause of emergent SCA trends at northern sites south of 40 degrees N. The contribution of agricultural intensification on the deceleration of SCA at MLO was elusive according to land-atmosphere CO(2)flux estimated by DGVMs and atmospheric inversions. Our results also show the necessity to adequately account for changing circulation patterns in understanding carbon cycle dynamics observed from atmospheric observations and in using these observations to benchmark DGVMs.
关键词	ATMOSPHERIC CO2 CARBON-DIOXIDE INTERCOMPARISON PROJECT AMPLITUDE INCREASE LAND-USE MODEL CYCLE REANALYSIS EXCHANGE CLIMATE
英文关键词	atmospheric circulation; climate change; land use change; Mauna Loa; seasonal CO(2)amplitude; slowing-down
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:000541244200001
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/260114
推荐引用方式 GB/T 7714	Wang, Kai,Wang, Yilong,Wang, Xuhui,et al. Causes of slowing-down seasonal CO(2)amplitude at Mauna Loa[J]. 中国科学院青藏高原研究所,2020,26(8).
APA	Wang, Kai.,Wang, Yilong.,Wang, Xuhui.,He, Yue.,Li, Xiangyi.,...&Piao, Shilong.(2020).Causes of slowing-down seasonal CO(2)amplitude at Mauna Loa.GLOBAL CHANGE BIOLOGY,26(8).
MLA	Wang, Kai,et al."Causes of slowing-down seasonal CO(2)amplitude at Mauna Loa".GLOBAL CHANGE BIOLOGY 26.8(2020).