气候变化领域集成服务门户(CCPortal): Effects of atmospheric aerosols on terrestrial carbon fluxes and CO2 concentrations in China

CCPortal

DOI	10.1016/j.atmosres.2020.104859
	Effects of atmospheric aerosols on terrestrial carbon fluxes and CO2 concentrations in China
	Xie X.; Wang T.; Yue X.; Li S.; Zhuang B.; Wang M.
发表日期	2020
ISSN	0169-8095
卷号	237
英文摘要	Atmospheric aerosols have contributed to the terrestrial carbon cycle through diffuse radiation fertilization effect and hydrometeorological feedbacks. Subsequently, perturbations in terrestrial carbon sink alter atmospheric carbon dioxide (CO2) concentrations and influence future climate change. Here, we use a regional climate model, RegCM4, coupled with the Yale Interactive terrestrial Biosphere model (YIBs) to assess the effects of the current aerosol loading on terrestrial carbon fluxes and atmospheric CO2 concentrations during 2006–2015 over China. We found that aerosols enhance gross primary production (GPP) by 0.36 Pg C yr−1 (5%), which primarily stems from Southwest and Southeast China. Meanwhile, the aerosol-induced diffuse fraction (DF) increase, surface cooling and vapor pressure deficit (VPD) decrease together lead to a − 0.06 Pg C yr−1 (21%) reduction in the net ecosystem exchange (NEE). Among them, aerosol-induced DF increment is found to be the dominant contributor, which covers ~ 59–62% of China's land area. The effects of aerosols on GPP and NEE are more evident in the growing season, with maximum effects occurring in July and August, respectively. Moreover, the terrestrial carbon sink enhancement due to aerosols further results in a significant decline in CO2 concentrations, with a large reduction (>2 ppm) found in southern and eastern parts of China during the summer. Our results highlight the importance of understanding the interactions among aerosol pollution, climate change, and the global carbon cycle. © 2020 Elsevier B.V.
英文关键词	Aerosols; Carbon dioxide; China; Diffuse radiation fertilization; Terrestrial carbon fluxes
学科领域	Aerosols; Air pollution; Atmospheric chemistry; Atmospheric thermodynamics; Carbon dioxide; Climate change; Climate models; Atmospheric carbon dioxide; Carbon fluxes; China; Diffuse radiation; Gross primary production; Net ecosystem exchange; Regional climate modeling; Terrestrial carbon cycle; Atmospheric aerosols; aerosol; atmospheric pollution; carbon cycle; carbon dioxide; carbon flux; carbon sink; climate change; concentration (composition); China
语种	英语
scopus关键词	Aerosols; Air pollution; Atmospheric chemistry; Atmospheric thermodynamics; Carbon dioxide; Climate change; Climate models; Atmospheric carbon dioxide; Carbon fluxes; China; Diffuse radiation; Gross primary production; Net ecosystem exchange; Regional climate modeling; Terrestrial carbon cycle; Atmospheric aerosols; aerosol; atmospheric pollution; carbon cycle; carbon dioxide; carbon flux; carbon sink; climate change; concentration (composition); China
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120440
作者单位	School of Atmospheric Sciences, Nanjing University, Nanjing, 210023, China; Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology (NUIST), Nanjing, 210044, China
推荐引用方式 GB/T 7714	Xie X.,Wang T.,Yue X.,et al. Effects of atmospheric aerosols on terrestrial carbon fluxes and CO2 concentrations in China[J],2020,237.
APA	Xie X.,Wang T.,Yue X.,Li S.,Zhuang B.,&Wang M..(2020).Effects of atmospheric aerosols on terrestrial carbon fluxes and CO2 concentrations in China.Atmospheric Research,237.
MLA	Xie X.,et al."Effects of atmospheric aerosols on terrestrial carbon fluxes and CO2 concentrations in China".Atmospheric Research 237(2020).