气候变化领域集成服务门户(CCPortal): Meteorological export and deposition fluxes of black carbon on glaciers of the central Chilean Andes

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DOI	10.5194/acp-23-1749-2023
	Meteorological export and deposition fluxes of black carbon on glaciers of the central Chilean Andes
	Lapere, Remy; Huneeus, Nicolas; Mailler, Sylvain; Menut, Laurent; Couvidat, Florian
发表日期	2023
ISSN	1680-7316
EISSN	1680-7324
起始页码	1749
结束页码	1768
卷号	23 期号:2 页码:20
英文摘要	Air pollution in the central zone of Chile is not only a public health concern but also threatens water resources and climate, in connection with the transport and deposition of black carbon (BC) from urban centers onto the glaciers of the Andes. Chemistry-transport simulations reveal a seasonal dichotomy in the flux and latitudinal pattern of BC deposition on glaciers of the central Chilean Andes. The average deposition flux of BC on glaciers between 30 and 37 degrees S is 4 times larger in winter, affecting mostly low-elevation glaciers, whereas the smaller summertime flux affects glaciers evenly, irrespective of their elevation. The contribution of emissions from the city of Santiago is dominant in summertime with more than 50 % along the Andes but minor in wintertime with less than 20 % even close to the capital city. Transport at larger scales and more local sources likely account for the remaining flux. The superimposition of synoptic-scale circulation and local mountain-valley circulation along the Andes drives the differences between summertime and wintertime deposition fluxes and generates a greater meteorological export potential during summer months. Future emissions and climate projections suggest that under the RCP8.5 scenario the gap between summertime and wintertime BC export and deposition flux could decrease, thereby pointing to summertime emission control gaining relevance. The chemistry-transport modeling approach for BC deposition on the Andes sheds light on the importance of the often disregarded summertime emissions on the radiative balance of its glaciers, particularly in the vicinity of Santiago.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000923996700001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273445
作者单位	Centre National de la Recherche Scientifique (CNRS); Institut Polytechnique de Paris; UDICE-French Research Universities; Sorbonne Universite; Universite Paris Cite; Universite PSL; Universidad de Chile; Ecole des Ponts ParisTech; Institut National de l'Environnement Industriel et des Risques (INERIS)
推荐引用方式 GB/T 7714	Lapere, Remy,Huneeus, Nicolas,Mailler, Sylvain,et al. Meteorological export and deposition fluxes of black carbon on glaciers of the central Chilean Andes[J],2023,23(2):20.
APA	Lapere, Remy,Huneeus, Nicolas,Mailler, Sylvain,Menut, Laurent,&Couvidat, Florian.(2023).Meteorological export and deposition fluxes of black carbon on glaciers of the central Chilean Andes.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(2),20.
MLA	Lapere, Remy,et al."Meteorological export and deposition fluxes of black carbon on glaciers of the central Chilean Andes".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.2(2023):20.