气候变化领域集成服务门户(CCPortal): Modeling the Sources and Chemistry of Polar Tropospheric Halogens (Cl, Br, and I) Using the CAM-Chem Global Chemistry-Climate Model

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DOI	10.1029/2019MS001655
	Modeling the Sources and Chemistry of Polar Tropospheric Halogens (Cl, Br, and I) Using the CAM-Chem Global Chemistry-Climate Model
	Fernandez R.P.; Carmona-Balea A.; Cuevas C.A.; Barrera J.A.; Kinnison D.E.; Lamarque J.-F.; Blaszczak-Boxe C.; Kim K.; Choi W.; Hay T.; Blechschmidt A.-M.; Schönhardt A.; Burrows J.P.; Saiz-Lopez A.
发表日期	2019
ISSN	19422466
起始页码	2259
结束页码	2289
卷号	11 期号:7
英文摘要	Current chemistry climate models do not include polar emissions and chemistry of halogens. This work presents the first implementation of an interactive polar module into the very short-lived (VSL) halogen version of the Community Atmosphere Model with Chemistry (CAM-Chem) model. The polar module includes photochemical release of molecular bromine, chlorine, and interhalogens from the sea-ice surface, and brine diffusion of iodine biologically produced underneath and within porous sea-ice. It also includes heterogeneous recycling of inorganic halogen reservoirs deposited over fresh sea-ice surfaces and snow-covered regions. The polar emission of chlorine, bromine, and iodine reach approximately 32, 250, and 39 Gg/year for Antarctica and 33, 271, and 4 Gg/year for the Arctic, respectively, with a marked seasonal cycle mainly driven by sunlight and sea-ice coverage. Model results are validated against polar boundary layer measurements of ClO, BrO, and IO, and satellite BrO and IO columns. This validation includes satellite observations of IO over inner Antarctica for which an iodine “leapfrog” mechanism is proposed to transport active iodine from coastal source regions to the interior of the continent. The modeled chlorine and bromine polar sources represent up to 45% and 80% of the global biogenic VSLCl and VSLBr emissions, respectively, while the Antarctic sea-ice iodine flux is ~10 times larger than that from the Southern Ocean. We present the first estimate of the contribution of polar halogen emissions to the global tropospheric halogen budget. CAM-Chem includes now a complete representation of halogen sources and chemistry from pole-to-pole and from the Earth's surface up to the stratopause. ©2019. The Authors.
英文关键词	CAM-Chem model; global tropospheric chemistry; polar halogen chemistry; sea-ice halogen emissions
语种	英语
scopus关键词	Atmospheric chemistry; Boundary layers; Bromine; Bromine compounds; Budget control; Cams; Chlorine; Chlorine compounds; Iodine; Poles; Sea ice; Troposphere; Antarctic sea ice; Boundary layer measurements; Brine diffusion; Chemistry-climate models; Community atmosphere model; Molecular bromine; Satellite observations; Tropospheric chemistry; Climate models; atmospheric chemistry; boundary layer; climate modeling; emission; global change; halogen; photochemistry; pollutant source; satellite altimetry; sea ice; stratosphere; troposphere; Antarctica; Southern Ocean
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156960
作者单位	Department of Atmospheric Chemistry and Climate, Institute of Physical Chemistry Rocasolano, CSIC, Madrid, Spain; National Research Council (CONICET), FCEN-UNCuyo, UNT-FRM, Mendoza, Argentina; Atmospheric Chemistry, Observations & Modeling Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Department of Chemistry & Environmental Science, Medgar Evers College-City University of New York, Brooklyn, NY, United States; Chemistry Division, Earth and Environmental Science Division, CUNY Graduate Center, Manhattan, NY, United States; Department of Polar Sciences, University of Science and Technology, Incheon, South Korea; Korea Polar Research Institute (KOPRI), Incheon, South Korea; Division of Environmental Science and Engineering, Pohan University of Science and Technology (POSTECH), Pohan, South Korea; National Institute of Water and Atmospheric Research (NIWA), Lauder, New Zealand; Institute of Environmental Physics, University of Bremen, Bremen, Germany
推荐引用方式 GB/T 7714	Fernandez R.P.,Carmona-Balea A.,Cuevas C.A.,et al. Modeling the Sources and Chemistry of Polar Tropospheric Halogens (Cl, Br, and I) Using the CAM-Chem Global Chemistry-Climate Model[J],2019,11(7).
APA	Fernandez R.P..,Carmona-Balea A..,Cuevas C.A..,Barrera J.A..,Kinnison D.E..,...&Saiz-Lopez A..(2019).Modeling the Sources and Chemistry of Polar Tropospheric Halogens (Cl, Br, and I) Using the CAM-Chem Global Chemistry-Climate Model.Journal of Advances in Modeling Earth Systems,11(7).
MLA	Fernandez R.P.,et al."Modeling the Sources and Chemistry of Polar Tropospheric Halogens (Cl, Br, and I) Using the CAM-Chem Global Chemistry-Climate Model".Journal of Advances in Modeling Earth Systems 11.7(2019).