气候变化领域集成服务门户(CCPortal): A Mineralogy-Based Anthropogenic Combustion-Iron Emission Inventory

CCPortal

DOI	10.1029/2019JD032114
	A Mineralogy-Based Anthropogenic Combustion-Iron Emission Inventory
	Rathod S.D.; Hamilton D.S.; Mahowald N.M.; Klimont Z.; Corbett J.J.; Bond T.C.
发表日期	2020
ISSN	2169897X
卷号	125 期号:17
英文摘要	Atmospheric supply of iron can modulate ocean biogeochemistry, due to its key role in global nitrogen and carbon cycles. Current estimates predict up to 20% of global ocean net primary productivity depends on an atmospheric iron source. Using a technology-based methodology, we revise total and soluble anthropogenic iron emissions and resolve iron into its mineral components, which allows modeling mineral-specific atmospheric reactions. We compare different methodologies for representing anthropogenic iron solubility: measured in mild and strong leaches and estimated using a mineralogy basis and identify the emissions that are most affected by such assumptions. The inclusion of metal smelting as an iron source increases iron emissions by up to 10 times higher in the fine aerosol fraction (smaller than 1 μm) than most previous inventories. Different solubility assumptions alter anthropogenic soluble iron emissions and deposition by a factor of 20 and 10, respectively. Using solubilities measured in mild leaches and calculated by mineralogy give 20–30 Gg/yr anthropogenic emissions and 40–50 Gg/yr deposition, while those measured in strong leaches give 80–440 Gg/yr emissions and 200–450 Gg/yr deposition. This range of anthropogenic soluble iron deposition leads to global soluble iron deposition of 1,900–2,300 Gg/yr when dust, wildfires, and atmospheric processing are included, indicating such assumptions can affect global soluble iron supply by about 30%. In regions where marine primary productivity is iron limited, anthropogenic combustion-iron contributes up to half of the atmospheric soluble iron flux to the North Pacific Ocean but supplies less than 5% to the Southern Ocean. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	anthropogenic; biogeochemistry; emissions; iron; mineralogy; solubility
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185798
作者单位	Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, United States; Now at Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States; Earth and Atmospheric Sciences Department, Cornell University, Ithaca, NY, United States; International Institute for Applied Systems Analysis (IIASA), Laxenburg, Austria; College of Earth, Ocean, and Environment, University of Delaware, Newark, DE, United States; Now at Department of Mechanical Engineering, Colorado State University, Fort Collins, CO, United States
推荐引用方式 GB/T 7714	Rathod S.D.,Hamilton D.S.,Mahowald N.M.,et al. A Mineralogy-Based Anthropogenic Combustion-Iron Emission Inventory[J],2020,125(17).
APA	Rathod S.D.,Hamilton D.S.,Mahowald N.M.,Klimont Z.,Corbett J.J.,&Bond T.C..(2020).A Mineralogy-Based Anthropogenic Combustion-Iron Emission Inventory.Journal of Geophysical Research: Atmospheres,125(17).
MLA	Rathod S.D.,et al."A Mineralogy-Based Anthropogenic Combustion-Iron Emission Inventory".Journal of Geophysical Research: Atmospheres 125.17(2020).