干旱区生态环境知识资源中心(Arid): Impact of Changes to the Atmospheric Soluble Iron Deposition Flux on Ocean Biogeochemical Cycles in the Anthropocene

Arid

DOI	10.1029/2019GB006448
	Impact of Changes to the Atmospheric Soluble Iron Deposition Flux on Ocean Biogeochemical Cycles in the Anthropocene
	Hamilton, Douglas S.1; Moore, J. Keith 2; Arneth, Almut 3; Bond, Tami C.4; Carslaw, Ken S.5; Hantson, Stijn 6; Ito, Akinori 7; Kaplan, Jed O.8; Lindsay, Keith 9; Nieradzik, Lars 10; Rathod, Sagar D.11; Scanza, Rachel A.12; Mahowald, Natalie M.1
通讯作者	Hamilton, Douglas S.
来源期刊	GLOBAL BIOGEOCHEMICAL CYCLES
ISSN	0886-6236
EISSN	1944-9224
出版年	2020
卷号	34 期号:3
英文摘要	Iron can be a growth-limiting nutrient for phytoplankton, modifying rates of net primary production, nitrogen fixation, and carbon export - highlighting the importance of new iron inputs from the atmosphere. The bioavailable iron fraction depends on the emission source and the dissolution during transport. The impacts of anthropogenic combustion and land use change on emissions from industrial, domestic, shipping, desert, and wildfire sources suggest that Northern Hemisphere soluble iron deposition has likely been enhanced between 2% and 68% over the Industrial Era. If policy and climate follow the intermediate Representative Concentration Pathway 4.5 trajectory, then results suggest that Southern Ocean (>30 degrees S) soluble iron deposition would be enhanced between 63% and 95% by 2100. Marine net primary productivity and carbon export within the open ocean are most sensitive to changes in soluble iron deposition in the Southern Hemisphere; this is predominantly driven by fire rather than dust iron sources. Changes in iron deposition cause large perturbations to the marine nitrogen cycle, up to 70% increase in denitrification and 15% increase in nitrogen fixation, but only modestly impacts the carbon cycle and atmospheric CO2 concentrations (1-3 ppm). Regionally, primary productivity increases due to increased iron deposition are often compensated by offsetting decreases downstream corresponding to equivalent changes in the rate of phytoplankton macronutrient uptake, particularly in the equatorial Pacific. These effects are weaker in the Southern Ocean, suggesting that changes in iron deposition in this region dominates the global carbon cycle and climate response.
英文关键词	biogeochemistry iron cycle carbon cycle nitrogen cycle marine net primary productivity
类型	Article
语种	英语
国家	USA ; Germany ; England ; Japan ; Peoples R China ; Sweden
开放获取类型	Green Published, Bronze
收录类别	SCI-E
WOS记录号	WOS:000522031600003
WOS关键词	FINE-PARTICLE EMISSIONS ; EARTH SYSTEM MODEL ; MINERAL DUST ; DISSOLVED IRON ; CLIMATE-CHANGE ; SOUTHERN-OCEAN ; DESERT DUST ; CHEMICAL-CHARACTERIZATION ; INTERMEDIATE-COMPLEXITY ; COMBUSTION AEROSOLS
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
来源机构	Colorado State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314630
作者单位	1.Cornell Univ, Dept Earth & Atmospher Sci, Ithaca, NY 14850 USA; 2.Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA USA; 3.Karlsruhe Inst Technol, Inst Meteorol & Climate Res Atmospher Environm Re, Garmisch Partenkirchen, Germany; 4.Colorado State Univ, Dept Mech Engn, Ft Collins, CO 80523 USA; 5.Univ Leeds, Sch Earth & Environm, Leeds, W Yorkshire, England; 6.Univ Calif Irvine, Geospatial Data Solut Ctr, Irvine, CA USA; 7.Yokohama Inst Earth Sci, JAMSTEC, Yokohama, Kanagawa, Japan; 8.Univ Hong Kong, Dept Earth Sci, Hong Kong, Peoples R China; 9.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 10.Lund Univ, Inst Phys Geog & Ecosyst Sci, Lund, Sweden; 11.Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA; 12.Pacific Northwest Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA
推荐引用方式 GB/T 7714	Hamilton, Douglas S.,Moore, J. Keith,Arneth, Almut,et al. Impact of Changes to the Atmospheric Soluble Iron Deposition Flux on Ocean Biogeochemical Cycles in the Anthropocene[J]. Colorado State University,2020,34(3).
APA	Hamilton, Douglas S..,Moore, J. Keith.,Arneth, Almut.,Bond, Tami C..,Carslaw, Ken S..,...&Mahowald, Natalie M..(2020).Impact of Changes to the Atmospheric Soluble Iron Deposition Flux on Ocean Biogeochemical Cycles in the Anthropocene.GLOBAL BIOGEOCHEMICAL CYCLES,34(3).
MLA	Hamilton, Douglas S.,et al."Impact of Changes to the Atmospheric Soluble Iron Deposition Flux on Ocean Biogeochemical Cycles in the Anthropocene".GLOBAL BIOGEOCHEMICAL CYCLES 34.3(2020).