DOI: 10.1002/2016GL067911
论文题名: Paleodust variability since the Last Glacial Maximum and implications for iron inputs to the ocean
作者: Albani S. ; Mahowald N.M. ; Murphy L.N. ; Raiswell R. ; Moore J.K. ; Anderson R.F. ; McGee D. ; Bradtmiller L.I. ; Delmonte B. ; Hesse P.P. ; Mayewski P.A.
刊名: Geophysical Research Letters
ISSN: 0094-9088
EISSN: 1944-8819
出版年: 2016
卷: 43, 期: 8 起始页码: 3944
结束页码: 3954
语种: 英语
英文关键词: dust
; Holocene
; iron fertilization
; Last Glacial Maximum
; paleodust
; soluble iron
Scopus关键词: Biogeochemistry
; Carbon
; Deposition
; Dust
; Glacial geology
; Iron
; Oceanography
; Sea ice
; Uncertainty analysis
; Holocenes
; Iron fertilization
; Last Glacial Maximum
; Paleodust
; Soluble irons
; Climate models
; atmospheric deposition
; biogeochemistry
; carbon cycle
; climate effect
; dust
; Holocene
; iron
; Last Glacial Maximum
; paleoenvironment
; reconstruction
; sea ice
; Southern Ocean
英文摘要: Changing climate conditions affect dust emissions and the global dust cycle, which in turn affects climate and biogeochemistry. In this study we use observationally constrained model reconstructions of the global dust cycle since the Last Glacial Maximum, combined with different simplified assumptions of atmospheric and sea ice processing of dust-borne iron, to provide estimates of soluble iron deposition to the oceans. For different climate conditions, we discuss uncertainties in model-based estimates of atmospheric processing and dust deposition to key oceanic regions, highlighting the large degree of uncertainty of this important variable for ocean biogeochemistry and the global carbon cycle. We also show the role of sea ice acting as a time buffer and processing agent, which results in a delayed and pulse-like soluble iron release into the ocean during the melting season, with monthly peaks up to ~17 Gg/month released into the Southern Oceans during the Last Glacial Maximum (LGM). ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84992302082&doi=10.1002%2f2016GL067911&partnerID=40&md5=7cd70975e77d428ed6758ce1bb96b32e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10051
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, NY, United States
Recommended Citation:
Albani S.,Mahowald N.M.,Murphy L.N.,et al. Paleodust variability since the Last Glacial Maximum and implications for iron inputs to the ocean[J]. Geophysical Research Letters,2016-01-01,43(8).