DOI: 10.1029/2017JD028123
Scopus记录号: 2-s2.0-85046287808
论文题名: Denali Ice Core Methanesulfonic Acid Records North Pacific Marine Primary Production
作者: Polashenski D.J. ; Osterberg E.C. ; Koffman B.G. ; Winski D. ; Stamieszkin K. ; Kreutz K.J. ; Wake C.P. ; Ferris D.G. ; Introne D. ; Campbell S. ; Lewis G.M.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 9 起始页码: 4642
结束页码: 4653
语种: 英语
英文关键词: chlorophyll a
; Denali ice core
; marine primary production
; methanesulfonic acid (MSA)
Scopus关键词: chemical compound
; chlorophyll a
; concentration (composition)
; ice core
; marine ecosystem
; marine environment
; primary production
; satellite sensor
; snow accumulation
; Pacific Ocean
; Pacific Ocean (Northeast)
英文摘要: The high-nutrient, low-chlorophyll region of the northeastern (NE) subarctic Pacific is one of the most biologically productive marine ecosystems in the world, supporting fisheries worth over $5 billion annually. Phytoplankton are the primary producers in this ecosystem and are also a major source of biogenic sulfur emissions, important in Earth's climate system. However, variability in marine primary production through time is not well constrained. Here we establish methanesulfonic acid (MSA) concentrations in the Denali ice core as a proxy for marine primary production in the NE Pacific. Using Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT; Stein et al., 2015, https://doi.org/10.1178/BAMS-D-14-00110.1) modeling, we identify moisture source regions for the core site and correlate Sea-Viewing Wide Field-of-View Sensor-derived chlorophyll a concentrations with ice core MSA. From 1998 to 2007 we find that areas of significant positive correlation overlap with the HYSPLIT-inferred moisture source region in the western Gulf of Alaska on an annual basis (r = 0.85, p < 0.001). We identify an MSA response to a localized bloom related to ash deposition from a 2009 Mt. Redoubt eruption. An anomalous upwelling-driven bloom in spring 2008 did not impact the ice core MSA record due to unfavorable transport conditions. Despite this, we observe that bloom events are rarely missed in the MSA record, which we attribute to the consistent and high snow accumulation rate at the ice core drill site. Our findings suggest that Denali ice core MSA is a reliable recorder of changes in marine primary production through time in the NE subarctic Pacific. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113892
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth Sciences, Dartmouth College, Hanover, NH, United States; Department of Geology, Colby College, Waterville, ME, United States; Bigelow Laboratory for Ocean Sciences, East Boothbay, ME, United States; School of Earth and Climate Sciences and the Climate Change Institute, University of Maine, Orono, ME, United States; Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH, United States
Recommended Citation:
Polashenski D.J.,Osterberg E.C.,Koffman B.G.,et al. Denali Ice Core Methanesulfonic Acid Records North Pacific Marine Primary Production[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(9)