气候变化领域集成服务门户(CCPortal): Drivers of Subsurface Deoxygenation in the Southern California Current System

CCPortal

DOI	10.1029/2020GL089274
	Drivers of Subsurface Deoxygenation in the Southern California Current System
	Evans N.; Schroeder I.D.; Pozo Buil M.; Jacox M.G.; Bograd S.J.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:21
英文摘要	A confluence of subarctic, tropical, and subtropical water masses feed the California Current System (CCS), supporting a highly productive ecosystem and wide array of marine ecosystem services. Long-term declines in oxygen have been observed in this region, causing habitat compression and other ecosystem consequences. Here we quantify the water masses and processes causing deoxygenation in the subsurface CCS from 1993–2018, and we find that deoxygenation was caused both by changes in the advection of source waters and increased remineralization in the source waters. The historical deoxygenation trend can be attributed primarily (81%) to the Northern Equatorial Pacific Intermediate Water, the deep Pacific Equatorial Water mass transported in the California Undercurrent. We also find that advection and remineralization share nearly equal contributions to deoxygenation. This improved understanding of the mechanisms affecting the aerobic habitat of the CCS will inform projections of ecological impacts and mitigation of future deoxygenation. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Advection; Oceanography; Tropics; California current systems; Ecological impacts; Ecosystem services; Equatorial Pacific; Equatorial water; Remineralization; Southern California; Subtropical water; Ecosystems; advection; ecological impact; ecosystem service; intermediate water; marine ecosystem; California Current; Pacific Ocean; Pacific Ocean (Equatorial)
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169496
作者单位	Department of Biological Sciences, University of Southern California, Los Angeles, CA, United States; Institute of Marine Sciences, University of California, Santa Cruz, CA, United States; Environmental Research Division, NOAA Southwest Fisheries Science Center, La Jolla, CA, United States; Physical Sciences Laboratory, NOAA Earth System Research Laboratories, Boulder, CO, United States
推荐引用方式 GB/T 7714	Evans N.,Schroeder I.D.,Pozo Buil M.,et al. Drivers of Subsurface Deoxygenation in the Southern California Current System[J],2020,47(21).
APA	Evans N.,Schroeder I.D.,Pozo Buil M.,Jacox M.G.,&Bograd S.J..(2020).Drivers of Subsurface Deoxygenation in the Southern California Current System.Geophysical Research Letters,47(21).
MLA	Evans N.,et al."Drivers of Subsurface Deoxygenation in the Southern California Current System".Geophysical Research Letters 47.21(2020).