气候变化领域集成服务门户(CCPortal): Relationships Among Decadal Changes in Nitrate and Salinity in the Eastern and Western North Pacific Ocean After 2000

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DOI	10.1029/2019JC015916
	Relationships Among Decadal Changes in Nitrate and Salinity in the Eastern and Western North Pacific Ocean After 2000
	Kouketsu S.; Sasano D.; Osafune S.; Aoyama M.
发表日期	2020
ISSN	21699275
卷号	125 期号:8
英文摘要	Decadal changes in nitrate and preformed nitrate, as detected by the most accurate observations possible, were small in the subsurface layer around the subarctic front in the North Pacific Ocean. However, the patterns of differences in vertical sections were similar to those in repeat observations along survey Line P and were caused mainly by decadal rather than year-to-year changes. The changes in nitrate and preformed nitrate along Line P after 1996 were correlated with those based on high-accuracy observational data along 165°E (with lags of a few years). Whereas similar relationships at bidecadal timescales were reported previously based on more long-term historical data, the high-accuracy methods in this study allowed us to detect smaller decade-scale differences and compare the amplitudes of the changes. Furthermore, the patterns of changes were correlated with those for salinity, which a previous study considered to be formed mainly by eastward propagation of the decadal changes observed in the western part of the northern North Pacific. The time lags between the time series for nitrate and preformed nitrate were similar to the time required for the salinity anomalies to reach the Alaska Gyre from the western part of the subarctic front, which suggests that changes in the western part of the northern North Pacific Ocean affect those in the eastern part. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	decadal/bidecadal changes; highly accurate observations; nitrate concentration changes
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186728
作者单位	Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan; Global Environment and Marine Department, Japan Meteorological Agency, Tokyo, Japan; Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba, Tsukuba, Japan
推荐引用方式 GB/T 7714	Kouketsu S.,Sasano D.,Osafune S.,et al. Relationships Among Decadal Changes in Nitrate and Salinity in the Eastern and Western North Pacific Ocean After 2000[J],2020,125(8).
APA	Kouketsu S.,Sasano D.,Osafune S.,&Aoyama M..(2020).Relationships Among Decadal Changes in Nitrate and Salinity in the Eastern and Western North Pacific Ocean After 2000.Journal of Geophysical Research: Oceans,125(8).
MLA	Kouketsu S.,et al."Relationships Among Decadal Changes in Nitrate and Salinity in the Eastern and Western North Pacific Ocean After 2000".Journal of Geophysical Research: Oceans 125.8(2020).