期刊
JOURNAL OF SEA RESEARCH
卷 71, 期 -, 页码 1-8出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.seares.2012.03.003
关键词
Arabian Sea; Argo; Dissolved Oxygen; Oxygen Minimum Zone
资金
- INCOIS
Dissolved oxygen concentration in the oceanic waters plays a vital role in the global carbon cycle. The addition of oxygen sensors in the ongoing Argo programme could revolutionize our understanding of the ocean's role in climate change. Here we present a first analysis of the oxygen profiles obtained from Argo float 2900776, deployed in the oxygen minimum zone of the central Arabian Sea, one of the thickest oxygen minimum zones in the world ocean. Our study shows perennial oxygen minima in the sub-surface waters of the central Arabian Sea with strong inter-annual and intra-seasonal variability. The depth of the oxycline varies from 60 to 120 m but occasionally it may be as shallow as 40 m. It appears from the present data set that in the southeastern Arabian Sea the low oxygen water shoals up during the early winter monsoon and it is largely controlled by remote forcing. Small scale localized high wind events can cause further shoaling of the oxycline. (C) 2012 Elsevier B.V. All rights reserved.
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