DOI: 10.1002/grl.50606
论文题名: Oxygen dynamics in the Black Sea as seen by Argo profiling floats
作者: Stanev E.V. ; He Y. ; Grayek S. ; Boetius A.
刊名: Geophysical Research Letters
ISSN: 0094-8840
EISSN: 1944-8571
出版年: 2013
卷: 40, 期: 12 起始页码: 3085
结束页码: 3090
语种: 英语
英文关键词: Oxygen
; Profiling floats
; Suboxic zone
Scopus关键词: Climatic trends
; Mesoscale process
; Mesoscale variability
; Oxygen concentrations
; Profiling float
; Seasonal variability
; Subsurface oxygen
; Temporal and spatial variability
; Dynamics
; Oceanography
; Oxygen
; Oxygen sensors
; Hydrographic surveys
; Argo
; isopycnal layer
; mesoscale meteorology
; oxygen
; profiler
; sampling
; spatiotemporal analysis
; suboxic conditions
; Black Sea
英文摘要: Observations collected in the Black Sea from May 2010 until December 2011 from two Argo floats with oxygen sensors demonstrated the potential of the applied technique to deliver high-quality oxygen data in this oxic/anoxic environment where the oxygen concentration varies from the level of saturation to zero. It was demonstrated that the dynamics of the oxic-anoxic interface was dominated by vigorous mesoscale processes displacing locally anoxic waters up to about 70 m below the sea surface. Alternatively, oxygenation (ventilation) in the coastal zone penetrated down to about 150-200 m. The range of mesoscale variability, which appeared to reach half of the range of climatic trend during the last 50 years, helped to objectively assess the validity of interpretation of historical data. It was proved that the shift of the suboxic zone from isopycnal depth Ït = 16.5 to Ït = 15.5 during 1960-2010, interrupted by its deepening between 1990 and 2000, was greater than the possible error limit caused by insufficient sampling of mesoscale variability. Furthermore, profiling floats shed a new light into the seasonal variability of the subsurface oxygen maximum. It was also demonstrated that the assumption of isopycnal alignment of oxygen was coarsely applicable to the suboxic layer in both the coastal and interior part of the Black Sea where the isopycnal mixing revealed large temporal and spatial variability. Therefore, deeper understanding of the dynamics of suboxic zone necessitated continuous basin-wide sampling. Key Points Argo floats observations with oxygen sensors are presented for the Black Sea Dynamics of the oxic-anoxic interface is dominated by mesoscale processes The isopycnal alignment of oxygen is questionable in the suboxic zone ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880517411&doi=10.1002%2fgrl.50606&partnerID=40&md5=c60c75cd1346913a9446eb3bf76616b5
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6104
Appears in Collections: 气候减缓与适应
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作者单位: Helmholtz-Zentrum Geesthacht, HZG/ICR, Max-Planck-Strasse 1, Geesthacht, D-21502, Germany
Recommended Citation:
Stanev E.V.,He Y.,Grayek S.,et al. Oxygen dynamics in the Black Sea as seen by Argo profiling floats[J]. Geophysical Research Letters,2013-01-01,40(12).