DOI: 10.1002/2016GL068339
论文题名: Near-surface salinity and stratification in the north Bay of Bengal from moored observations
作者: Sengupta D. ; Bharath Raj G.N. ; Ravichandran M. ; Sree Lekha J. ; Papa F.
刊名: Geophysical Research Letters
ISSN: 0094-9017
EISSN: 1944-8748
出版年: 2016
卷: 43, 期: 9 起始页码: 4448
结束页码: 4456
语种: 英语
英文关键词: near-surface salinity
; river water
; stratification
Scopus关键词: Atmospheric temperature
; Mooring
; Oceanography
; Rivers
; Surface waters
; Thermal stratification
; Water
; Air sea interactions
; High frequency HF
; Large-scale flows
; Near surfaces
; River water
; Salinity stratification
; Sea surface temperature (SST)
; Temperature changes
; Water resources
英文摘要: A thin layer of fresh water from summer monsoon rain and river runoff in the Bay of Bengal (BoB) has profound influence on air-sea interaction across the south Asian region, but the mechanisms that sustain the low-salinity layer are as yet unknown. Using the first long time series of high-frequency observations from a mooring in the north BoB and satellite salinity data, we show that fresh water from major rivers is transported by large-scale flow and eddies, and shallow salinity stratification persists from summer through the following winter. The moored observations show frequent 0.2-1.2 psu salinity jumps with time scales of 10 min to days, due to O(1-10) km submesoscale salinity fronts moving past the mooring. In winter, satellite sea surface temperature shows 10 km wide filaments of cool water, in line with moored data. Rapid salinity and temperature changes at the mooring are highly coherent, suggesting slumping of salinity-dominated fronts. Based on these observations, we propose that submesoscale fronts may be one of the important drivers for the persistent fresh layer in the north BoB. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84966441165&doi=10.1002%2f2016GL068339&partnerID=40&md5=0db92e6eb86cddf6d92c8bfccfabeacd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9980
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Centre for Atmospheric and Oceanic Sciences, Indian Institute of Science, Bangalore, India
Recommended Citation:
Sengupta D.,Bharath Raj G.N.,Ravichandran M.,et al. Near-surface salinity and stratification in the north Bay of Bengal from moored observations[J]. Geophysical Research Letters,2016-01-01,43(9).