DOI: 10.3354/cr01269
Scopus记录号: 2-s2.0-84982118710
论文题名: An abrupt change in winds that may radically affect the coasts and deep sections of the Baltic Sea
作者: Soomere T. ; Bishop S.R. ; Viška M. ; Räämet A.
刊名: Climate Research
ISSN: 0936577X
出版年: 2015
卷: 62, 期: 2 起始页码: 163
结束页码: 171
语种: 英语
英文关键词: Baltic Sea
; Geostrophic air-flow
; Regime shift
; Sediment transport
; Wave climate
; Wave direction
; Wave observations
Scopus关键词: airflow
; coastal zone
; geostrophic flow
; inflow
; radical
; reconstruction
; sediment transport
; wave climate
; wind field
; wind-driven circulation
; Atlantic Ocean
; Baltic Sea
英文摘要: We explore long-term variations in the properties of waves in the Baltic Sea and geostrophic air-flow over this water body. Records of visual wave observations from 1946 to 2012 at 8 observation sites at the eastern coast of the Baltic Sea reveal a multitude of changes. A substantial decrease in the wave heights took place until about 1970, and considerable decadal variations have occurred since then. The coherence between annual average wave heights at different locations was lost at the end of the 1980s. A rotation of the usual wave approach direction by almost 90° was identified at one location. We then coupled this data with a reconstruction of wave fields and wave-driven sediment transport for 1970 to 2007. The reconstruction is based on adjusted geostrophic winds from the Swedish Meteorological and Hydrological Institute. The simulated net potential sediment transport along the eastern coast of the sea reveals a major change at the end of the 1980s. This change is associated with an abrupt turn of the geostrophic air-flow over the southern Baltic Sea by ∼40° around 1987. This change may serve as an alternative explanation for a radical decrease in the frequency of major inflows of saltier, oxygen-rich water into the Baltic Sea since the mid-1980s. © The authors 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116437
Appears in Collections: 气候减缓与适应
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Recommended Citation:
Soomere T.,Bishop S.R.,Viška M.,et al. An abrupt change in winds that may radically affect the coasts and deep sections of the Baltic Sea[J]. Climate Research,2015-01-01,62(2)