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Journal of Oceanology and Limnology

, Volume 37, Issue 2, pp 486–497 | Cite as

Coastal sea level variability in the Bohai Bay: influence of atmospheric forcing and prediction

  • Xianqing Lü
  • Daosheng WangEmail author
  • Bing Yan
  • Hua Yang
Physics
  • 24 Downloads

Abstract

The sea level variabilities, especially the atmosphere-driven sea level variabilities, which are different in studies on diverse areas and timescales, need to be further documented in the Bohai Bay. Coastal sea level data and coincident meteorological data collected hourly at two observation stations (E1 and E2) in the Bohai Bay, which is a typical semi-enclosed coastal sea in China, are analyzed for the period from 19 August 2014 to 18 November 2014. The sub-sampled low-pass (<0.8 cpd) sea levels (SLSLs) at E1 and E2 are almost the same as each other, while the winds are not. On the whole, SLSLs at E1 and E2 are dominantly influenced by the across-shore wind; in detail, the dominant wind orientation at E1 is 65° measured clockwise from north, and SLSL at E2 is significantly influenced by the sub-sampled wind (SW) at 55°. Regression of SLSL onto the corresponding SW in dominant orientation and the atmospheric pressure is used to predict SLSL, which make the frequency of occurrences when the predicted total sea level is within 0.15 m from the observed values increase to 66.03% and 58.08% at E1 and E2 from original 36.71% and 34.80% without using it, respectively. The results indicate that for the prediction of the total sea level variability in the coastal shallow waters, the SLSL influenced by the atmospheric forcing, including local wind and atmospheric pressure, can be predicted using the multivariable linear regression model.

Keyword

coastal sea level atmospheric forcing Bohai Bay prediction 

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Copyright information

© Chinese Society for Oceanology and Limnology, Science Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Xianqing Lü
    • 1
    • 2
  • Daosheng Wang
    • 2
    • 3
    • 4
    Email author
  • Bing Yan
    • 1
  • Hua Yang
    • 1
  1. 1.Key Laboratory of Engineering Sediment of the Ministry of Transport / National Engineering Laboratory for Port Hydraulic Construction TechnologyTianjin Research Institute for Water Transport Engineering, M.O.T.TianjinChina
  2. 2.Physical Oceanography Laboratory/CIMSTOcean University of China and Qingdao National Laboratory for Marine Science and TechnologyQingdaoChina
  3. 3.College of Marine Science and TechnologyChina University of GeosciencesWuhanChina
  4. 4.Shenzhen Research InstituteChina University of GeosciencesShenzhenChina

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