Sea surface height variations in the Mindanao Dome region in response to the northern tropical Pacific winds

Dan Song; Dunxin Hu; Fangguo Zhai

doi:10.1007/s00343-012-1155-2

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Sea surface height variations in the Mindanao Dome region in response to the northern tropical Pacific winds

Updated：2023-05-16

- Sea surface height variations in the Mindanao Dome region in response to the northern tropical Pacific winds
- Journal of Oceanology and Limnology Vol. 30, Issue 4, Pages: 675-683(2012)
- Affiliations：
  
  1. Key Laboratory of Ocean Circulation and Waves Chinese Academy of Sciences
  2. Institute of Oceanology Chinese Academy of Sciences
  3. Graduate University of Chinese Academy of Sciences
- Author bio：
- Funds：
- DOI：10.1007/s00343-012-1155-2
  CLC：
- Online First：02 July 2012，
  
  Published：2012
- Accepted：
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Song, D., Hu, D. & Zhai, F. Sea surface height variations in the Mindanao Dome region in response to the northern tropical Pacific winds., Chin. J. Ocean. Limnol. 30, 675–683 (2012). https://doi.org/10.1007/s00343-012-1155-2
DOI：

Song, D., Hu, D. & Zhai, F. Sea surface height variations in the Mindanao Dome region in response to the northern tropical Pacific winds., Chin. J. Ocean. Limnol. 30, 675–683 (2012). https://doi.org/10.1007/s00343-012-1155-2 DOI：

摘要

Abstract

Sea surface height (SSH) variability in the Mindanao Dome (MD) region is found to be one of the strong variations in the northern Pacific. It is only weaker than that in the Kuroshio Extension area

and is comparable to that in the North Pacific Subtropical Countercurrent region. Based on a 1.5-layer reduced gravity model

we analyzed SSH variations in this region and their responses to northern tropical Pacific winds. The average SSH anomaly in the region varies mainly on a seasonal scale

with significant periods of 0.5 and 1 year

ENSO time scale 2–7 years

and time scale in excess of 8 years. Annual and long-term variabilities are comparably stronger. These variations are essentially a response to the northern tropical Pacific winds. On seasonal and ENSO time scales

they are mainly caused by wind anomalies east of the region

which generate westward-propagating

long Rossby waves. On time scales longer than 8 years

they are mostly induced by local Ekman pumping. Long-term SSH variations in the MD region and their responses to local winds are examined and discussed for the first time.

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Keywords

references

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