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海平面季节变化及比容贡献
引用本文:杨春辉,郎咸瑞,许春艳,王振峰.海平面季节变化及比容贡献[J].海洋测绘,2011,31(1):47-49.
作者姓名:杨春辉  郎咸瑞  许春艳  王振峰
作者单位:东海舰队水文气象中心,浙江,宁波,315122
摘    要:比容模型计算的带状平均海平面高度异常变化与高度计观测的海平面异常相符的很好,在南北半球都显示了较强的季节信号。热膨胀对大尺度平均海平面季节变化起了很大作用,尤其当对纬度带状区域取平均时,在某些纬度带比容的贡献率达80%以上,甚至其决定的高度相当于或超过了高度计的观测。而在高纬和低纬地区,振幅和相位都有较大的差别。同时通过比容模型计算的3月份海面高度异常在全球大部分区域也可以很好地表现出TOPEX/Poseidon、Jason-1的观测。

关 键 词:海平面季节变化  高度计  SODA  比容

Seasonal Sea Level Changes and the Steric Contribution
YANG Chun-hui,LANG Xian-rui,XU Chun-yan,WANG Zhen-feng.Seasonal Sea Level Changes and the Steric Contribution[J].Hydrographic Surveying and Charting,2011,31(1):47-49.
Authors:YANG Chun-hui  LANG Xian-rui  XU Chun-yan  WANG Zhen-feng
Institution:YANG Chun-hui,LANG Xian-rui,XU Chun-yan,WANG Zhen-feng(Hydrological and Meteorological Center,The Navy Fleet of the East Sea,Ningbo,Zhejiang,315122)
Abstract:The band mean sea level anomaly changes calculated by the steric model match altimeter observations very well,showing a strong seasonal signal in the northern and southern hemispheres.Thermal expansion plays a major role in seasonal variation of large-scale mean sea level,especially when averaging on the latitude strip area,the contribution of the steric can be more than 80%,and even be equal to or more than altimeter observations in certain latitudes.While at high latitudes and lower latitudes,the amplitud...
Keywords:seasonal sea level change  altimeter  SODA  steric  
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