Altimeter sea state bias: A new look at global range error estimates
Altimeter sea state bias: A new look at global range error estimates
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DOI：
10.1029/2001gl013346
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发表时间：
2001-10
影响因子：
5.2
通讯作者：
B. Chapron;D. Vandemark;T. Elfouhaily;D. Thompson;P. Gaspar;S. Labroue
中科院分区：
文献类型：
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作者：
B. Chapron;D. Vandemark;T. Elfouhaily;D. Thompson;P. Gaspar;S. Labroue
分析了由TOPEX高度计导出的非参数SS B模型，给出了一种新的分解形式SS B =bHs + f（σo），其中B为0.03，雷达散射截面函数（σo）是位于常规无量纲SS B模型之外的绝对二阶距离修正。在主导bHs项的预期变化及其与长波轨道速度和较短尺度的斜率方差的关系进行了讨论，使用最近的EM偏置理论的物理动机重述。在当前理论中被忽略的陡峭近破波的几何形状被引用作为观察到的Hs独立SSB分量的一个合理解释。
A nonparametric SSB model, derived using the TOPEX altimeter, is analyzed to show a new decomposition of the form SSB=bHs + f(σo), where b is 0.03 and the function of radar cross section (σo) is an absolute second‐order range correction residing outside the conventional nondimensional SSB model. Expected variability in the dominant bHs term and its ties to the long wave orbital velocity and shorter‐scale slope variances are discussed using a physically‐motivated restatement of recent EM bias theory. The geometry of steep near‐breaking waves, neglected within current theory, is invoked as one plausible explanation for the observed Hs‐independent SSB component.