Comparison of in situ bottom pressure data with GRACE gravimetry in the Crozet‐Kerguelen region
Comparison of in situ bottom pressure data with GRACE gravimetry in the Crozet‐Kerguelen region
复制标题
克罗泽-凯尔盖朗地区原位底部压力数据与 GRACE 重力测量的比较
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
C. Hughes
中科院分区：
文献类型：
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作者：
R. Rietbroek;P. Legrand;B. Wouters;J. Lemoine;G. Ramillien;C. Hughes
将克罗泽群岛和科尔盖伦群岛之间的两个深海海底压力记录(BPR)时间序列与GRACE(重力恢复和气候实验)等效水高进行了比较。对四个时间序列进行了相关性分析：1)克罗泽群岛相当水位的月平均值，2)克尔盖伦群岛附近的月平均值，3)前两个序列的平均值，以及4)两个地点之间的地转输送差异。我们发现，平滑的Grace解与BPR数据具有很强的相关性，相关系数在0.7-0.8量级。因此，GRACE测量了该地区真实的海洋质量变化。
Two time series of deep ocean bottom pressure records (BPRs) in between the Crozet Islands and Kerguelen are compared with GRACE (Gravity Recovery And Climate Experiment) equivalent water heights. An analysis of the correlation is performed for four time series: 1) monthly averages of the equivalent water height at the Crozet Islands, 2) the same near the Kerguelen Islands, 3) the mean of the two preceding series and 4) the difference between the two locations expressed in terms of geostrophic transport. We find that smoothed GRACE solutions are strongly correlated with the BPR data with correlation coefficients in the order of 0.7–0.8. Consequently GRACE measures real oceanic mass variations in this region.