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Historical sea level reconstruction - monthly time series, 1950-2009 - 1 degree resolution

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Research Data Australia2024-12-14 收录
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https://researchdata.edu.au/historical-sea-level-degree-resolution/3378033
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资源简介:
Historical sea level reconstruction by merging tide gauge measurements with altimeter measurements, presented in monthly time steps between January 1950 and December 2009.\n\nAttributes recorded: \n- Latitude & Longitude (1 degree resolution); \n- Year, month; \n- Number of gauges at each time step; \n- Global Mean Sea Level error (mm); \n- Sea Surface Height (mm). \n\nFormat: NetCDF. \nSize: 65MB \nNotes: no IB correction, Mitrovica GIA, seasonal signal removed.\nLineage: Near-global satellite altimetry data since 1993 were used to derive global sea level Empirical Orthogonal Functions (EOFs), whose amplitudes were determined with historical tide gauge records. Then the global distribution of sea level is reconstructed as the sum of EOFs.

本数据集通过融合验潮仪观测与卫星高度计观测数据,重建得到1950年1月至2009年12月间的逐月海平面变化序列。 记录的属性包括: - 经纬度(分辨率为1度); - 年份、月份; - 各时间步长内的验潮仪数量; - 全球平均海平面误差(单位:毫米); - 海面高度(单位:毫米)。 数据格式为NetCDF,大小为65MB。备注:未进行IB校正,采用Mitrovica冰川均衡调整(Glacial Isostatic Adjustment,GIA)模型,已去除季节信号。 数据生成溯源:采用1993年以来的近全球卫星高度计数据推导得到全球海平面经验正交函数(Empirical Orthogonal Functions,EOFs),其振幅通过历史验潮仪记录确定;随后将经验正交函数叠加,重建得到全球海平面的空间分布。
提供机构:
Commonwealth Scientific and Industrial Research Organisation
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