Abstract Three extensive global wind speed and wave height datasets (altimeter, radiometer, model reanalysis) are analysed to investigate the global wind speed and wave height climate. Despite the fact that these datasets have all been carefully calibrated, they show systematic differences in wind speed. At high latitudes both altimeter and radiometer winds are biased high compared to buoy measurements. Altimeter winds are more impacted than radiometer winds. Based on the assumptions that altimeter winds respond primarily to the surface wave spectrum mean squared slope and radiometer winds respond primarily to the surface wave spectrum dissipation, it is shown that the observed differences are a result of changes in atmospheric stability. An analysis which accounts for differences in air and water temperatures describes the observed differences with surprising accuracy. Based on this analysis corrections to both altimeter and radiometer winds are proposed which account for the influence of atmospheric stability. It is also shown that satellites preferentially measure at particular local times of day. As winds have a diurnal variation in magnitude, this preferential measurement time can also bias statistical values obtained from such satellite systems.

中文翻译：

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从卫星观测确定全球海洋风浪气候

摘要 分析了三个广泛的全球风速和波高数据集（高度计、辐射计、模型再分析）以研究全球风速和波高气候。尽管这些数据集都经过仔细校准，但它们显示出风速的系统差异。在高纬度地区，与浮标测量相比，高度计和辐射计风都偏高。高度计风比辐射计风受到的影响更大。基于高度计风主要响应表面波频谱均方斜率和辐射计风主要响应表面波频谱耗散的假设，表明观测到的差异是大气稳定性变化的结果。考虑到空气和水温差异的分析以惊人的准确度描述了观察到的差异。在此分析的基础上，提出了对高度计和辐射计风的修正，以考虑大气稳定性的影响。还表明卫星优先在一天中的特定本地时间进行测量。由于风在大小上有昼夜变化，这种优先的测量时间也会使从此类卫星系统获得的统计值产生偏差。