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中文摘要：
利用“中国强沙尘暴序列及其支撑数据集”，分别以“站日”和“站时”为计算单位，建立了中国50a（1958—2007年）沙尘暴时间序列，分析了两个序列的关系，并比较了两者所反映出的沙尘暴时空变化特征。结果表明，站日和站时序列总体变化趋势比较一致，但细节有所差别，有时会影响某些结论。在反映沙尘暴的时间变化和空间分布时，两者存在明显的差异。
英文摘要：
Base on observation data from meteorological stations, two time series of sand-dust storm （SDS） occur- ring in China during 1958 -2007 were established by using the station-day and station -hour as units, respective- ly. The relationships between the two time-series were investigated and the characteristics of the temporal and spa- tial variations of SDS were analyzed and compared. The results indicate that the overall variation trends of SDS sta- tion - day and station-hour are consistent, but there are differences in details which may influence some conclusions sometimes. The station-day differs from the station-hour obviously in reflection of the temporal and spatial variations of SDS.
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