An unexpected pattern of distinct weekly periodicities in climatological variables in Germany
An unexpected pattern of distinct weekly periodicities in climatological variables in Germany
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DOI：
10.1029/2006gl028559
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发表时间：
2007-02-15
影响因子：
5.2
通讯作者：
Vogel, Bernhard
中科院分区：
文献类型：
--
作者：
Baeumer, Dominique;Vogel, Bernhard
本文对1991 - 2005年12个符合WMO标准的德国气象站的数据进行了统计分析。这些气象站在气象学和污染情况方面代表了不同地区的气候条件。对于所有站点的平均数据，我们发现了许多变量的显著周周期性，如温度、日温度范围、日照时数、云量、降水和降水频率。不仅是在拥挤的城市地区，而且在海拔2960 m的阿尔卑斯祖格斯皮泽山等偏远地区的观测站数据也表现出明显的周同相循环。这些周周期不能完全用局部污染效应或局部热排放来解释。我们倾向于这样的假设，即人为的周排放周期和随后的气溶胶周期在更大的尺度上与大气动力学相互作用，导致在大气周期谱中自然存在的7天周期的强迫。
Statistical analyses of data from 12 German meteorological stations meeting WMO standards in the period 1991 - 2005 are presented. These stations represent different local climate conditions in terms of both meteorology and pollution situation. For the average over data of all stations, we identified significant weekly periodicities in many variables such as temperature, daily temperature range, sunshine duration, cloud amount, precipitation, and precipitation frequency. Not only data of stations situated in congested urban areas, but also data of remote stations as e. g. on Mount Zugspitze 2960 m above sea level in the Alps showed significant in-phase weekly cycles. These weekly periodicities cannot be explained completely by local pollution effects or local heat emissions. We tend towards the hypothesis that the anthropogenic weekly emission cycle and the subsequent aerosol cycle interact with the atmospheric dynamics on a larger scale which leads to a forcing of a naturally existing 7-day period among the spectrum of atmospheric periods.