中文摘要：

在大气的边界层，特别在大风时期期间，协调结构是明显的并且与地面与空气的直接相互作用有关集中。在这份报纸，我们在西北 Gansu 在灰尘天气期间使用了观察数据学习协调结构和他们的异常散开。在大气的边界层的结构包括了狂暴的变化和阵阵猛急的风骚乱，并且能作为批评事件被表示。他们的分数维的尺寸被等待时间的复杂索引表示。尽管复杂索引能显示系统的能力产生协调结构，它在标记批评事件的阀值上有强壮的依赖。因此，连续时间随机散步方法被用来分析协调结构。协调结构的异常散开的可伸缩的法律被获得，并且放大显示了不同结构的散开的能力的代表 H 的散开被分析。代表随着被速度和高度影响的结构规模变化了。在小规模，它是几乎各向同性、逍遥法外的规模，协调结构是明显的，散开是异常的。

英文摘要：

In the atmospheric boundary layer, especially during strong wind period, the coherent structures are obvious and related to the direct interaction of the air masses with the ground. In this paper, we used the observation data during dust weather in Northwest Gansu to study the coherent structure and their ＂anomalous diffusion＂. The structures in the atmospheric boundary layer included turbulent fluctuations and gusty wind disturbances, and could be denoted as ＂critical events＂. Their fractal dimensions were expressed by the complex index μ of waiting times. Although the complex index can indicate the ability of the system to generate coherent structures, it has a strong dependence on the threshold marking the ＂critical events＂. Hence, the continuous time random walk method was used to analyze the coherent structures. The scaling law of anomalous diffusion of coherent structures was obtained, and the diffusion scaling exponent H that indicated the ability of diffusion of different structures was analyzed. The exponents changed with structure scales which were affected by velocities and heights. At small scales, it was almost isotropic, and at large scales, the coherent structures were obvious and the diffusion was anomalous.