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  • 关键词:Qinghai-Tibet Plateau, M changes, MP changes, K changes
    摘要:

    The M change characteristics in continuing current process of negative cloud-to-ground lightning discharge and artificially triggering lightning discharge are comparatively analyzed using the synchronous data of opt...

    发表年度:2013
  • 关键词:lightning signal, fractal dimension, support vector machine, automatic recognition
    摘要:

    By analyzing the fractal feature of 120 cloud-to-ground lightning signals and 77 intracloud lightning signals obtained by the fast antenna system in Qinghai area during the summer of 2009, the results show fractal d...

    发表年度:2013
  • 关键词:atmospheric surface layer (ASL), turbulent transport, Latent heat flux, vertical velocity, cross-coupling
    摘要:

    According to the cross coupling theorem of atmospheric turbulence, latent heat flux comprises two components, a vertical humidity gradient flux and a coupling flux of vertical velocity. In this paper, observational ...

    发表年度:2013
  • 关键词:Transport pathway, potential source areas, WRF-HYSPLIT model, Cluster analysis
    摘要:

    Air pollution in urban areas is related not only to emission sources but also to atmospheric dispersion and transport conditions. Knowledge of pollutant transport pathways, potential source regions and their relativ...

    发表年度:2013
  • 关键词:negative ground flashes, long continuing current process, overlap and progressive method
    摘要:

    This paper presents a new overlap and progressive method using either a one-point charge model or a point dipole model for studying the electric field change data of lightning and tests the suitability of the propos...

    发表年度:2013
  • 关键词:粗糙度长度, 地表温度, 感热通量, 荒漠地表
    摘要:

    利用2005年进行的"绿洲系统能量与水分循环补充观测试验"第3阶段的观测资料计算了金塔试验区内戈壁和沙漠的动力学和热力学粗糙度长度,沙漠和戈壁的动力粗糙度长度分别为1.81×10-3 m和1.64×10-3 m,与黑河试验结果基本一致...

    发表年度:2013