Fair weather criteria for atmospheric electricity measurements
Fair weather criteria for atmospheric electricity measurements
复制标题
DOI：
10.1016/j.jastp.2018.07.008
复制
发表时间：
2018-11-01
影响因子：
1.9
通讯作者：
Nicoll, K. A.
中科院分区：
文献类型：
--
作者：
Harrison, R. G.;Nicoll, K. A.
全球大气电路将空间环境与地面天气联系起来，大多数情况下是利用晴天地面大气电测量来研究的。然而，检索全局电路信息需要选择“好天气”数据，以避免局部气象干扰。这里提出的研究结果挑战的适用性长期定义的电公平的天气大气条件。根据详细的新测量和理论，描述了晴朗天气大气电条件的三个改进要求（FW 1至FW 3）。这些措施包括：（FW 1）在超过2公里的目视范围内没有水凝物、气溶胶和霾，（FW 2）可忽略的积云和云底低于1500米的大范围层云，以及（FW 3）地面风速在1 m s（-1）和8 m s（-1）之间。给出了确定这些要求的自动和手动测量方法。通过在目前运行的许多测量站点应用这些标准，将减少气象变化带来的噪音，从而产生更能代表全球电路的数据。
The global atmospheric electric circuit, which links the space environment with terrestrial weather, has mostly been investigated using fair-weather surface atmospheric electricity measurements. Retrieving global circuit information, however, requires the selection of "fair weather" data, to avoid local meteorological disturbances. The research results presented here challenge the applicability of long-standing definitions of electrically fair weather atmospheric conditions. From detailed new measurements and theory, three improved requirements (FW1 to FW3) for fair weather atmospheric electricity conditions are described. These are: (FW1) absence of hydrometeors, aerosol and haze, as apparent through the visual range exceeding 2 km, (FW2) negligible cumuliform cloud and no extensive stratus cloud with cloud base below 1500 m, and (FW3) surface wind speed between 1 m s(-1) and 8 m s(-1). Automatic and manual measurement approaches to identifying these requirements are given. Through applying these criteria at the many measurements sites now operating, the noise from meteorological variability will be reduced, leading to data more representative of the global electric circuit.