Department. of Environmental Engineering, Democritus University of Thrace, 67100 Xanthi, Greece.
Also at ATHENA Research and Innovation Center in Information, Communication and Knowledge Technologies, ISLP Xanthi Branch, 67100, Xanthi, Greece.
Int J Biometeorol. 2021 Jan;65(1):93-105. doi: 10.1007/s00484-020-01923-y. Epub 2020 Apr 30.
We present an analysis of the impact of circulation weather types (CT) on a factor that might influence biological systems and the human condition, the electric state of the atmosphere. We present results on the influence of CT to the magnitude, the direction (positive or negative), the fluctuation magnitude, and the short-term peaks of the atmospheric electric field (potential gradient, PG), using data from a station in Greece. CTs with high vorticity centers over Greece are associated with high positive and negative excursions of the PG, higher PG variability, and rain events. CTs with thinner 850-500 hPa layer are associated with higher daily mean values of fair-weather PG. We also examine the influence of CT on the frequency and amplitude of the naturally occurring extremely low-frequency electric field fluctuations known as Schumann resonances (SR) using data from a station in Hungary. The first and second mode SR frequencies are increased during CTs associated with higher 500 hPa geopotential heights and higher 850-500 hPa layer thickness. This hints to a lower-upper atmosphere coupling. So, CTs not only influence the general temperature and humidity conditions to which the biosphere is exposed, but they also affect its exposure to atmospheric electric fields.
我们分析了环流天气型（CT）对一个可能影响生物系统和人类状况的因素的影响，即大气的电状态。我们使用来自希腊一个站的数据，展示了 CT 对大气电场（位势梯度，PG）幅度、方向（正或负）、波动幅度和短期峰值的影响。在希腊上空具有高涡度中心的 CT 与 PG 的高正值和负值偏移、更高的 PG 可变性和降雨事件有关。850-500 hPa 层较薄的 CT 与更高的每日平均晴天 PG 值有关。我们还使用来自匈牙利一个站的数据，检查了 CT 对称为舒曼共振（SR）的自然发生的极低频率电场波动的频率和幅度的影响。第一和第二模式 SR 频率在与较高的 500 hPa 位势高度和较高的 850-500 hPa 层厚度相关的 CT 期间增加。这暗示了低层-高层大气的耦合。因此，CT 不仅影响生物界所暴露的一般温度和湿度条件，还影响其对大气电场的暴露。
