The CS110 electric field meter produced by the Campbell Scientific Company is used to measure the vertical component of the electric field (Ez) at a sampling frequency of 1 Hz. The CS110 employs a reciprocating shutter, not the traditional rotating vane field mill, enhancing low-frequency error performance. The shutter is linked to ground potential via a stainless-steel strap operating below its fatigue limit, ensuring a highly reliable connection. This design allows for a zero-field reference, enabling measurement and correction for electronic offset voltages, contact potentials, and leakage currents in each measurement. The CS110 features circuitry to measure and compensate for insulator leakage currents, preventing measurement errors caused by fouled insulators due to surface contamination. It is placed on top of the 2-meter-high mast  attached to the 1-meter-high heavy tripod. The station is permanently located on the Mount Hermon on the flat hill surrounded by deep valleys. The atmospheric electric field, sometimes referred to as the potential gradient (PG), is one of several observable parameters used for studying the global electrical circuit (GEC). Prior studies carried out at the site have shown the behavior of the PG during both fair weather conditions and snow storms.

 

The data can be found here and on the corresponding page of the GLOCAEM project (GLObal Coordination of Atmospheric Electricity Measurements).

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References:

Yaniv, R., Yair, Y., Price, C., Mkrtchyan, H., Lynn, B., & Reymers, A. (2017). Ground-based measurements of the vertical E-field in mountainous regions and the “Austausch” effect. Atmospheric Research, 189, 127-133.‏

Yair, Y., Reuveni, Y., Katz, S., Price, C., & Yaniv, R. (2019). Strong electric fields observed during snow storms on Mt. Hermon, Israel. Atmospheric Research, 215, 208-213.

Nicoll, K. A., Harrison, R. G., Barta, V., Bor, J., Brugge, R., Chillingarian, A., ... & Yaniv, R. (2019). A global atmospheric electricity monitoring network for climate and geophysical research. Journal of atmospheric and solar-terrestrial physics, 184, 18-29.‏