Development of the hybrid electric field meter for simultaneous measuring of vertical and horizontal electric fields of the thundercloud

This correspondence presents a development of hybrid electric field meter methodology. This particular field meter can simultaneously measure the vertical and horizontal electric fields of the thundercloud. The additional horizontal electric field provides the useful information of the direction of thunderclouds. The capability of the apparatus was experimentally evaluated and has been confirmed that it has the satisfactory sensitivity to both components of electric field. Additionally, an instance of observation results of the cloud-to-ground and ground-to-cloud lightning discharge has been presented.