Characteristics of Current and Electric Field Signatures during the Initial Stage in Upward Lightning at the Gaisberg Tower

Naomi Watanabe1, Amitabh Nag2,3, Gerhard Diendorfer4, Hannes Pichler4, Wolfgang Schulz4 and Hamid K Rassoul3, (1)Florida Gulf Coast University, Department of Physics, Fort Myers, United States, (2)Los Alamos National Laboratory, Los Alamos, United States, (3)Florida Institute of Technology, Department of Aerospace, Physics and Space Sciences, Melbourne, United States, (4)OVE Service GmbH, Dept. ALDIS A-1190, ALDIS, Vienna, Austria