Local, regional, and global ionospheric disturbances following the Tonga volcanic eruption

Shunrong Zhang1, Ercha Aa1, Juha Vierinen2, Phillip Erickson1, Larisa P Goncharenko3, Anthea Coster4, Wenbin Wang5, Liying Qian5, Brian J Harding6, William E Rideout1, Andres Spicher2, Richard Eastes7 and Thomas J Immel8, (1)MIT Haystack Observatory, Westford, United States, (2)The Arctic University of Norway, Department of Physics and Technology, Tromsø, Norway, (3)MIT, Pepperell, United States, (4)MIT Haystack Observatory, Westford, MA, United States, (5)National Center for Atmospheric Research, High Altitude Observatory, Boulder, United States, (6)University of California, Berkeley, Space Sciences Laboratory, Berkeley, United States, (7)University of Colorado at Boulder, Laboratory for Atmospheric and Space Physics, Boulder, United States, (8)University of California Berkeley, Space Sciences Laboratory, Berkeley, CA, United States