PUBLICATIONS Geophysical Research Letters RESEARCH LETTER On the interaction of Tropical Cyclone Flossie 10.1002/2014GL060033 and emissions from Hawaii’s Kilauea volcano Key Points: Andre Pattantyus1 and Steven Businger1 • Volcanic emissions are shown to fi enhance storm electri cation 1Department of Meteorology, University of Hawai‘iatMānoa, Honolulu, Hawaii, USA • SO2 emissions oxidize to sulfates which cause aerosol loading • Aerosol-TC interactions are simulated fi with atmospheric dispersion model Abstract On 29 July 2013, Tropical Storm Flossie passed the Hawaiian Islands. This is the rst interaction between an active, vigorously degassing volcano and a tropical cyclone captured by a vog (volcanic smog) dispersion model run over the Hawaiian Islands since operational simulations began in 2010, providing a unique opportunity to analyze the influence of robust volcanic emissions entrained into a tropical cyclone. Correspondence to: A. Pattantyus, Results from the vog dispersion model are compared with Geostationary Operational Environmental Satellite
[email protected] observations, lightning data from Vaisala’s Global Lightning Dataset (GLD360), and the National Weather Service Weather Surveillance Radar, 1988 Dual-Polarmetric Doppler radar to investigate the effect of volcanic Citation: emissions on the storm. Observations and model results suggest that aerosol loading resulted in deep Pattantyus, A., and S. Businger (2014), convection and glaciation which in turn enhanced charge separation and promoted active lightning. On the interaction of Tropical Cyclone Flossie and emissions from Hawaii’s Kilauea volcano, Geophys. Res. Lett., 41, doi:10.1002/2014GL060033. 1. Introduction Received 26 MAR 2014 The Kilauea volcano has been continuously erupting from the Pu’u ‘O’o vent since 1983, emitting large Accepted 21 MAY 2014 amounts of sulfur dioxide (SO2) (Figure 1).