PUFF Model Prediction of Volcanic Ash Plume Dispersal for Sakurajima Using MP Radar Observation
1
Center for Computational Sciences, University of Tsukuba, Tsukuba 305-8577, Japan
2
Sakurajima Volcano Research Center, DPRC, Kyoto University, Kagoshima 841-1419, Japan
*
Author to whom correspondence should be addressed.
Atmosphere 2020, 11(11), 1240; https://doi.org/10.3390/atmos11111240
Received: 13 October 2020 / Revised: 13 November 2020 / Accepted: 16 November 2020 / Published: 18 November 2020
(This article belongs to the Special Issue Monitoring and Modelling Volcanic Ash Transport and Deposition)
In this study, a real-time volcanic ash plume prediction by the PUFF system was applied to the Sakurajima volcano (which erupted at 17:24 Japan Standard Time (JST) on 8 November 2019), using the direct observation of the multi-parameter (MP) radar data installed at the Sakurajima Volcano Research Center. The MP radar showed a plume height of 5500 m a.s.l. around the volcano. The height was higher than the 4000 m by the PUFF system, but was lower than the observational report of 6500 m by the Japan Meteorological Agency in Kagoshima. In this study, ash particles by the MP radar observation were assimilated to the running PUFF system operated by the real-time emission rate and plume height, since the radar provides accurate plume height. According to the simulation results, the model prediction has been improved in the shape of the ash cloud with accurate plume top by the new MP radar observation. The plume top is corrected from 4000 m to 5500 m a.s.l., and the three-dimensional (3D) ash dispersal agrees with the observation. It was demonstrated by this study that the direct observation of MP radar obviously improved the model prediction, and enhanced the reliability of the prediction model.
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Keywords:
PUFF model; ash dispersion; tracking model; Sakurajima volcano; MP radar
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MDPI and ACS Style
Tanaka, H.L.; Nakamichi, H.; Iguchi, M. PUFF Model Prediction of Volcanic Ash Plume Dispersal for Sakurajima Using MP Radar Observation. Atmosphere 2020, 11, 1240. https://doi.org/10.3390/atmos11111240
AMA Style
Tanaka HL, Nakamichi H, Iguchi M. PUFF Model Prediction of Volcanic Ash Plume Dispersal for Sakurajima Using MP Radar Observation. Atmosphere. 2020; 11(11):1240. https://doi.org/10.3390/atmos11111240
Chicago/Turabian StyleTanaka, Hiroshi L.; Nakamichi, Haruhisa; Iguchi, Masato. 2020. "PUFF Model Prediction of Volcanic Ash Plume Dispersal for Sakurajima Using MP Radar Observation" Atmosphere 11, no. 11: 1240. https://doi.org/10.3390/atmos11111240
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