PhD Dissertation Defense

November 15, 2:00pm - 5:00pm
Mānoa Campus, POST Building, Room 414

Thomas J. Dunn
Meteorology, PhD Candidate
Department of Meteorology
School of Ocean and Earth Science & Technology

PhD Thesis Title:
Weather and Dispersion Modeling of the Fukushima Daiichi Nuclear Power Station Accident


The atmospheric and radiological consequences of the accident at the Fukushima Daiichi nuclear power station were investigated for the period 00 UTC 11 March to 00 UTC 17 March, 2011. Coupled weather and dispersion model simulations of the accident were performed using two independent source terms, which differed in the emission rate and height and in the total amount of the radioactive material released. The results show significant differences in the distribution of the cumulative surface deposition of 137Cs due to wet and dry removal processes. Dry deposition was the dominant removal process in all simulations, accounting for the majority of surface contamination. A comparison of 137Cs predicted by the modeling system with observations of surface-deposited gamma radiation obtained from aircraft showed reasonable agreement in surface contamination patterns during the fair weather phase of the accident due to dry deposition. During the wet phase the pattern is not as well predicted.  It is suggested that this discrepancy is because of differences between the model predicted and observed precipitation distributions.

Event Sponsor
SOEST Meteorology, Mānoa Campus

More Information

Share by email

Friday, November 15

Makahiki Imu Mixer
Mānoa Campus, Kumuola Foundation lo'i in Manoa Valley
The Wellness Center - Fitness Class Schedule
Maui Campus, Pilina Bldg., Wellness Center
History Final Oral
Mānoa Campus, Sakamaki A201
Hawaiian Ferns 201
Mānoa Campus, 3860 Manoa Rd.
Hawaiian Studies MA Program Informational Session
Mānoa Campus, QLCSS 104
2013 Loloma award recipients
Mānoa Campus, Tokioka room Moore 319
Political Science Final Oral
Mānoa Campus, Saunders 617
Tropical Plant and Soil Sciences Final Oral
Mānoa Campus, St. John 106
Fall Native Hawaiian Scholar Brown Bag
Mānoa Campus, Hālau ʻO Haumea-Kamakakūokalani Center for Hawaiian Studies
Graduate School Informational Session
Mānoa Campus, Kamakakuokalani 211
Meteorology Final Oral
Mānoa Campus, POST 414
PhD Dissertation Defense
Mānoa Campus, POST Building, Room 414
Aesthetics of Tension: Becoming Anarchist
Mānoa Campus, Saunders 624
EALL Talk Series
Mānoa Campus, Moore 258
Peace Education
Mānoa Campus, Wist Hall 133 (CCC)
Wiki Slideshows on Japan Powered by PechaKucha
Mānoa Campus, Tokioka Room (Moore Hall 319)
Rockin the Roots Concert
Mānoa Campus, Hemenway Courtyard
Dance Anniversary: Look Back Move Forward
Mānoa Campus, Kennedy Theatre Mainstage
Singles Table Tennis Tournament
Mānoa Campus, Studio 3