Dwyer, Joseph

Professor and Head
Physics and Space Sciences

Educational Background

B.S. University of California-Irvine
M.S. University of Chicago
Ph.D. University of Chicago

Recognition & Awards

President’s Award for University Excellence 2010

Faculty Excellence Award in Research 2002-2003

NSF CAREER Award, 2002

The University of Chicago, Enrico Fermi Institute Nathan Sugarman Award for Excellence in Research, 1991

 

 

Current Courses

Physics of Atmospheres

Senior Seminar

 

Professional Experience

Professor, Department of Physics and Space Sciences, Florida Institute of Technology, (2006-present)

Associate professor, Department of Physics and Space Sciences, Florida Institute of Technology, (2003-2006)

Assistant professor, Department of Physics and Space Sciences, Florida Institute of Technology, (2000-2003)

Assistant research scientist, Department of Physics, University of Maryland (1998-2000)

Lecturer, Department of Physics, University of Maryland (1999)

Research associate, Department of Physics, University of Maryland (1995-1998)

Postdoc. research scientist, Department of Physics, Columbia University (1993-1995)

Research assistant, Department of Physics, University of Chicago (1987-1993)

Teaching assistant, Department of Physics, University of Chicago (1986-1988)

Additional Duties

Faculty Senate President 2010-2011

President-Elect Atmospheric and Space Electricity AGU

Current Research

Lightning physics

X-ray emissions from lightning

Runaway breakdown of air

UF/Florida Tech International Center for Lightning Research and Testing at Camp Blanding FL

Terrestrial gamma-ray flashes (TGFs)

X-rays from laboratory sparks

Selected Publications

Dwyer, J. R., The relativistic feedback discharge model of terrestrial gamma ray flashes, J. Geophys. Res., 117, A02308, doi:10.1029/2011JA017160, 2012.

Dwyer, J. R., M. Schaal, H. K. Rassoul, M. A. Uman, D. M. Jordan, D. Hill and H. K. Rassoul. High-speed X-ray Images of Triggered Lightning Dart Leaders, J. Geophys. Res., 116, 2011.

Dwyer, J. R., and L. Babich, Low-energy electron production by relativistic runaway electron avalanches in air, J. Geophys. Res., 116, doi:10.1029/2011JA016494, 2011.

Dwyer, J. R., Diffusion of relativistic runaway electrons and implications for lightning initiation, J. Geophys. Res., doi:10.1029/2009JA014504, 2010.

Dwyer, J. R., D. M. Smith, M. A. Uman, Z. Saleh, B. Grefenstette, B. Hazelton, and H. K. Rassoul, Estimation of the fluence of high-energy electron bursts produced by thunderclouds and the resulting radiation doses received in aircraft, J. Geophys. Res.,doi:10.1029/2009JD012039, 2010.

Saleh, Z., J. Dwyer, J. Howard, M. Uman, M. Bakhtiari, D. Concha, M. Stapleton, D. Hill, C. Biagi, and  H. Rassoul, Properties of the x-ray emission from rocket-triggered lightning as measured by the Thunderstorm Energetic Radiation Array (TERA), J. Geophys. Res.,114, D17, doi:10.1029/2008JD011618, 2009.

Dwyer, J. R., M. A. Uman and H. K. Rassoul, The remote measurement of thunderstorm electrostatic fields, J. Geophys. Res., 114, D09208, doi:10.1029/2008JD011386, 2009.

Dwyer, J. R., et al., A study of x-ray emission from laboratory sparks in air at atmospheric pressure, J. Geophys. Res., 113, Issue D23, CiteID D23207, 2008.

Howard, J., M. A. Uman, J. R. Dwyer, D. Hill, C. Biagi, Z. Saleh, J. Jerauld, H. K. Rassoul, Co-location of lightning leader x-ray and electric field change sources, Geophys. Res. Lett., 35, Issue 13, CiteID L13817, 2008.


Grefenstette, B. W., D. M. Smith, J. R. Dwyer and G. J. Fishman, Time Evolution of Terrestrial Gamma Ray Flashes, Geophys. Res. Lett., 35, Issue 6, CiteID L06802, 2008.


Dwyer, J. R., B. W. Grefenstette and D. M. Smith, High-energy electron beams launched into space by thunderstorms, Geophys. Res. Lett., 35, L02815, doi:10.1029/2007GL032430, 2008.


Dwyer, J. R., The source mechanisms of Terrestrial Gamma-ray Flashes (TGFs), J. Geophys. Res., 113, Issue D10, CiteID D10103, 2008.


Dwyer, J. R., Relativistic breakdown in planetary atmospheres, Physics of Plasmas, 14, 042901, 2007.


Dwyer, J. R., L. M. Coleman, R. Lopez, Z. Saleh, D. Concha, M. Brown, and H. K. Rassoul, Runaway breakdown in the Jovian atmospheres, Geophys. Res. Lett., 33, L22813, doi:10.1029/2006GL027633, 2006.


Dwyer, J. R., and D. M. Smith, A Comparison between Monte Carlo simulations of runaway breakdown and terrestrial gamma-ray flash observations, Geophys. Res. Lett.,32, L22804, doi:10.1029/2005GL023848, 2005.


Dwyer, J. R., A Bolt out of the Blue, Scientific American (May) 2005.


Dwyer, J. R., The initiation of lightning by runaway air breakdown, Geophys. Res. Lett., 32, L20808, doi:10.1029/2005GL023975, 2005.


Dwyer, J. R., H. K. Rassoul, Z. Saleh M. A. Uman,J. Jerauld, and J. A. Plumer, X-ray bursts produced by laboratory sparks in air, Geophys. Res. Lett., 32, L20809, doi:10.1029/2005GL024027, 2005.


Dwyer, J. R., M. A. Uman, H. K. Rassoul, V. A. Rakov, M. Al-Dayeh, E. L. Caraway, B. Wright, J. Jerauld, D. M. Jordan, K. J. Rambo, A. Chrest and E. Kozak, X-ray bursts associated with leader steps in cloud-to-ground lightning , Geophys. Res. Lett., 32, L01803, doi:10.1029/2004GL021782, 2005.


Dwyer, J. R., Implications of x-ray measurements of lightning, Geophys. Res. Lett., 31, L12102, doi:10.1029/2004GL019795, 2004.


Dwyer, J. R., M. A. Uman, H. K. Rassoul, V. A. Rakov, M. Al-Dayeh, E. L. Caraway, B. Wright, J. Jerauld, D. M. Jordan, K. J. Rambo, A. Chrest and C. Smyth, Measurements of x-ray emission from rocket-triggered lightning, Geophys. Res. Lett., 31, L05118, doi:10.1029/2003GL018770, 2004.


Dwyer, J. R., M. A. Uman, H. K. Rassoul, V. A. Rakov, M. Al-Dayeh, E. L. Caraway, B. Wright, J. Jerauld, D. M. Jordan, K. J. Rambo, A. Chrest and C. Smyth, A ground level gamma-ray burst observed in association with rocket-triggered lightning, Geophys. Res. Lett., 31, L05119, doi:10.1029/2003GL018771, 2004.


Dwyer, J. R., A fundamental limit on electric fields in air, Geophys. Res. Lett., 30, 2055, 2003.


Dwyer, J. R., M. A. Uman, H. K. Rassoul, M. Al-Dayeh, E. L. Caraway, J. Jerauld, V. A. Rakov, D. M. Jordan, K. J. Rambo, V. Corbin, and B. Wright, Energetic Radiation Produced During Rocket-Triggered Lightning, Science, 299, 694, 2003.