Presentations

167) Thomas, R J.,Rison, W., Johnson, J B., Behnke, S A., Krehbiel, P R., McNutt, S R., Initial Observations of Lightning and Electrical Activity from the 2008 Chaiten Eruption. presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2008.

166) Arechiga, R O., Johnson, J B., Edens, H E., Thomas, R J., Jones, K R., Infrasound Observations from Lightning presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2008.

165) Riousset, J A., Pasko, V P., Krehbiel, P R., Rison, W., Thomas, R J., Stanley, M A., Numerical modeling of the formation of the screening charge near the thundercloud boundaries and its impact on the initiation and early stages of development of blue and gigantic jets presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2008.

164) Behnke, S A., Thomas, R J., Krehbiel, P R., Rison, W., Edens, H E., McNutt, S R., Lightning Mapping Observations of the 2006 Eruption of Augustine Volcano, Alaska presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2008.

163) Edens, H E Eack, K Krehbiel, P R., Rison, W., Thomas, R J., Winn, W P., Hunyady, S J High-Speed Video, Mapping and Broadband Electric Field Recordings of Lightning presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2008.

162) McNutt, S.; Thomas, R.J.; Krehbiel, P.R.; Rison, W.; Edens, H; G. Aulich, G; Tytgat, G.; Clark, E., Lightning and electrical activity during the 2006 eruption of Augustine Volcano, Alaska, IAVCEI 2008 General Assembly, Reykjavak, Iceland, August, 2008.

161) Ronald J. Thomas, William Rison, Paul R. Krehbiel, Jeffrey B. Johnson, Stephen R. McNutt, Initial Observations of Lightning and Electrical Activity from the 2008 Chaiten Eruption, IAVCEI 2008 General Assembly, Reykjavak, Iceland, August, 2008.

160) Ronald J Thomas, Paul R Krehbiel, William Rison, Harald Edens, Stephen R. McNutt, Monitoring Volcanic Activity by Real-time Observations of Lightning and Electrical Activity Invited paper at Cities on Volcanoes 5 conference, Shimabara, Japan, November 2007.

159) Upward Electrical Discharges From Thunderstorms P Krehbiel, J Riousset, V Pasko, R Thomas, W Rison, M Stanley, H Edens presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2007.

158) Electrical Structure and Preliminary Breakdown of Lightning Flashes in Three New Mexico Thunderstorms L Coleman, M Stolzenburg, T Marshall, T Hamlin, P Krehbiel, W Rison, R Thomas, M Stanley presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2007.

157) Radiation Patterns of Lightning J D Harlin, P R Krehbiel, X Shao, R J Thomas presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2007.

156) High-Speed Electric Field Measurements and Lightning Mapping Observations at Langmuir Laboratory W Rison, H E Edens, P R Krehbiel, W P Winn, G Aulich, S J Hunyady, R J Thomas presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2007.

155) Transient Currents in the Global Electric Circuit due to CG and IC Lightning C Maggio, T Marshall, M Stolzenburg, P Krehbiel, W Rison, R Thomas, E Mareev, S Davydenko, S Yashunin, T presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2007.

154) Bolt-from-the-Blue Lightning Discharges H E Edens, W Rison, P R Krehbiel, R J Thomas presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2007.

153) Comparison of Sprite Locations With Lightning Channel Structure M A Stanley, W A Lyons, T E Nelson, P R Krehbiel, W Rison, R J Thomas presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2007.

152) What the LMA can tell us about lightning initialtion processes Ronald J Thomas, Paul Krehbiel, William Rison Invited Presentation at Streamers, sprites, leaders, lightning: from micro-to macroscales workshop, Lorentz Center, Leiden, Netherlands, October 2007

151) Upward Electrical Discharges from Thunderstorms Jeremy A. Riousset, Victor P. Pasko, Paul R. Krehbiel, Ronald J. Thomas, William Rison and Mark A. Stanley Presented at Streamers, sprites, leaders, lightning: from micro-to macroscales workshop, Lorentz Center, Leiden, Netherlands, October 2007

150) Applications of a portable lightning mapping array William Rison, Paul Krehbiel, Ron Thomas, Harald Edens, Graydon Aulich, Mike Stock and Nicolas O'Connor presented at the 13th International Conference on Atmospheric Electricity, in Beijing, China, August 2007

149) Transient currents in the global electric circuit due to CG and IC lightning C. R. Maggio, T. C. Marshall, M. Stolzenburg, B. Ray, E. A. Mareev, S. S. Davydenko, S. Yashunin, P. R. Krehbiel, W. Rison, R. J. Thomas, T. Hamlin, M. Stanley, S. Cummer presented at the 13th International Conference on Atmospheric Electricity, in Beijing, China, August 2007

148) Electrical evolution during the decay stage of New Mexico thunderstorms T. C. Marshall, M. Stolzenburg, P. R. Krehbiel, W. Rison, R. J. Thomas, T. Hamlin, G. Aulich, S. Hunyady, N. Ramig, W. P. Winn presented at the 13th International Conference on Atmospheric Electricity, in Beijing, China, August 2007

147) Broadband electric field measurements and mapping of lightning flashes over Langmuir Laboratory Harald E. Edens, Paul R. Krehbiel, William Rison, Nicholas O'Connor, Matthew Briggs, Steven J. Hunyady, Michael Stock, Ronald J. Thomas, William P. Winn, Graydon Aulich presented at the 13th International Conference on Atmospheric Electricity, in Beijing, China, August 2007

146) Lightning and electrical activity during the 2006 Eruption of Mt. Augustine R. J. Thomas, P. R. Krehbiel, W. Rison, H. Edens, S. R. McNutt, G. Tytgat presented at the 13th International Conference on Atmospheric Electricity, in Beijing, China, August 2007

145) Thomas, R J, Krehbiel, P., Rison, W., Aulich, G., Edens, H., McNutt, S., Tytgat, G., Clark, E Lightning and electrical activity during the eruption of Mt. Augustine, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2006.

144) Riousset, J A., Pasko, V P., Krehbiel, P R., Rison, W., Thomas, R J Three-Dimensional Fractal Modeling of Intracloud Lightning Discharge in a New Mexico Thunderstorm and Comparison With Lightning Mapping Observations, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2006.

143) Edens, H., Krehbiel, P., Rison, W., O'Connor, N., Briggs, M., Stock, M., Thomas, R., Hunyady, S., Winn, W., Aulich, G Broadband Electric Field Measurements and Mapping of Lightning Flashes Over Langmuir Laboratory presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2006.

142) Rison, W., Krehbiel, P., Thomas, R., Edens, H., Aulich, G., O'Connor, N Kieft, S., McNutt, S., Tytgat, G., Clark, E., Lighting Observations During the Mt. Augustine Volcanic Eruptions With the Portable Lightning Mapping Stations, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2006.

141) Krehbiel, P., Rison, W., Edens, H., O'Connor, N., Aulich, G., Thomas, R Kieft, S., Goodman, S., Blakeslee, R., Hall, J., Bailey, J., The Washington DC Metro Area Lightning Mapping Array, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2006.

140) Stolzenburg, M., Marshall, T C., Maggio, C R., Ray, B., Mareev, E A., Davydenko, S S Krehbiel, P R., Rison, W., Thomas, R J Evolution of Above-cloud Electric Fields and Lightning, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2006.

139) Maggio, C R., Marshall, T C., Stolzenburg, M., Ray, B., Mareev, E., Davydenko, S Yashunin, S., Cummer, S., Krehbiel, P., Rison, W., Thomas, R., Transient Currents in the Global Electric Circuit due to CG Lightning, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2006.

138) W. L., Boeck, Suszcynsky, D M., Shao, X., Nemzek, R., Christian, H J., Goodman, S J., MacGorman, D., Thomas, R., Krehbeil, P, Multi-Sensor Observations of Lightning in Oklahoma, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2006.

137) P. Krehbiel, W. Rison, R. Thomas, Graydon Aulich, Steve McNutt, Guy Tytgat, Ed Clark Lightning Observations in Alaska”Ēs Augustine volcano (or, how we spent the last two weeks) presented at the American Meterlogy Society meeting in Atlanta, Georga, February, 2006.

136) P.R. Krehbiel, W. Rison, R. J. Thomas, D. R. MacGorman, W. D. Rust, T. Marshall, and M. Stolzenburg A review of lightning phenomenology in thunderstorms presented at the American Meterlogy Society meeting in Atlanta, Georga, February, 2006.

135) Krehbiel, P R, Rison, W R, Thomas, R J, Edens, H E, Aulich, G D, Recent Developments With the New Mexico Tech Lightning Mapping Array presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2005.

134) Harlin, J D, Hamlin, T D, Krehbiel, P, Thomas, R J, Rison, W, Lightning Mapping Array Source Powers presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2005.

133) Thomas, R J,Krehbiel, P, Rison, W, What the LMA can tell us about lightning initialtion processes presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2005.

132) Ronald J Thomas, Sonja A Behnke, Paul Krehbiel, William Rison Initial Lightning Leader Speeds, Implications for Initiation Processes. presented at the International Symposium on Nonlinear Wave Physics, Russia, August, 2005

131) R J Thomas, S A Behnke, T Hamlin, P Krehbiel, W Rison Leader Velocities of Normal and Inverted Intracloud Lightning Flashes as Observed by the Lightning Mapping Array, Eos Trans.AGU,85(47), Fall Meet. Suppl., Abstract AE23A-0844 presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2004.

130) W Tidwell, T C Marshall, M Stolzenburg, C R Maggio, M Stanley, W Rison, P R Krehbiel, R J Thomas, T Hamlin Investigations of Physical Details in Developing Lightning Flashes, Eos Trans.AGU,85(47), Fall Meet. Suppl., Abstract AE23A-0836 presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2004.

129) P Krehbiel, W Rison, R Thomas, T Marshall, M Stolzenburg, W Winn, S Hunyady Thunderstorm Charge Studies Using a Simple Cylindrical Charge Model, Electric Field Measurements, and Lightning Mapping Observations, Eos Trans.AGU,85(47), Fall Meet. Suppl., Abstract AE23A-0843 presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2004.

128) L Coleman, T C Marshall, M Stolzenburg, W P Winn, P R Krehbiel, W Rison, R J Thomas Potential Wells and Preliminary Breakdown in CG Flashes, Eos Trans.AGU,85(47), Fall Meet. Suppl., Abstract AE23A-0845 presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2004.

127) H Edens, W Rison, S Hunyady, P Krehbiel, W Winn, R Thomas Detailed Lightning Observations With the Compact Lightning Mapping Array at Langmuir Laboratory, Eos Trans.AGU,85(47), Fall Meet. Suppl., Abstract AE33A-0192 presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2004.

126) T C Marshall, M Stolzenburg, C R Maggio, L M Coleman, P R Krehbiel, T Hamlin, R J Thomas, W Rison Observed Electric Fields Associated with Lightning Initiation, Eos Trans.AGU,85(47), Fall Meet. Suppl., Abstract AE41A-02 presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2004.

125) William Rison, Paul Krehbiel, Ronald J Thomas Lightning modes in convective storms, presented at the International Lightning Detection Conference in Helsinki, June 2004

124) Paul Krehbiel, William Rison, Ronald J Thomas Lightning mapping arrays in New Mexico and Oklahoma, presented at the International Lightning Detection Conference in Helsinki, June 2004

123) Ronald J Thomas, Sonja A Behnke, Paul Krehbiel, William Rison Lightning leader speeds, a comparison of simulations and measurements from the New Mexico Tech Lightning Mapping Array, presented at the International Lightning Detection Conference in Helsinki, June 2004

122) Thomas, R J, Krehbiel, P, Rison, W, Winn, W, Hamlin, T, Harlin, J, Accuracy of the Lightning Mapping Array, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2003.

121) Behnke, S A, Thomas, R J, Krehbiel, P, Rison, W, Propagation Speeds of Lightning Leaders Throughout an Entire Flash Using 10 $\mu$s Time Resolution 3D Mapping Data, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2003.

120) Krehbiel, P, Rison, W, Thomas, R J, Hamlin, T, Harlin, J, Lightning Modes in Thunderstorms, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2003.

119) Maggio, C R, Coleman, L M, Marshall, T C, Stolzenburg, M, Stanley, M A, Hamlin, T, Krehbiel, P R, Rison, W, Thomas, R J, Lightning Initiation Locations as a Remote Sensing Tool of Large Thunderstorm Electric Fields, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2003.

118) Harlin, J D, Hamlin, T, Krehbiel, P, Thomas, R, Rison, W, Short Duration Discharges Located by NMIMT's Lightning Mapping Array, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2003.

117) Marshall, T C, Coleman, L, Maggio, C, Stolzenburg, M, Hamlin, T, Krehbiel, P, Rison, W, Thomas, R, Lightning Initiation Locations as a Remote Sensing Tool of Thunderstorm Electrical Evolution, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2003.

116) Stolzenburg, M, Marshall, T, Krehbiel, P, Rison, W, Thomas, R, Winn, W, Hunyady, S, Aulich, G, Ramig, N, Initial Electrification of Thunderstorms: Evidence for a Connection Between Precipitation and Electrical Charging, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2003.

115) R. Thomas, P. Krehbiel, W. Rison, T. Harlin, J. Hamlin and N. Campbell The LMA Flash Algorithm, presented at the 12th International Conference on Atmospheric Electricity, in Versailles, France, June 2003.

114) W. David Rust, Donald R. MacGorman, Paul R. Krehbiel, Ron Thomas, Eric Bruning, and Stephanie Stroman The Status of our Search for Inverted-Polarity Electrical Structures in Thunderstorms, presented at the 12th International Conference on Atmospheric Electricity, in Versailles, France, June 2003.

113) M. Stolzenburg, T. C. Marshall, L. M. Coleman, P. R. Krehbiel, R. J. Thomas, W. Rison, and T. Hamlin Evolution of Electric Charge and Lightning Type in Developing Thunderstorms, presented at the 12th International Conference on Atmospheric Electricity, in Versailles, France, June 2003.

112) P. Krehbiel, W. Rison, R. Thomas, T. Hamlin, J. Harlin, and Y. Zhang Thunderstorm Observations with the Lightning Mapping Array, presented at the 12th International Conference on Atmospheric Electricity, in Versailles, France, June 2003.

111) L. M. Coleman, M. Stolzenburg, T. C. Marshall, P. R. Krehbiel, R. J. Thomas, W. Rison, and T. Hamlin The Effects of Charge and Electrostatic Potential on Lightning Propagation , presented at the 12th International Conference on Atmospheric Electricity, in Versailles, France, June 2003.

110) T. Hamlin, P. Krehbiel, Y. Zhang, R. Thomas, W. Rison, and J. Harlin Electrical Structure and Storm Severity Inferred by 3-D Lightning Mapping Observations During STEPS , presented at the 12th International Conference on Atmospheric Electricity, in Versailles, France, June 2003.

109) D. MacGorman, D. Rust, O. van der Velde, M. Askelson, P. Krehbiel, and R. Thomas Lightning Relative to Precipitation and Tornadoes in a Supercell Storm, presented at the 12th International Conference on Atmospheric Electricity, in Versailles, France, June 2003.

108) T. C. Marshall, M. Stolzenburg, L. M. Coleman, P. R. Krehbiel, W. Rison, and R. J. Thomas Using Balloon Measurements to Verify and Quantify Radar and LMA Inferences About Thunderstorms , presented at the 12th International Conference on Atmospheric Electricity, in Versailles, France, June 2003.

107) W. Rison, P. Krehbiel, R. Thomas, T. Hamlin, and J. Harlin Lightning Mapping and Radar Observations of Bolts from the Blue , presented at the 12th International Conference on Atmospheric Electricity, in Versailles, France, June 2003.

106) J. Harlin, T. Hamlin, P. Krehbiel, R. Thomas, and W. Rison Using the NMIMT LMA to Determine Which Model of Lightning Initiation Fits Best with Measured Results , presented at the 12th International Conference on Atmospheric Electricity, in Versailles, France, June 2003.

105) Y. Zhang, P. Krehbiel, T. Hamlin, J. Harlin, R. Thomas, and W. Rison Observations of radiations from airplane during STEPS, presented at the 12th International Conference on Atmospheric Electricity, in Versailles, France, June 2003.

104) Thomas, R J, Behnke, S, Hamlin, T, Harlin, J, Krehbiel, P, Rison, W, New Mexico Thunder Storms Observed by the Lightning Mapping Array, An Overview of One Season, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2002.

103) Marshall, T C, Stolzenburg, M, Coleman, L M, Krehbiel, P R, Thomas, R J, Rison, W, Further Studies of the Electrical Alignment of Ice Crystals in Thunderstorms, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2002.

102) Stolzenburg, M, Marshall, T C, Coleman, L M, Krehbiel, P R, Thomas, R J, Rison, W, Hamlin, T, Locations of Electric Charge in Developing Thunderstorms, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2002.

101) Bruning, E C, Rust, D, MacGorman, D R, Krehbiel, P R, Thomas, R, Rison, W, Hamlin, T, Harlin, J, Thunderstorm Charge Regions Inferred From the Vector Electric Field in Combination With Data From a Lightning Mapping Array in STEPS, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2002.

100) Coleman, L, Marshall, T C, Stolzenburg, M, Krehbiel, P R, Thomas, R J, Rison, W, Hamlin, T, The Effects of Potential Wells on Low Altitude Lightning, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2002.

99) Hamlin, T, Krehbiel, P R, Zhang, Y, Thomas, R J, Electrical Structure Inferred by 3-D Lightning Mapping Observations During STEPS, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2002.

98) Rust, D W, MacGorman, D R, Bruning, E C, Krehbiel, P R, Rison, B,Thomas, R, Harlin, J, Hamlin, T, Stroman, S, Additional analyses of possibly inverted-polarity electrical structures in thunderstorms during STEPS, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2002.

96) Thomas, R J, Krehbiel, Rison, Accuracy of the Lightning Mapping Array, presented at the International Lightning Detection Conference, October 2002

96) MacGorman, D, Rust, van der Velde, Askelson, Krehbiel, Thomas, Rison, Hamlin, Harlin, Positive Cloud-to-Ground Lightning and Inverted Polarity Cloud Flashes Relative to Vertical Profiles of Electric Field and Microphysical Properties of Storms, presented at the International Lightning Detection Conference, October 2002

95) Thomas, R J, Hamlin, T, Harlin, J, Krehbiel, P, Rison, W , Stamley, M, Thunderstorm Charge Structure and the Spatial Distribution of Radiation Sources Located by LMA presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2001.

94) Harlin, J D, Hamlin, T, Krehbiel, P R, Thomas, R J, Rison, W, Using the LMA to Study Flash Initiation presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2001.

93) MacGorman, D, Rust, D, van der Velde, O, Askelson, M, Krehbiel, P, Thomas, R, Rison, B, Lightning Relative to Graupel Occurrence in a Tornadic Supercell Storm during MEaPRS presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2001.

92) Dymond, K F, Budzien, S A, Thonnard, S E, Nicholas, A C, McCoy, R P, Thomas, R J, A Comparison of Electron Density Profiles Derived from the Low Resolution Airglow and Aurora Spectrograph (LORAAS) Ultraviolet Measurements presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2001.

91) Zhang, Y, Krehbiel, P, Hamlin, T, Harlin, J, Thomas, R, Rison, W, Electrical Charge Structure and Cloud-to-Ground Lightning in Thunderstorms during STEPS. presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2001.

90) Hamlin, T, Harlin, J D, Krehbiel, P R, Rison, W, Thomas, R J, Lightning as a Detector of Convective Surges in Thunderstorms presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2001.

89) Coleman, L, Marshall, T C, Stolzenburg, M, Hamlin, T, Krehbiel, P R, Rison, W, Thomas, R J, Winn, W P, The Effects of Charge and Electrostatic Potential on Lightning Propagation presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2001.

88) Rison, W, Krehbiel, P, Thomas, R, Hamlin, T, Harlin, J, High Time Resolution Lightning Mapping Lightning Mapping Observations of a Small Thunderstorm during STEPS presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2001.

87) Thomas, R J, Hamlin, T, Harlin, J, Krehbiel, P, Rison, W, Stanley, M, Observations of Positive Cloud to Ground Lightning made with the Lightning Mapping Array. presented at the International Working group on the Physics of Lightning, Nogya, Japan, September, 2001.

86) Dymond, K F, Wolfram, K D, Budzien, S A, Nicholas, A C, McCoy, R P, Thomas, R J, Metal Ion Morphology Observed by the ISAAC Instrument presented at the Spring Meeting of the American Geophysical Union in Boston, Massachusetts, May 2001.

85) Budzien, S A, Fortna, C B, Dymond, K F, Thonnard, S E, Nicholas, A C, McCoy, R P, Thomas, R J, Thermospheric Temperature Derived from ARGOS Observations of N$_2$ Lyman-Birge-Hopfield Emission presented at the Spring Meeting of the American Geophysical Union in Boston, Massachusetts, May 2001.

84) Thomas, R J, T Hamlin, J Harlin, P Krehbiel, W Rison, Observations of the 3-D structure of Positive Cloud to Ground Lightning during STEPS, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2000.

83) Rison, W, P Krehbiel, R Thomas, T Hamlin, J Harlin, A Time-of-Arrival Lightning Mapping System with High Time Resolution, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2000.

82) Stanley, M A, P R Krehbiel, R J Thomas, W Rison, T Hamlin, J Harlin, Comparison of the Interferometer and Time-of-Arrival Techniques of Lightning Mapping at VHF, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2000.

81) Krehbiel, P K, R Thomas, W Rison, T Hamlin, J Harlin, M Stanley, J Lombardo, D Shown, Inverted Polarity Lightning in STEPS, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2000.

80) Harlin, J D, T D Hamlin, P R Krehbiel, R J Thomas, W Rison, D Shown, LMA Observations of Tornadic Storms During STEPS 2000, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2000.

79) T Hamlin, J D Harlin, P R Krehbiel, W Rison, R J Thomas, Lightning Mapping Operations During STEPS, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2000.

78) Coleman, L, T Marshall, M Stolzenburg, P Krehbiel, R Thomas, D Shown, A Comparison of Thunderstorm Charge Location Indicated by the Lightning Mapping Array (LMA) and by Balloon Electric Field Soundings, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2000.

77) Marshall, T, M Stolzenburg, L Coleman, P Krehbiel, R Thomas, D Shown, W Winn, S Hunyady, G Aulich, Electric Field During the Decay Stage of Four New Mexico Mountain Thunderstorms, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2000.

76) K F Dymond, S A Budzien, S E Thonnard, A C Nicholas, R P McCoy, R J Thomas, Daytime Electron Density Profiles Derived by Analysis of the Low Resolution Airglow and Aurora Spectrograph (LORAAS)Data from the Advanced Research and Global Observing Satellite (ARGOS), presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2000.

75) S A Budzien, K F Dymond, S E Thonnard, A C Nicholas, R P McCoy, R J Thomas, Neutral Densities Retrieved from Dayglow Observed by the Low Resolution Airglow and Aurora Spectrograph (LORAAS) aboard ARGOS, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 2000.

74) Thomas, R J, Dymond, K F, McCoy, R P, Budzien, S A, Thonnard, S E, The Two-Dimensional Structure of the Nighttime Ionosphere inferred from HIRAAS measurements of Oxygen Plus 91.1 and 135.6 nm Emission Measurements, presented at the spring Meeting of the American Geophysical Union in Washington DC, May 2000.

73) Dymond, K F, Thonnard, S E, Budzien, S A, Meier, R R, Thomas, R J, McCoy, R P, A Comparison of Electron Densities Determined by Inversion of UV Radiative Recombination Radiation with Ionosonde Measurements, presented at the spring Meeting of the American Geophysical Union in Washington DC, May 2000.

72) Budzien, S A, Dymond, K F, Thonnard, S E, Nicholas, A C, McCoy, R P, Thomas, R J, 2-D Modeling of Airglow Observed by the Low Resolution Airglow and Aurora Spectrograph (LORAAS) on ARGOS, presented at the spring Meeting of the American Geophysical Union in Washington DC, May 2000.

71) Thomas, R J, Rison, W, Hamlin, T, Harlin, J, Krehbiel, P R, Power Distribution of VHF Lightning sources located by the Lightning Mapping Array, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1999.

70) Wiens, K C, Winn, W P, Krehbiel, P R, Hamlin, T, Thomas, R J, Rison, W, Explanations of Strange Ground-Based Electric Field Measurements Using the New Mexico Tech Lightning Mapping System, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1999.

69) Marshall, T C, Stolzenburg, M, Rust, W D, Krehbiel, P R, Rison, W, Thomas, R J, Hamlin, T, Shown, D, Winn, W P, Aulich, G, Hunyady, S, A Study of Electrical Evolution in Thunderstorms, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1999.

68) Hamlin, T, Krehbiel, P R, Harlin, J D, Thomas, R J, Rison, W Lightning Mapping Observations of High Altitude Discharges in Central Oklahoma, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1999.

67) Rison, W, Stanley, M, Krehbiel, P R, Thomas, R J, Harlin, J, Shao, X M, Smith, D A, Observations of Positive Bipolar Discharges, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1999.

66) Dymond, K F, Budzien, S A, Thonnard, S E, Nicholas, A C, Meier, R R, Picone, J M, Fortna, C B, McCoy, R P, Thomas, R J, Preliminary Results from the High Resolution Airglow and Aurora Spectroscopy (HIRAAS) Experiment: Overview and High-Resolution Ionospheric and Thermospheric Spectrograph (HITS) Observations, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1999.

65) Budzien, S A, Dymond, K F, McCoy, R P, Thonnard, S E, Nicholas, A C, Wolfram, K G, Meier, R R, Picone, J M, Drob, D P, Thomas, R J, Preliminary Results from the High Resolution Airglow and Aurora Spectroscopy (HIRAAS) Experiment: Ionospheric Spectroscopy and Atmospheric Chemistry (ISAAC) Sensor Observations, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1999.

64) Thonnard, S E, Nicholas, A C, Dymond, K F, Budzien, S A, McCoy, R P, Meier, R R, Picone, J M, Drob, D P, Thomas, R J, Fortna, C B, Wolfram, K D, Preliminary Results from the High Resolution Airglow and Aurora Spectroscopy Experiment (HIRAAS), Ultraviolet Airglow Observations from the Low Resolution Airglow and Aurora Spectrograph, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1999.

63) Thomas, R J, Rison, W, Hamlin, T, Krehbiel, P 3-Dimensional Lightning Observations in Central New Mexico, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1998.

62) MacGorman, D R, Stolzenburg, M, Marshall, T, Krehbiel, P, R, Thomas, R, Rison, Beasley, W, Eack, K, Lockwood, M Electric Field Profiles and Lightning in Storms with Frequent Positive Cloud-to-Ground Lightning, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1998.

61) Krehbiel, P, R, Thomas, R, Rison, W, Hamlin, T, Harlin, J, Davis, M, Lightning Mapping Observations During MEaPRS in Central Oklahoma, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1998.

60) Rison, W., P. Krehbiel, R. J. Thomas, Davis, M, Hamlin, T, Harlin, J, Barber, T, Jones, M, A Deployable 3-Dimensional Lightning Mapping System, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1998.

59) Rison, W., P. Krehbiel, R. J. Thomas, Development of a transportable lightning location system for field studies of thunderstorms, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1997.

58) Wu, J., R. J. Thomas, Retrieval of thermospheric concentrations from GLO data, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1997.

57) Dymond, K. F., S. A. Budzien, E. j. Bucsela, R. J. Thomas, A technique for determining thermospheric temperatures from the N2 Lyman-Birge-Hopfield (LBH) emissions, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1997.

56) Shao, X M, D A Smith, C T Rhodes, D N Holden, R S Massey, M Brook, P R Krehbiel M Stanley, R Thomas, Observations of Large-Amplitude Bipolar Electric Field Chage Pulses: Possible Sources for TIPP Events. Fall Meeting of the American Geophysical Union in San Francisco, California, December 1996.

55) Thonnard, S E, K F Dymond R P McCoy, R J Thomas, A new algrithm for detecting Night time F-Region Electron Densitiy from the O I 911 and 1356 A Emissions. Fall Meeting of the American Geophysical Union in San Francisco, California, December 1995.

54) Dymond,K F, R P McCoy, S E Thonnard, S A Budzien, D D Cleary, T Bullett, R J Thomas, Preliminary results of the 1992 Flight of the high resolution airglow and aurora spectrograph (HIRAAS) experiment, Fall Meeting of the American Geophysical Union in San Francisco, California, December 1995.

53) Picone, J. M., R. R. Meier, K. F. Dymond, R. P. McCoy, O. Kelly, A. Nicholas, D. J. Melendez-Alvira, R. J. Thomas Upper Atmoapheric data analysis capabilities in support of RAIDS and ARGOS. Fall Meeting of the American Geophysical Union in San Francisco, California, December 1994.

52) Minschwaner, k., R. J. Thomas, G. P. Anderson, L. A. Hall, D. W. Rusch, A comparison between observed and calculated scattered UV radiation in the stratosphere. Fall Meeting of the American Geophysical Union in San Francisco, California, December 1993.

51) Picone, J. M., K. F. Dymond, R. R. Meier, R. P. McCoy, O. Kelly, R. J. Thomas Retrieval of daytime ionospheric O+ distributions from O II 834A limb intensities. Fall Meeting of the American Geophysical Union in San Francisco, California, December 1993.

50) Thomas, R. J., P. Houle, Atomic oxygen Density and reaction rates infered from SME Green-line data near the Mmesopause, Fall Meeting of the American Geophysical Union in San Francisco, California, December 1992.

49) Krehbiel, P. R., X. M. Shao, W. Rison, R. J. Thomas, Real-time interferometric observations of lightning inside storms at Orlando, FL, Fall Meeting of the American Geophysical Union in San Francisco, California, December 1992.

48) Rhodes, C. T., X. M. Shao, P. R. Krehbiel, R. J. Thomas, Observations of Lightning Processes using VHF Radio Interferometry , presented at the International Aerospace Conference on Lightning and Static Electricity, Cocoa Beach, Fl., 1991

47) Rusch, D. W., J. M. Zawodny, R. J. Thomas, A climatology of Nitrogen Dioxide in the Stratosphere, presented at the Spring Meeting of the American Geophysical Union, 1991.

46) Shao, X. M., P. R. Krehbiel, R. J. Thomas, Interferometric Observations of Lightning Radiation in Florida, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1991.

45) Picone, J. M., R. P. McCoy R. R. Meier, K. F. Dymond, S. E. Thonnard, P. R. Straus, R. J. Thomas, D. A. Hardin, Data analysis for the Remote Atmospheric and Ionospheric Detection System (RAIDS), presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1991.

44) Thomas, R. J., Properties of the middle atmosphere sensed by satellite investigations: The global picture, presented at COSPAR, The Hague, Netherlands, July 1990.

43) Thomas, R. J., Atomic oxygen and atomic hydrogen near the mesopause, presented at COSPAR, The Hague, Netherlands, June 1990.

42) Krehbiel, P. R., X. M. Shao, R. J. Thomas, C. T. Rhodes, and C. O. Hayenga, VHF radio interferometry of lightning, NRAO conference, Socorro, Oct. 1990.

41) Thomas, R.J., Reference model for Oxygen Singlet delta, COSPAR, Helsinki, Finland, July 1988

40) Thomas, R.J., Annual ozone variations in the upper mesosphere, Quadrennial Ozone Symposium, Goettinggen, FRG, August 1988

39) Rosenlof, K. H., R. J. Thomas, and G. E. Thomas, Five--Day Mesospheric Waves Observed in SME Ozone, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1988.

38) Thomas, R. J., R. T. Clancy, and K. H. Rosenlof, Two--Day waves Observed in the SME Ozone Above 0.01 mbar, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1988.

37) Barth, C.A., D.W. Rusch, and R.J. Thomas, Ozone yrends in the mesosphere from observations by the Solar Mesosphere Explorer (SME), presented at the Spring Meeting of the American Geophysical Union in Baltimore, Maryland, May 1987.

36) Clancy, R.T., D.W. Rusch, R.J. Thomas, M. Allen, and R.S. Eckman, Morning- afternoon variations in the mesospheric ozone, presented at the Spring Meeting of the American Geophysical Union in Baltimore, Maryland, May 1987.

35) Thomas, R.J., D.W. Rusch, R.T. Clancy, J.E. Wedding, and K.H. Rosenlof, Antarctic observation of NO_2 by SME during October 1986, presented at the IUGG Meeting, Vancouver, Canada, August 1987.

34) Sharp, W.E., R.J. Thomas, D.W. Rusch, R.T. Clancy, and M. Allen, The Oxygen- hydrogen chemistry of the upper mesosphere, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1987.

33) LeTexier, H., S. Solomon, and R.J. Thomas, Seasonal variabililty of the OH(7-5) dayglow and nightglow measured by SME comparison with model predictions, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1987.

32) Barth, C.A., R.J. Thomas, G.J. Rottman, and D.W. Rusch, Recent measurements from the Solar Mesosphere Explorer, presented at COSPAR in Toulouse, France, July 1986.

31) Thomas, R.J. and B.L. MacRae, Atomic oxygen inferred from SME airglows in the upper mesosphere and lower thermosphere, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, December 1986.

30) Thomas, R.J., Mesospheric ozone: Observations and results from the Solar Mesosphere Explorer spacecraft, presented at IAGA/IAMAP, Prague, Czechoslovakia, 5-17 August 1985.

29) Thomas, G.E., D.E. Siskind, and R.J. Thomas, Ozone variance and wave activity in the mesosphere, presented at IAGA/IAMAP, Prague, Czechoslovakia, 5-17 August 1985.

28) Thomas, R.J. and K. Rosenlof, Dynamical control of ozone in the mesosphere: Two regions observed by the Solar Mesosphere Explorer, presented at IAGA/IAMAP, Prague, Czechoslovakia, 5-17 August 1985.

27) Petzholdt, K., R. Lenschow, W. Meyer, A. O'Neill, F.J. Schmidlin, and R.J. Thomas, Large scale structure of the stratosphere and the lower mesosphere over the northern hemisphere during the MAP/WINE campaign, presented at IAGA/IAMAP, Prague, Czechoslovakia, 5-17 August 1985.

26) Thomas, G.E. and R.J. Thomas, Ozone variability in the mesosphere, presented at the Ozone Symposium sponsored by the Clarendon Laboratory in Oxford, England, 1984.

25) Thomas, R.J., Ozone in the mesosphere, annual and semiannual variations, presented at the Quadrennial Ozone Symposium in Helkidiki, Greece, 1984.

24) Thomas, G.E. and R.J. Thomas, Ozone variability in the mesosphere, presented at the Quadrennial Ozone Symposium in Halkidiki, Greece, 1984.

23) Rusch, D.W., R.S. Eckman, C.A. Barth, and R.J. Thomas, The influence of solar variability on the ozone density in the mesosphere, presented at the Quadrennial Ozone Symposium in Halkidiki, Greece, 1984.

22) Rusch, D.W., C.A. Barth, and R.J. Thomas, Two years of ozone results from the ultraviolet spectrometer on the Solar Mesosphere Explorer, presented at COSPAR XXV, Graz, Austria, 1984.

21) Thomas, R.J., Variations of ozone in the upper mesosphere measured by SME, presented at COSPAR XXV, Graz, Austria, 1984.

20) Thomas, G.E., D.E. Siskind, and R.J. Thomas, Ozone variance as a measure of Eddy mixing in the mesosphere, presented at the American Geophysical Union Winter Meeting, San Francisco, California, December 1984.

19) Thomas, R.J., O_2 (1 Delta_g) emission (1.27 u) at night -- Global observations at night from the Solar Mesosphere Explorer spacecraft, presented at the American Geophysical Union Winter Meeting, San Francisco, California, December 1984.

18) Clancy, R.T., D.W. Rusch, R.J. Thomas, R.S. Eckman, and M. Allen, Diurnal variations of ozone over the summer poles, presented at the Fall Meeting of the American Geophysical Union, San Francisco, California, December 1984.

17) Spear, K.A., S. Solomon, R.J. Thomas, and D.W. Rusch, Mesospheric response to particle Precipitation, presented at the Fall Meeting of the American Geophysical Union, San Francisco, California, December 1984.

16) Solomon, S., G.C. Reid, D.W. Rusch, and R.J. Thomas, Comparison between model calculations and mesospheric ozone observations for the SME satellite, presented at the XVIII General Assembly of the International Union of Geodesy and Geophysics in Hamburg, FRG, August 15-17, 1983.

15) Solomon, S., G.C. Reid, D.W. Rusch, and R.J. Thomas, Mesospheric ozone depletion during solar proton events, presented at the Sixth ESA Symposium on European Rocket and Balloon programmes (ESA SP-183), 131- 135, 1983.

14) Thomas, R.J., G.E. Thomas, and L.E. Clemens, Ozone in the upper mesosphere -- one year of global observations, presented at the XVIII General Assembly of the International Union of Geodesy and Geophysics in Hamburg, FRG, August 15-27, 1983.

13) Thomas, R.J., Annual and semiannual behavior of mesospheric ozone measured by SME, presented at the Fall Meeting of the American Geophysical Union in San Francisco, December 1983.

12) Thomas, R.J., D.W. Rusch, and L.E. Clemens, Satellite measurements of ozone depletions during the solar proton event of July 13, 1982, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, 1982.

11) Barth, C.A., D.W. Rusch, R.J. Thomas, G.H. Mount, J.M. Zawodny, and R.S. Eckman, Intercomparison of satellite measurements of temperature, ozone, and 1.27 u airglow in the stratosphere and mesosphere, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, 1982.

10) Rusch, D.W., G.H. Mount, R.J. Thomas, M.T. Callan, and R.S. Eckman, Satellite measurements of ozone between 1.0 and 0.1 mb for the period January to July, 1982, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, 1982.

9) Solomon, S., G.C. Reid, D.W. Rusch, and R.J. Thomas, The effects of the July 13, 1982, solar proton event on mesospheric ozone: Comparison of calculations and observations, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, 1982.

8) West, R.A., R.J. Thomas, G.H. Mount, D.W. Rusch, G.E. Thomas, and C.A. Barth, Satellite observations of scattered sunlight from the El Chichon aerosol cloud, presented at the Fall Meeting of the American Geophysical Union in San Francisco, California, 1982.

7) Thomas, G.E. and R.J. Thomas, Two years of satellite measurements of the El Chichon stratospheric aerosol, presented at the COSPAR meeting in Ottawa, Ontario, Canada, May-June 1982.

6) Thomas, G.E., R.J. Thomas, D.W. Rusch, and C.P. McKay, Photochemical and radiative balance implications of SME mesospheric ozone density measurements, presented at the Spring Meeting of the American Geophysical Union in Philadelphia, Pennsylvania, June 1982.

5) Thomas, R.J., The SME Near Infrared Spectrometer: Ozone and O2(1 Delta_g) densities in the mesosphere and their variations, presented at the Spring Meeting of the American Geophysical Union in Philadelphia, Pennsylvania, June 1982.

4) Thomas, R.J.,Near infrared nightglow: A comparison of measurements and a model, Trans. Am. Geophys. Union, 1980.

3) Thomas, R.J., Simultaneous measurement of atomic oxygen and the green line, Trans. Am. Geophys. Union, 59, 1146, 1978.

2) Donahue, T.M. and R.J. Thomas, Seasonal and hemispherical variation of atomic oxygen densities in lower thermosphere, Trans. Am. Geophys. Union, 53, 1080, 1972.

1) Thomas, R.J. and T.M. Donahue, Spatial variation of the green line and N_e in the equatorial F-region, Trans. Am. Geophys. Union, 52, 885, 1971. (Paper presented at A.G.U. meeting.)