|
|
Robert H. HolzworthProfessor of Earth & Space Science and Adjunct Professor of Physics |
Earth and Space Sciences
Room
263 Johnson Hall
(206) 685-7410 (office)
(206) 685-3815 (fax)
bobholz@washington.edu
COS Profile at http://myprofile.cos.com/holzworr79
Pictures from my voyage/Fall 2004
Pictures from the MASS rocket campaign, Andenes, Norway, July/August 2007
ESS595 Space Science Seminar and Journal Club Schedule
ESS576/AA556 Winter Quarter 2008
WWLL Network COOL MOVIE link and main WWLLN webpage
Ph.D., Physics, University of California, Berkeley, 1977.
Asst. Res. Physicist, Space Science Lab, UC Berkeley, 1977 - 8.
Member of the Technical Staff, Space Science Lab, The Aerospace Corp., Los
Angeles, 1978-82
UW Faculty since 1982
Experimental space plasma physics,
atmospheric and magnetospheric electrodynamics, middle atmosphere
electrodynamics, thunderstorm and lightning electrodynamics.
LOOKING FOR TWO NEW RESEARCH STUDENTS
(February 2009)
My research involves the experimental investigation of electrical parameters in the Earth's environment, in particular, the study of the electromagnetic energy flow that couples separated environments such as the atmosphere, the ionosphere, and the magnetosphere. Active projects include: Sprite balloons (NSF sponsored) involving stratospheric balloon flights from Brazil to study the electrodynamic environment above sprite producing thunderstorms, a study of NLC (Noctilucent Clouds) and PMSE (Polar mesospheric summer echos) with two rockets from Norway in 1999 (NASA sponsored), Electric field measurements in Antarctica with the Polar Patrol Balloon program of with U. Houston and NIPR, Japan; MINIS balloon experiment studying 'killer electrons' with four balloon flights from SANAE station in Antarctica in December 04 (with UC Berkeley and U. Houston and many others) (NSF Sponsored); C/NOFS Optical Lightning Detector in the VEFI electric field experiment to be launched Nov 2004 into equatorial orbit to study ionospheric irregularities (NASA and USAF sponsored), Sounding Balloons to study thunderstorm electric fields, with three flights to be in may 2004 with NSSL in Norman, OK (Mindlin Foundation support), and the latest effort: global lightning location using VLF techniques with the WWLL (World Wide Lightning Location network) now being managed by my group (see wwlln.net for more information).
Students are encouraged to be vitally involved in hardware production and data analysis in all of these projects. All instruments are built in our lab by the students or the professional engineering staff. Most projects include the opportunity for student travel.
Email Bob at bobholz@ess.washington.edu .
PUBLICATIONS
since 2004 (from a total list of over 100)
WWLL
global lightning detection system: Regional validation study in
A New
High-Voltage Electric Field Instrument for Studying Sprites, IEEE TRANSACTIONS
ON GEOSCIENCE AND REMOTE SENSING (IEEE),
0196-2892/04$20.00 © 2004 (with Jeremy N. Thomas and John Chin
Electric field
measurements in noctilucent clouds, JOURNAL OF
GEOPHYSICAL RESEARCH, VOL. 109, D16203, doi:10.1029/2003JD004468,
2004, (with R. L. Goldberg)
C/NOFS: a
Potential distribution
around sounding rockets in mesospheric layers with charged aerosol particles, GEOPHYSICAL
RESEARCH LETTERS, accepted, Oct. 2004, (In press) (with Z. Sternovsky, M. Horányi and S.
Robertson)
Balloon Observations
of Temporal and Spatial Fluctuations in Stratospheric Conductivity, Submitted
to Elsevier Science, October, 2004,
(with Edgar A. Bering, III, Brandon D. Reddell , Michael F. Kokorowski , Akira Kadokura , Hisao Yamagishi , Natsuo Sato, Masaki Ejiri, Haruto Hirosawa,
Takamasa Yamagami, Shoji
Torii, Fumio Tohyamaf, Michio
Nakagawa, and Toshimi Okada
Strong
electric fields from positive lightning strokes in the stratosphere, Geophys. Res. Lett., V. 32, L04809, doi:10.1029/2004GL021554, 2005 (with M. P. McCarthy, J. N. Thomas, J. Chin, T. M. Chinowsky, M. J. Taylor, and O. Pinto Jr.,)
Latitude gradients in the natural variance in
stratospheric conductivity - Implications for studies of long-term changes
Source: Advances in Space Research, v 35, n 8 SPEC. ISS., 2005, p
1385-1397 (with Bering III, E.A.,Benbrook,
J.R.; Byrne, G.J.; Gupta, S.P.)
.Lightning sferics and stroke-delayed pulses measured in the stratosphere:
Implications for mesospheric currents, Geophysical Res. Lett,
VOL. 32, L22807, doi:10.1029/2005GL024629,
2005 (with Thomas, Jeremy N, Michael
P. McCarthy, and Osmar Pinto Jr)
Balloon observations
of temporal variation in the global circuit compared to global lightning
activity, Advances in Space Research 36 (2005)
2223–2228
Predicting lightning-driven
quasi-electrostatic fields at sprite altitudes usin
in situ measurements and a numerical model, Geophysical
Research Letters, v 32, n 10,
Balloon observations of temporal and spatial fluctuations in
stratospheric conductivity, Advances in Space Research, v 35, n 8, 2005, p 1434-49 (with Bering, E.A., III, Reddell, B.D.
; Kokorowski,
M.F.; Kadokura, A.; Yamagishi,
H.; Sato, N.; Ejiri, M.; Hirosawa,
H.; Yamagami, T.; Torii, S.; Tohyama,
F.; Nakagawa, M.; Okada, T.,)
Rapid fluctuations of stratospheric electric
field following a solar energetic particle event, Geophysical
Research Letters, v 33, n 20, 28 Oct. 2006,
p 6 pp (with Kokorowski, M., Sample,
J.G.., Bering, E.A.; Bale, S.D.; Blake, J.B.; Collier, A.B.; Hughes, A.R.W.;
Lay, E.; Lin, R.P.; McCarthy, M.P.; Millan, R.M.; Moraal, H.; O'Brien, T.P.; Parks, G.K.; Pulupa,
M.; Reddell, B.D.; Smith, D.M.; Stoker, P.H.; Woodger, L.)
Detection efficiency of the
VLF World-Wide Lightning Location Network (WWLLN): initial case study,
Ann. Geophys., 24, 3197–3214, 2006 (with Rodger, C. J., S. Werner,
J. B. Brundell, E. H. Lay, N. R. Thomson, and R.
L. Dowden)
Performance assessment of
the World Wide Lightning Location Network (WWLLN), using the Los Alamos Sferic Array (LASA) as ground truth Source: Journal of Atmospheric and Oceanic Technology,
v 23, n 8, Aug. 2006, p 1082-92 (with
Jacobson, A.R., Harlin,
J.; Dowden, R.; Lay, E.)
A Very
Active Sprite-Producing Storm Observed Over Argentina, Eos, Vol. 88, No. 10, 6 March 2007, PAGES 117–128 (My post doc) (with Thomas,
Jeremy N; Michael J. Taylor, Dominique Pautet, and
Matthew Bailey,; Natalia N. Solorzano,,
Michael P. McCarthy, Michael Kokorowski, Fernanda Sao Sabbas, Osmar Pinto Jr; Steven A. Cummer, Nicolas Jaugey, and Jingbo Li, Nelson Jorge Schuch)
Local Time Variation in Land/Ocean Lightning Count
Rates as Measured by the World Wide Lightning Location Network, Journal of Geophysical Research-Part D-Atmospheres, v
112, n 13, 16 July 2007, p
D13111-1-9 (with Lay, Erin, H., Abram
R. Jacobson, Craig J. Rodger, and
Richard L. Dowden)
Low-frequency ionospheric
sounding with Narrow Bipolar Event lightning radio emissions:
energy-reflectivity spectrum, Ann. Geophys., 26,
1793-1803, 2008 (with Jacobson
A. R. and X.-M. Shao)
Rare Measurements
of a Sprite with Halo Event Driven by a Negative Lightning Discharge Over
Magnetospheric electric
field variations caused by storm-time shock fronts, Advances in Space Research,
v 42, n 1, 1 July 2008, p 181-91 (with Kokorowski, M., Bering, E.A., III; Ruohoniemi,
M.; Sample, J.G..; Bale, S.D.; Blake, J.B.; Collier, A.B.; Hughes, A.R.W.; Lay,
E.H.; Lin, R.P.; McCarthy, M.P.; Millan, R.M.; Moraal, H.; O'Brien, T.P.; Parks, G.K.; Pulupa,
M.; Reddell, B.D.; Smith, D.M.; Stoker, P.H.; Woodger,)
In situ measurements of
contributions to the global electrical circuit by a thunderstorm in
southeastern
Lightning-driven electric fields measured in the lower
ionosphere: Implications for transient luminous events, J. Geophys.
Res. (Space Physics) Accepted and in press, (2008JA013567R), 2008 (with Thomas, J. N., B. H. Barnum, E. H. Lay,
M. Co and M. C. Kelley)
(updated Nov 2008)
|
|
Space Physics Home Page. |
|
ESS Home Page. |
![[To Home Page]](space.gif){kind=small}
![[To Geophysics Page]](home.gif){kind=small}