Ph.D. in Meteorology, May 1989
University of Wisconsin-Madison
Dissertation title:
"Hail Growth in a Highly Glaciated Central High Plains Multi-cellular
Hailstorm"
Dissertation Advisor: Dr. Pao
Wang
M.S. in Geophysical
Sciences, August 1986
University of Wisconsin-Milwaukee
Thesis title: "A
Mesoscale Numerical Study of Environmental Conditions Preceding the 08
June 1984
Tornado Outbreak over South Central Wisconsin"
Thesis Advisor: Dr.
Robert Ballentine
B.S. in Geophysical
Sciences, December 1984
University of Wisconsin-Milwaukee
Aug.
1996 - Present, Associate Professor, School of Meteorology, University
of Oklahoma
Aug. 1990 - 1996, Assistant
Professor, School of Meteorology, University of Oklahoma
Jan. 1989 - Aug. 1990, Research
Associate-Post Doctorate position, Space Science and Engineering
Center,
University of Wisconsin, Madison (with Dr.
John R. Anderson)
Sept.1984 - Jan. 1989 Research
and teaching assistant in the University of Wisconsin system
1986 - Schwerdtfeger Award: Best academic record during first
year of graduate studies at the
University of Wisconsin-Madison (based on course
load, difficulty, and GPA)
Tornadogenesis
Supercell dynamics
Theory and parameterization of cloud and precipiation processes
Intepretation of Polarimetric radar data
Observational and numerical modeling of thunderstorms
microphysics
hail
lightning processes
Numerical Techniques for
Fluid Flow
Dynamics and numerical modeling of
mammatus clouds
Some tornadogenesis results:
Vortex-line arching with
a downdraft next to an updraft
Schematic of Walko’s (1993)
hypothesis and two versions
of the arching
hypothesis. The letters “A” (“C”) denote
cyclonic (anticyclonic),
solid lines are
vortex lines, and
t1, t2, and t3 are
increasing relative time increments.
From Straka, Rasmussen,
Davies-Jones and Markowski
(EJSSM, 2007)
Field observing instruments
Mobile
Mesonet Instruments
Straka, J. M., E. N.
Rasmussen and S. E. Fredrickson, 1996: A mobile mesonet
for
fine-scale meteorological observations. J. Atmos. Oceanic Tech.,
13, 921-936.
• Students
• Student Committees
• Full List of Peer-Reviewed Publications
•
Full List of Non Peer-Reviewed Publications
• Recent List of Collaborators:
Katharine M. Kanak
Erik Rasmussen
Matthew Gilmore
Robert Davies-Jones
Ted Mansell
Bob Wilhelmson
Mike Biggerstaff
Lou Wicker
Ming Xue
Dusan Zrnic
Aaron Kennedy
Paul
Markowski
Brian Argrow
Eric Frew
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J. Straka 2007
Last update: 11-15-07