Research Activities Since 1990
Helped lead organization of Verification of the Origin of Rotation (VORTEX-1994/1995)

Asst. Director/Organizer/Field Coordinator for Verification of the Origin of Rotation in  Tornadoes Experiment (VORTEX) field program -1994/1995.  (with VORTEX
 director Dr. E. Rasmussen at NSSL).
 -Co-Directed, organized, and planned the VORTEX field program (with Dr. E.
  Rasmussen).  Co-principle forecaster for VORTEX field program.
 -Wrote and lead numerous proposals for VORTEX base funding, aircraft (T-28)
  and CLASS facilities, ARM collaboration, and NWS involvement
 -Developed and constructed the new Mobile Mesonet  (with Dr. E. Rasmussen),
  Instrument packages deployed in tornadoes (with Dr. E. Rasmussen), and
  the new mobile X-band pulsed Doppler radar (with Drs. J. Wurman and E.
  Rasmussen).  Wrote and lead the proposals to support these projects.
 -Obtained the first pulsed-Doppler radar and detailed surface weather observations
  of tornadoes within 3 km distance (with Drs. J. Wurman and
  E. Rasmussen).
 -Participated in planning the Center for Analysis and Prediction of Storms (CAPS)
  storm-scale numerical weather prediction effort.
 -Lead the VORTEX-1995 NSF/NOAA sponsored Research Experience for
  Undergraduates (REU) program (with Dr. W. Beasley).  Wrote the
  proposal to NSF (with Beasley)

Co-Organizer/Coordinator for Radar-Hydrometeor Verification I and II field programs   with the Cimarron Radar (1994-1995, with Dr. D. Zrnic' at NSSL).
 -Wrote successful T-28 research aircraft proposals in 1994 and 1995

Co-Organizer for Radar-Hydrometeor Verification with CSU/CHILL field
 program (1995; with Drs. D. Zrnic' at NSSL and S. Rutledge and Bringi at CSU).
 -Wrote successful T-28 research aircraft proposal in 1995

Modest collaboration with SCMS field program through University of Oklahoma Ph.D.
 student Ms. Sonia Lasher-Trapp and Dr. Charles Knight at NCAR.
 Obtained funding from NSF to support Ms. Lasher-Trapp.  This work is on the
 onset of coalescence in cumulus using observations from SCUM and my
 numerical model.

Studying tornado and tornadic storm formation, maintenance, and dissipation hypotheses
 using VORTEX data including information from mobile mesonet, rawinsonde,
 stationary, mobile pulsed Doppler radar, and airborne Doppler radar.
 -co-wrote new proposal to NSF to support post-field phase research.

Developed the first fuzzy-logic based hydrometeor identification and quantification
 algorithm using multiparameter radar data.  Ongoing evaluation based on  cloud/radar model results (with Dr. Vivekandan at NCAR) as well as actual radar)  using in-situ aircraft measurements (with Dr. Zrnic' at NSSL).  The purpose of this
 research is to learn more about precipitation processes, improve and verify  microphysical parameterizations, and initialize moisture variables in storm-scale  numerical weather prediction models with radar data.  The NWP work involves
 investigating both forward and variational assimilation approaches.

Helped write and plan the Center for Analysis and Prediction of Storms (CAPS) renewal  proposal in 1994.  Made numerous presentations for the renewal process, as well   as for the yearly NSF and External Advisory Panel evaluations over the past four
 years.  I helped initiate the CAPS storm-scale prediction effort.

Developed, over the past 7 years, a complete cloud/mesoscale model with detailed
 microphysics including number concentration, mixing ratio, and numerous habits  (including rain, snow crystals, snow aggregates, three graupel density categories,
 hail, and various ice crystal habits).  As part of this work I recently have developed
 new methods that will help improve conversion parameterizations.

Modified my numerical model to include electrical charging mechanisms, and a crude
 lightning parameterization to study the effects of supercell storm characteristics on
 lightning flash type and rates (with Drs. MacGorman and Ziegler at NSSL).

Involved with Drs. Lamb and Sasaki (OU) in developing possible research funding  opportunities in regards to radar meteorology studies with Japan power companies.  Two contracts, one for $20,000 and another for $7,500 have been  obtained for this work.

Numerous visits to NCAR to Boulder, Colorado 1995 for scientific collaboration

Re-started atmosphere/sea coupled model effort in my model, 1995.

Organized invitation to speak to Governor of Oklahoma and media concerning cloud
seeding effectiveness and methodology (March 20, 1996).  Other meetings with
 congressmen and senators followed.

Numerous visits to NCAR to Boulder, Colorado 1996 for scientific collaboration
 These visits included attending part of a astrophysics/meteorology workshop

Numerous visits to NCAR at Boulder, Colorado 1997 for scientific collaboration
 These visits included work with VORTEX data (with E.N. Rasmussen)
 These visits included work to develop new microphysical techniques (with E.N.  Rasmussen)

Participated in small experiment in the Spring of 1997 to study boundaries of storms
 forming in environments with strong storm relative helicity (Rasmussen, Straka,
 and Markowski)

Participated and funded 60% (OU Weather Center funded remaining 40%) of program sub-
 VORTEX during 6 week period in May and early June of 1997 to continue our
 studies of tornadic storms..  The first dual doppler data with the mobile radars were
 collected as well a data from other storms (collaborators included E.N. Rasmussen,
 R. Davies-Jones and J. Wurman).

Participation in CAPS site visit (November 1997)

Participation in planning meeting for first phase of major field program designated as
 Thunderstorm  Initiation Mobile Experiment (TIMEX) Nov 17-18 1997

Participation in VORTEX workshop (1-3 December 1997) in Monterey, California

New experiments with lightning parameterization in my numerical model were presented at
 the Fall 1997 AGU meeting by D. MacGorman

Invited to visit JAMSTEC, Japanese Space Agency, and University of Tokyo (2-8
February 1998) to give seminars on a) Microphysics paramertizations-
developments and challenges; b) Dual-polarimetric radar to identify and quantify hydrometeors; c)  Cloud intialization (fro Dr. F. Carr and Ms. J Zhang); d) Coupled ocean/atmosphere models; e) cumulus parameterizations and f) Tornadogenesis-a review and new concepts.  I also went to help work with IBM and the ARPS model.

Experiment to examine small scale variability of storm-relative helicity
(1997-1998) (Rasmussen, Straka, Markowski).

Experiment (Tornadogenesis and RFD studies) to examine RFD of tornadic storms
(Rasmussen, Straka, Davies-Jones; May-June 1998).

TiMEX test (Spring 1998) (Rasmussen, Straka, Ziegler, Schneider)

MEaPERS (Spring 1998) (collaboration with Terry Schuur and Dusan Zrnic)

LPEX program initiation (collaboration with PI’s Knight and Weisman)

Ice Microphysics Initiative team member (July 9-10, 1998) at NCAR-Mesa Lab.
Issues on observations, laboratory work, theory, and modeling of ice
microphysics, seeking funding, setting agenda for key problems, and writing BAMS paper. Invited speaker.

Paper nominated for "paper of the year" at ERL (1998) (No co-author was a federal
Employee so it didn’t qualify)

Hurricane at Landfall (HaL) Experiment 1999:  Coordination of most ground-observations
teams for the NOAA-Hurricane Research Division (HRD) for Hurricane "Georges"
(September 1998)

Experiment (Tornadogenesis and RFD studies) to Examine RFD of Tornadic Storms
and Drylines in 1999 (Rasmussen, Straka; May-June 1999)

Paper nominated for "paper of the year" at ERL for 1999 (Did not win as no co-author was
a Federal Employee so it didn’t qualify)

Hurricane at Landfall (HaL) Experiment 1999:  Coordination participant of ground-
observations teams (collaboration with Doggett and Schroeder at TTU; Rasmussen
at NSSL; Knupp at UAH) with the NOAA-Hurricane Research Division (HRD; and
Marks, Houston, Black, Willoughby) for Hurricane "Dennis" (September 1999;
coordination with TTU / Clemson / HRD) and Hurricane "Floyd" (September 1999;
coordination and intercept with TTU / Clemson / UAH / HRD).

co-PI Severe Thunderstorm Electrification  and Precipitation studies: STEPS Spring 2000