WMOD00307

• Title: A Proposal for Cooperative Weather Research Between the Santa Barbara County Water Agency and the US Department of Interior Bureau of Reclaimation in the Context of the Weather Damage Modification Program through the State of CA 2002-2003 Winter Season
• Date: 10/17/2002
• State: CA
• Weather Modification - Doc Type: Report

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Hans earned a Bachelor's degree in Business Administration from the University of North
Dakota where he majored in Aviation Administration. He holds a commercial pilots license with
Single-/Multi-engine and instrument ratings and is a multi-engine/instrument flight instructor,
FAA Airframe & Powerplant mechanic, and an authorized maintenance inspector. He has been
with WMI since 1985, most recently as Chief Pilot. Hans is a member of the Aircraft Owners
and Pilots Association, and holds the Certified Operator designation from the Weather
Modification Association.

James Heimbach, Modeler

Dr. James A. Heimbach, Jr., has been the principal investigator of private and institutional air
pollution, climatological, and weather modification studies having funding totaling over
$1,300,000. His projects included investigations of the climatological aspects of air pollution
potential for power plants and strip mines, atmospheric aerosol measurements, diffusion of
aerosols from ground-based and elevated sources and their tracing, statistical analyses of weather
modification data, characteristics of rainfall in eastern Montana, the evaluation of weather radar
data, climatological research, surface characteristics of mesoscale convective complexes and
their triggers, paleoclimatological trends of drought, the feasibility of surface-based seeding of
convective clouds in Alberta, and the winter cloud seeding potential for the Bridger Range.
While at the University of North Dakota, he was responsibility for the field operations of the
University's radar and rawinsonde facilities, and analyses of these data.

From 1983 to 1985 he was the principal investigator for the NSF grant uApplication of 1981
Mesonet Data to Describe Physical Processes of Convective Storm Initiation and Evaluationu.
During 1985 and 1986, he conducted a UPhysical Evaluation of the Statistical Suggestions from
the Bridger Range ExperimentU, funded through the National Science Foundation. Airborne
microphysical measurements were made within winter storms that were seeded with a
ground-based AgI- e generator. The intent was to document the supercooled water
content of these sto . ng effectiveness, and the influences of seeding on ice crystal size,
concentration, and _ ~__ .;",,< experiment was prompted by the encouraging statistical findings
of an earlier experim' .~ . ~{\ hich hr was involved. In addition, the Research Aviation Facility
of the National Cente ospheric Research contributed aircraft and personnel resources to
this project.

At the University olina at Asheville, he was directly involved with research piggy-
backed on the Ut I winter storm augmentation program. The intent of the research
was to examine <> . seeding techniques to determine their effectiveness and to
recommend change~~ . the early 1991 and early 1994 field seasons, he was the aircraft
scientist for a Beec ' . JIg Air provided by NOAA, used to measure physical parameters of
winter storms. The 19hts were designed to track surface-released AgI and SF6 over
mountainous terrain and take the measurements necessary to determine targeting efficiency and
the microphysical effects of seeding.

At Montana State University he taught a majority of the meteorological courses leading to a BS
in Meteorology. The applied aspects of meteorology were stressed and students graduating from
this curriculum were well-received in their profession. While at the University of North Dakota
Weather Damage Modification Program 19