NorthWest Research Associates

Excellence in Basic & Applied Research

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Group: Scientists & Engineers Administration Students Affiliates

Location: Boulder Redmond Monterey Off-site

⇑ Top Joan Alexander, PhD
Vice President, Senior Research Scientist, Director - Boulder, CO
alexand@nwra.com
(303) 415-9701 x204
Personal website

Research interests: Atmospheric Sciences. Atmospheric dynamics, waves, convection, global circulation modeling, mesoscale modeling, satellite, aircraft, balloon-borne observations, and middle atmosphere studies

⇑ Top Ed Andreas, PhD
Senior Research Scientist


Curriculum vitae | Personal website

Research interests: Boundary-layer meteorology: In particular, air-sea interaction in high winds and the effects of spray; air-sea-ice interaction; scintillation and electro-optical propagation in the atmospheric surface layer; fundamental turbulence issues such as Monin-Obukhov similarity theory, time series analysis, and measurement physics; technical writing.

It is with regret that we inform you that Ed Andreas passed away on 30 September 2015. We will miss him for his original and careful scientific thinking. He was a kind person and a classic gentlemen in all regards. If you need to contact someone at NWRA, please email Joan Oltman-Shay, President of NWRA at j.oltman.shay@nwra.com or call 425 556 9055 x0.

⇑ Top Mark Baldwin, PhD
Affiliate Scientist, Director
m.baldwin@exeter.ac.uk

Curriculum vitae | Personal website

Research interests: Atmospheric Sciences. The Arctic Oscillation, stratosphere-troposphere coupling, and propagation of planetary-scale waves in the troposphere and stratosphere.

⇑ Top Debbi Bardsley, B.S. HRM
Manager of Human Resources - Redmond, WA
debbi@nwra.com
(425) 556-9055 x213

⇑ Top Graham Barnes, PhD
Senior Research Scientist - Boulder, CO
graham@nwra.com
(303) 415-9701 x234
Curriculum vitae

Research interests: Space Physics. Magnetohydrodynamics, numerical modeling of space plasmas.

⇑ Top Janet Biggs
Operations Manager - Boulder, CO
janet@nwra.com
(303) 415-9701 x247

⇑ Top Aaron Birch, PhD
Affiliate Scientist
birch@mps.mpg.de

Curriculum vitae

Research interests: Solar physics, local helioseismology, solar interior.

⇑ Top Connor Bracy
Student Intern - Redmond, WA



⇑ Top Douglas Braun, PhD
Vice President, Senior Research Scientist, Director - Boulder, CO
dbraun@nwra.com
(303) 415-9701 x226
Personal website

Research interests: Space Physics - solar and astrophysics. Local helioseismology, solar interior.

⇑ Top Greg Bullock, PhD
Research Scientist - Monterey, CA
greg@nwra.com
(831) 582-4907
Curriculum vitae
⇑ Top Drew Camron
Graduate Student Intern - Boulder, CO
michael.camron@colorado.edu
(303) 415-9701 x211

Research interests: Drew is a first-year graduate student in the Atmospheric and Oceanic Sciences (ATOC) at CU with Joan Alexander as his thesis advisor. Drew will be studying tropical convective clouds and precipitation and their relationships to atmospheric gravity waves, with the aim of improving NCAR climate simulations. Drew will also be collaborating with other scientists connected to his project who are at NCAR and Texas A&M Corpus Christi.

⇑ Top Alexandra Cherkassky, MS
Senior Accountant - Redmond, WA
alexandra@nwra.com
(425) 556-9055 x217

⇑ Top Eric Danioux, PhD
Affiliate Scientist
edanioux@gmail.com

Curriculum vitae

Research interests: Inertia-gravity waves. Geophysical turbulence. Interaction between balanced and unbalanced motions. Mixed layer dynamics.

⇑ Top Donald Delisi, PhD
Founder, Chairman of the Board, Executive Vice President, Senior Research Scientist - Redmond, WA



Research interests: Acquisition, analysis, and interpretation of laboratory and field measurements of vortex evolution, internal waves, and turbulent flows; comparisons of field data with laboratory measurements and numerical simulations; experimental fluid mechanics; analysis and interpretation of atmospheric and oceanic flows.

⇑ Top Bergen Delisi
Data Aid - Redmond, WA
bergen@nwra.com


⇑ Top Tim Dunkerton, PhD
Vice President, Senior Research Scientist, Director - Redmond, WA
tim@nwra.com
(425) 556-9055 x326
Curriculum vitae | Personal website

Research interests: Atmospheric Sciences Dynamic meteorology, atmospheric general circulation.

⇑ Top Phil Dunkerton
Research Assistant - Redmond, WA
pdunkerton@yahoo.com


⇑ Top Jeffrey Early, PhD
Research Scientist - Redmond, WA
jearly@nwra.com

Curriculum vitae | Personal website

Research interests: Mesoscale and large scale physical oceanography; the application of symmetry methods to geophysical fluid dynamics

⇑ Top Wayne Evans, PhD
Affiliate Scientist


Curriculum vitae

Research interests: Remote sensing of atmospheric gases and radiation from satellites. Radiative forcing of climate by greenhouse gases, cirrus clouds and relative humidity, detection of new airglow emissions, absorption of solar NIR by precipitating clouds.

⇑ Top Jonathan Fentzke, PhD
Affiliate Scientist


Curriculum vitae

Research interests: Research focus on Mesosphere and Lower Thermosphere (MLT) studies including modeling, simulation, and data fusion using Incoherent Scatter Radar (ISR) and Lidar. Interests include collisional plasma processes in the E-Region of the Ionosphere as well as meteoric smoke measurements and their relation to the Micrometeoric Input Function (MIF).

⇑ Top Talida Fodorean, CPA, CIA
Manager of Accounting - Redmond, WA
talida@nwra.com
(425) 556-9055 x340

⇑ Top John (Juan) Fontenla, PhD
Senior Research Scientist - Boulder, CO
jfontenla@nwra.com
(303) 415-9701 x227
Curriculum vitae
⇑ Top Andrew Frahm
Proposal Administrator - Boulder, CO
frahm@nwra.com
(303) 415-9701 x200

⇑ Top Edward Fremouw, PhD
Founder, Emeritus


Personal website

Research interests: Near-Earth Space Science: ionospheric physics (satellite experiments & radiowave tomographic imaging) and radio propagation (scintillation observations & modeling).

⇑ Top Sergey Fridman, PhD
Senior Research Scientist - Monterey, CA
sergey@nwra.com
(831) 582-4902
Curriculum vitae

Research interests: Electromagnetic propagation in randomly structured ionization; Robust methods for solution of inverse problems and ill-posed problems; Ionospheric modeling for Over-the-Horizon radar coordinate registration; VHF/UHF ionospheric propagation and scintillations; Advanced signal processing for radar.

⇑ Top Andrew Geiss
Research Assistant - Redmond, WA
andrew@nwra.com


⇑ Top Stuart Gilchrist, PhD
Postdoctoral Research Scientist - Boulder, CO
sgilchrist@nwra.com
(303) 415-9701 x233
Curriculum vitae
⇑ Top Alice Gregory
Manager of Corporate Matters - Redmond, WA
alice@nwra.com
(425) 556-9055 x312

⇑ Top Alison Grimsdell, PhD
Research Scientist - Boulder, CO
grimsdell@nwra.com
(303) 415-9701 x211
Curriculum vitae
⇑ Top Heidi Guerrero, MBA
Senior Accountant - Redmond, WA
heidi@nwra.com
(425) 556-9055 x333

⇑ Top Mark Hausman, PhD
Senior Research Scientist - Monterey, CA
markhausman@nwra.com
(831) 582-4903
Curriculum vitae

Research interests: Research focus is on computer programs that model complex physical systems, specifically simulations and studies of ionospheric and space physics, and their effects on radar and communications systems. Fields of expertise include data translation (e.g., raw radar data from ROTHR and BMEWS) and data visualization.

⇑ Top Thomas Herbers, PhD
Senior Research Scientist - San Diego, CA
herbers@nwra.com

Curriculum vitae
⇑ Top Laura Holt, PhD
Research Scientist - Boulder, CO
laura@nwra.com
(303) 415-9701 x239
Curriculum vitae
⇑ Top ChuanLi Jiang, PhD
Affiliate Scientist
chuanli@nwra.com

Curriculum vitae | Personal website

Research interests: My research interests focus on the air-sea interactions and the ocean’s role in climate variations. Of special interest to me are air-sea exchange of heat and CO2, sea level rise, air-sea interactions at ocean fronts and mesoscale eddies, upper ocean heat and momentum balances, and atmosphere boundary layer dynamics. I have combined satellite and in-situ measurements and numerical modeling to address these topics in the Pacific and in the Southern Ocean.

⇑ Top Dennis Knepp, PhD
Senior Research Scientist - Monterey, CA
dennis.knepp@nwra.com
(831) 582-4906
Curriculum vitae
⇑ Top Yefim Kogan, PhD
Senior Research Scientist - San Diego, CA
ykogan@nwra.com

Curriculum vitae

Research interests: Microphysics of clouds and precipitation, aerosol-cloud-precipitation interactions, parameterization of clouds and precipitation for mesoscale weather prediction and global climate models.

⇑ Top Shawn Kraut, PhD
Research Scientist - Monterey, CA
shawn@nwra.com
831-655-4261
Curriculum vitae
⇑ Top Eric Kunze, PhD
Senior Research Scientist - Redmond, WA
kunze@nwra.com

Curriculum vitae

Research interests: Understanding and parameterizing the effects of smallscale ocean processes on large scales, including the impacts of internal waves, turbulence, fronts, double diffusion and stratified turbulence.

⇑ Top David Lai, PhD
Affiliate
dlai@nwra.com

Curriculum vitae

Research interests: Ocean and Earth Sciences, Fundamental Fluid Mechanics. Turbulence, vortices, remote sensing.

⇑ Top Zachary Lawrence
Research Assistant - New Mexico
zdlawrence@nwra.com


⇑ Top KD Leka, PhD
Senior Research Scientist - Boulder, CO
leka@nwra.com
(303) 415-9701 x219
Curriculum vitae | Personal website

Research interests: Space Physics. Solar physics, solar magnetic fields, sunspots and solar active regions, solar flares, polarimetry and instrumentation.

⇑ Top Pascale Lelong, PhD
Senior Research Scientist, Director - Redmond, WA
pascale@nwra.com
(425) 556-9055 x336
Curriculum vitae | Personal website

Research interests: Ocean and Earth Sciences. Geophysical fluid dynamics; perturbation and asymptotic methods; numerical modeling.

⇑ Top Gad Levy, PhD, CCM
Senior Research Scientist - Redmond, WA
gad@nwra.com
(425) 556-9055 x324
Curriculum vitae | Personal website

Research interests: Atmospheric Sciences, Ocean and Earth Sciences

⇑ Top Beate Liepert, PhD
Senior Research Scientist - Redmond, WA
liepert@nwra.com
(425) 556-9055 x306
Curriculum vitae | Personal website

Research interests: Climate variability from inter-annual to centennial time scales, water and energy cycle in a changing climate. Global dimming and brightening and its implications for climate including the water and carbon cycles. In-situ measurements of air pollution and radiative properties in urban and suburban environments on board hot-air balloons.

⇑ Top Jonathan Lilly, PhD
Senior Research Scientist - Redmond, WA
lilly@nwra.com

Curriculum vitae | Personal website

Research interests: Oceanic vortex structures, deep convection, time / frequency analysis methods, wave-wave interactions, and satellite oceanography.

⇑ Top Charles Lindsey, PhD
Senior Research Scientist - Boulder, CO
lindsey@nwra.com
(303) 415-9701 x238
Curriculum vitae
⇑ Top Fiona Lo, MS
Support Scientist - Redmond, WA
fiona@nwra.com
(425) 556-9055 x315
Curriculum vitae
⇑ Top Thomas Lund, PhD
Senior Research Scientist - Boulder, CO
lund@nwra.com
(303) 415-9701 x209
Curriculum vitae
⇑ Top Larry Mahrt, PhD
Senior Research Scientist - Corvallis, OR
mahrt@nwra.com
(541) 754-7501
Curriculum vitae

Research interests: Boundary layers and turbulence, evapotranspiration, air-sea interaction, bouyancy-driven slope flows, micrometeorology.

⇑ Top Gloria Manney, PhD
Senior Research Scientist - New Mexico
manney@nwra.com
505 414 8887
Curriculum vitae
⇑ Top Michael Matthews, Ph.D.
Senior Research Scientist - Monterey, CA
matthews@nwra.com
831-402-4678
Curriculum vitae

Research interests: Estimation and detection theory, statistical signal processing, digital communications, real-time processing, and software-defined radio.

⇑ Top Laurie Medsker
Administrative Assistant - Redmond, WA
laurie@nwra.com
(425) 556-9055 x331

⇑ Top Philip Mote, PhD
Affiliate Scientist
pmote@coas.oregonstate.edu

Personal website

Research interests: Studies of clouds, water vapor, and radiation in the tropical upper troposphere and lower stratosphere.

⇑ Top Andreas Muschinski, PhD
Senior Research Scientist - Boulder, CO
andreas@nwra.com
(303) 415-9701 x228
Curriculum vitae

Research interests: Atmospheric Physics. Atmospheric turbulence and waves; atmospheric remote sensing; optical, acoustic, and radio-wave propagation through the turbulent atmosphere; boundary-layer meteorology; atmospheric measurement science.

⇑ Top LJ Nickisch, PhD
Vice President, Senior Research Scientist, Director - Monterey, CA
lj@nwra.com
(831) 582-4905
Curriculum vitae

Research interests: Theoretical physics; computational physics and numerical simulation; electromagnetic propagation in randomly structured ionization; HF communication and signal specification in nuclear environments; over-the-horizon radar; VHF/UHF radar ionization-induced propagation effects; stochastic electrodynamics and ZPF-related physics.

⇑ Top Joan Oltman-Shay, PhD
President, Senior Research Scientist, Director - Redmond, WA


Personal website

Research interests: Science Research in Nearshore Processes. Since graduating from Scripps in 1986, she has spent much of her technical career performing field and model studies of nearshore (shoreline to nominally 10m depth) wave and current dynamics and the interplay with sediment- and morpho-dynamics. e-mail: j[dot]oltman[dot]shay[at]nwra[dot]com

⇑ Top David Ortland, PhD
Senior Research Scientist - Redmond, WA
ortland@nwra.com
(425) 556-9055 x309
Curriculum vitae

Research interests: Atmospheric sciences. Atmospheric and mathematical science.

⇑ Top Cameron Parkhurst
Systems Administrator & Business Intelligence Engineer - Redmond, WA
cameron@nwra.com


⇑ Top Jasna Pittman, PhD
Research Scientist - Alabama
jasna@nwra.com

Curriculum vitae

Research interests: Stratosphere-troposphere exchange, atmospheric dynamics, atmospheric chemistry, greenhouse gases, stratospheric humidity, airborne measurements, satellite observations, chemistry-climate modeling.

⇑ Top Orion Poplawski
Technical Manager, Boulder - Boulder, CO
orion@cora.nwra.com | orion@nwra.com
(303) 415-9701 x222
Curriculum vitae

Research interests: Computer and Network Administration, Software Development.

⇑ Top Matthew Pruis, PhD
Affiliate
matt@sagedata.science

Curriculum vitae

Research interests: Experience in data analysis, turbulence and mixed layer processes, and data-model comparison studies. Research projects ranging from studies of the near-shore coastal environment, to deep-sea hydrothermal vents, to sea-ice modeling and field projects in the Arctic, to aircraft wake vortices. Recent work has included the A380 wake separation study group and participation in the FAA's ReCat Phase I project to reduce aircraft wake separation.

⇑ Top Robert Robins, PhD
Affiliate Scientist
rerscicomp@gmail.com

Curriculum vitae

Research interests: Computer modeling of hydrodynamic phenomena, including vortex evolution, internal wave propagation, and turbulent dissipation; validation of computer models by comparison of computer results with observational data; processing and visualization of scientific data; diversified computing experience: various micro, mini, main-frame, and super computer systems.

⇑ Top Penny Rowe, PhD
Research Scientist - Redmond, WA
penny@nwra.com
(425) 556-9055 x317
Curriculum vitae

Research interests: The interaction of clouds and trace gases with infrared radiation, particularly in Polar regions. Black carbon and other light-absorbing impurities in snow in Antarctica and the Chilean Andes. Scanning electron microscopy of ice crystals. Molecular dynamics calculations of ice.

⇑ Top Blake Rutherford, PhD
Research Scientist - Redmond, WA
blake@nwra.com
(425) 556-9055 x320

⇑ Top David Schecter, PhD
Research Scientist - Boulder, CO
schecter@nwra.com
(303) 415-9701 x215
Personal website

Research interests: Atmospheric Research

⇑ Top Richard Scott, PhD
Senior Research Scientist - Redmond, WA
scott@nwra.com

Personal website

Research interests: Atmospheric Sciences, Fundamental Fluid Mechanics. Atmospheric Dynamics, Vortex Dynamics, Numerical Modeling, Geophysical Fluid Dynamics.

⇑ Top James Secan, MS
Senior Research Scientist - Redmond, WA
jim@nwra.com

Curriculum vitae

Research interests: Space physics. Ionospheric physics (modeling, observations, data analysis), space weather (effects of the space environment on satellite, communications, and navigation systems), and operational software design and implementation.

⇑ Top Dana Shay, CPCM
Manager of Contracts & Grants - Redmond, WA
dana@nwra.com
(425) 556-9055 x310

⇑ Top Ken Smalls
Accounts Receivable, Senior Accountant - Redmond, WA
ken@nwra.com
(425) 556-9055 x218

⇑ Top Francis Smith
Affiliate Engineer



Research interests: Data acquisition systems, data analysis (time and frequency domain), industrial process control (stability analysis and hardware selection), analog/digital circuit design, electro-optical systems, microprocessor system design, heat-exchanger design.

⇑ Top Natalia Solorzano, Ph.D.
Space Geophysics - Redmond, WA
natalia@nwra.com


⇑ Top Chad Spooner, PhD
Senior Research Scientist - Monterey, CA
cmspooner@nwra.com
(831) 582-4904
Curriculum vitae

Research interests: Instruments and Software, Statistical Signal Processing, Higher-Order Statistics, Cyclostationary Signals, and Automatic Signal Classification

⇑ Top Claudia Stephan, PhD
Affiliate Scientist
c.c.stephan@reading.ac.uk


Research interests: I am using the WRF model to study convectively induced gravity waves.

⇑ Top Jeremy Thomas, PhD
Research Scientist - Redmond, WA
jeremy@nwra.com

Curriculum vitae | Personal website

Research interests: I study geophysical electric and magnetic fields to further our understanding of Earth's atmosphere and space environment. Topics include lightning, middle atmospheric discharges such as sprites and ELVES, solar-terrestrial effects in the ionosphere and magnetosphere, and reports of geomagnetic and ionospheric precursors to earthquakes.

⇑ Top Shiril Tichkule
Graduate Student Intern
shiril.tichkule@colorado.edu
(303) 415-9701 x243

Research interests: I study the propagation of optical waves through turbulence in the atmospheric boundary layer, with a focus on developing statistical estimators for the remote retrieval of atmospheric variables such as the horizontal wind velocity.

⇑ Top Elena Tolkova, PhD
Affiliate Scientist
e.tolkova@gmail.com

Personal website

Research interests: Research areas: Tsunami dynamics; numerical modeling; time-series analysis

⇑ Top Cynthia Twohy, PhD
Senior Research Scientist - San Diego, CA
twohy@nwra.com

Curriculum vitae

Research interests: Aerosol-cloud-climate interactions, dust and biological aerosol particles, aerosol and cloud physics measurement, particularly from aircraft

⇑ Top Susan Twomey
Project Budget Administrator - Redmond, WA
sue@nwra.com
(425) 556-9055 x301

⇑ Top Sharon Vadas, PhD
Senior Research Scientist - Boulder, CO
vasha@nwra.com
(303) 415-9701 x202
Curriculum vitae | Personal website

Research interests: Atmospheric physics, gravity wave dissipation in the thermosphere, ray tracing gravity waves in the lower atmosphere and thermosphere, gravity wave source specification from convection, secondary gravity wave source specification, and modelling horizontal and vertical body forcing. Both analytical and numerical techniques are employed.

⇑ Top Oleg Vasilyev, PhD
Senior Research Scientist - Boulder, CO
oleg.vasilyev@nwra.com

Curriculum vitae
⇑ Top Eric Wagner
Support Engineer - Boulder, CO
wagneric@nwra.com
(303) 415-9701 x221
Curriculum vitae
⇑ Top Lizzie Webb
Administrative Assistant - Redmond, WA
lizzie@nwra.com
(425) 556-9055 x316

⇑ Top Joseph Werne, PhD
Vice President, Senior Research Scientist, Director - Boulder, CO
werne@cora.nwra.com | werne@nwra.com
(303) 415-9701 x207
Personal website

Research interests: High-performance computing, including algorithm development, implementation and optimization on massively parallel processor (MPP) computer platforms; Detailed experience with Cray YMP, C90, T3D, T3E and SGI Origin 2000 machines at various U.S. supercomputer centers. Emphasis is on turbulence in both convection and stable-layer simulation and theory.

⇑ Top Martin Woodard, PhD
Senior Research Scientist - Corvaliss, OR
mfw@nwra.com
x203
Curriculum vitae

Research interests: Space physics. Helioseismology, the solar interior, astrophysics.