NorthWest Research Associates

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

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

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

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).

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

Research interests: Experimental physics, astrophysics and atmospheric physics, parameter estimation using constraints, deep learning methods, and detector design.

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.

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

Research interests: Atmospheric sciences. Atmospheric and mathematical science.

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

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.

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.

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

Research interests: Twohy conducts independent and collaborative research on atmospheric aerosol particles, clouds, and climate, using both field research and modeling. Most of her work involves making measurements from research aircraft in different regions around the globe. She studies how particles in clean and polluted environments form cloud droplets and ice and then influence climate through changes in cloud microphysics, radiative properties and precipitation.