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Atmospheric Sciences Research
Air-Sea Interaction: Diagnostic, analytical and modeling studies of coupled atmospheric and oceanic processes in the coastal zone and the open ocean, such as El Nino/Southern Oscillation, hurricane-ocean interaction, land-sea breeze circulation, monsoon, marine atmospheric boundary layer, wind-wave interaction, and storm surge. Prof. Lian Xie

Atmospheric Chemistry and Air Quality: Measurements and 3-D numerical modeling of emissions, transformation, transport, and fate of pollutants; agricultural air quality; measurement and modeling of biogenic emissions of trace gases; field and laboratory measurements of atmospheric-biospheric interactions, atmospheric photochemical oxidants and gas-to-particle conversion, chemical characterization of aerosols and carbon isotopic systematics of biogenic methane formation and emissions, chemistry and dynamics of atmospheric aerosols and clouds, sensitivity and uncertainty analysis, and interactions among atmospheric chemistry, meteorology, and climate change. The 3-D models for urban to global scale atmospheric simulations include MM5, WRF, WRF/Chem, CMAQ, CAMx, and MIRAGE. Profs. Viney Aneja, Nicholas Meskhidze, Yang Zhang, Markus Petters, Russell Philbrick

Boundary Layer Meteorology: Development of analytic, numerical, and physical models of the planetary boundary layer under varying surface and meteorological conditions, improve and test the parameterization of the planetary boundary layer in large-scale atmospheric circulation models and theoretical modeling of atmospheric dispersion in complex flows. Prof. Sukanta Basu

Climatology: Global, regional, and local climate modeling, natural role of trace gases, aerosols, and clouds in global climate, impacts of climate changes on air pollutant emissions and air quality, bias introduced by urban heat islands in assessing global warming, use of long-range transport models to investigate source regions, movements, and deposition patterns associated with pathogenic spore clouds, and synoptic climatology of weather events associated with tropical and extra-tropical cyclones. Profs. Fred Semazzi, Lian Xie, Nicholas Meskhidze, Yang Zhang, Walt Robinson

Cloud Chemistry and Microphysics: Microphysical and chemical properties of clouds and precipitation, in-cloud processes for sulfur transformation and scavenging to determine the sulfate aerosol burden, the effectiveness of the cloud-nucleation process in precipitation scavenging of gaseous and particulate pollutants, the effect of cloud microphysics on chemical predictions, cloud-aerosol interactions in polar regions to improve understanding of the past climate deciphered from the ice-core records, depletion of stratospheric ozone and role of polar stratospheric clouds and perception of visual and extinction properties of the atmosphere. Profs. Sandra Yuter, Nicholas Meskhidze, Yang Zhang, Viney Aneja, Markus Petters

Convective Dynamics and Physics: Emphasis on thunderstorms, severe convective weather, squall lines, supercells and tornadoes, extreme local precipitation, small-scale precipitation variability, and marine stratocumulus drizzle. Profs. Matthew Parker, Sandra Yuter

Geophysical Fluid Dynamics: Atmospheric turbulence and diffusion, forest fire dynamics and prediction index development, wake vortex dynamics and their implication to aviation safety, Mars atmospheric dynamics and modeling (both mesoscale and global), and coastal fluid dynamics. Profs. Lian Xie, Ruoying He

Meteorological Observations and Instrumentation: Scanning Doppler and polarimetric radar, vertically-pointing radar measurements of reflectivity, radial velocity, spectral width and wind. Measurements of precipitation particle size distributions, rain and snow rates, soil moisture, and radiative fluxes. Field project planning and deployment of instrumentation. Emphasis on the integration of information from multiple, diverse sensors. Applications focused on the formation of precipitation, its distribution in a variety of marine and continental settings, and cloud-radiative feedbacks. Profs. Sandra Yuter, Markus Petters,
Russell Philbrick

Mesoscale Processes: Emphasis on mesoscale waves, orographic clouds and precipitation, mesoscale organization of and response to convection, lee and coastal cyclogenesis, and the mesoscale structure of precipitation in cyclones. Profs. Gary Lackmann, Matthew Parker, Lian Xie, Sandra Yuter

Satellite Remote Sensing
: Observed and retrieved meteorological and chemical parameters from geosynchronous and low-earth orbit satellites. Validation of retrieval algorithms. Applications include the microphysical, precipitation, dynamical and electrical characteristics of individual clouds, convective cells, severe thunderstorms and mesoscale convective systems in the midlatitudes and tropics, aerosol optical depths, total column abundance of chemical species such as ozone, carbon monoxide, and nitrogen dioxides. Integrating Remote Sensing Data Products for Improved Agricultural Air Quality and Nitrogen Management. Profs. Sandra Yuter, Nicholas Meskhidze, Yang Zhang, Viney Aneja

Storm Structure and Dynamics: This research involves the analysis of convective- and mesoscale data and simulations with the aim of improving our understanding of the structure and evolution of thunderstorms, mesoscale precipitation systems, and their attendant severe weather. Prof. Matthew Parker

Synoptic-Dynamic Meteorology
: Emphasis on winter storm dynamics and thermodynamics, topographic phenomena, heavy precipitation events, upscale impacts of organized convection, and extratropical hurricane transition. Prof. Gary Lackmann

Tropical Meteorology:
Structure of tropical storms and hurricanes, numerical modeling studies of the dynamics of the Indian southwest monsoon, and studies of the planetary boundary layer structure and diffusion processes in the tropics. Profs. Anantha Aiyyer, Lian Xie, Gary Lackmann, Matthew Parker, Sandra Yuter

Weather Systems and Forecasting: Research objectives include enhanced understanding and forecasting of synoptic, mesoscale, and convective weather systems via analysis of observations, theory, and numerical simulations; formulation and refinement of conceptual models; improvements to numerical weather prediction models. These aims are pursued in close collaboration with the Raleigh National Weather Service Forecast Office (on campus). Profs. Gary Lackmann, Matthew Parker, Lian Xie, Sandra Yuter.

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