Areas of interest are radiative transfer, satellite remote sensing, and applications of satellite measurements to weather forecasting and climate research. He has developed algorithms to retrieve cloud liquid water, cloud ice water, precipitation and surface turbulent fluxes using a combination of visible, infrared and microwave satellite observations. He has also developed a fast and accurate radiative transfer model for applying satellite microwave data to physical parameter retrievals and numerical weather forecasting models.
Liu, G., and J. A. Curry, 2000: Determination of ice water path and mass median particle size using multichannel microwave measurements. J. Appl. Meteor. 38, 1182-1194.
Liu, G., and Y. Fu, 2001: The Characteristics of tropical precipitation profiles as inferred from satellite radar measurements. J. Meteor. Soc. Japan, 79, 131-143.
Liu, G., J. A. Curry, J. A. Haggerty, and Y. Fu, 2001: Retrieval and characterization of cloud liquid water path using airborne passive microwave data during INDOEX. J. Geophys. Res., 106, 28,719-28,730.
Liu, G., 2002: Satellite Remote Sensing: Precipitation. In “Encyclopedia of Atmospheric Sciences”. J. Holton, J. Pyle, J. Curry, ed., Academic Press, London, UK.
Liu, G., and J. A. Curry, 2003: Observation and Interpretation of microwave cloud signatures over the Arctic Ocean during winter. J. Appl. Meteor., 42,51-64.
Liu, G., H. Shao, J. A. Coakley, J. A. Curry, J. A. Haggerty, and M. A. Tschudi, 2003: Retrieval of cloud droplet size from visible and microwave radiometric measurements during INDOEX: Implication to aerosols’ indirect radiative effect. J. Geophys. Res., 108, doi:10.1029/2001JD001395.
Shao, H., and G. Liu, 2004: Detecting drizzle in marine warm clouds using combined visible, infrared and microwave satellite data. J. Geophys. Res. 109, D07205, doi:10.1029/2003JD004286.
Noh, Y.-J., G. Liu, N. Balas, K. Aonashi, and T. Koike, 2004: Diurnal variations of snow precipitation in Wakasa Bay during winter. J. Meteor. Soc. Japan, 82, 1117-1128.
Liu, G., 2004: Approximation of single scattering properties of ice and snow particles for high microwave frequencies. J. Atmos. Sci., 61, 2441-2456.
Varma, A. K., G. Liu, and Y.-J. Noh, 2004: Sub-pixel scale variability of rainfall and its application to mitigate the beam-filling problem. J. Geophys. Res. 109, D18210, doi:10.1029/2004JD004968.
Seo, E., and G. Liu, 2005: Retrievals of cloud ice water path by combining ground cloud radar and satellite high-frequency microwave measurements near the ARM SGP site, J. Geophys. Res., 110, D14203, doi:10.1029/2004JD005727.
Shao, H., and G. Liu, 2005: Why is the satellite observed aerosol's indirect effect so variable? Geophys. Res. Lett., L15802, doi:10.1029/2005GL023260.