JAMES G. HUDSON

Research Professor
Atmospheric Sciences Division

Resume

EDUCATION:

Ph.D., Atmospheric Physics, University of Nevada, Reno
M.S., Physics, University of Michigan
B.A., Physics, Mathematics, Western Michigan University

PROFESSIONAL INTERESTS:

Dr. Hudson's research interests center on cloud and aerosol physics. He has made extensive field measurements of cloud condensation nuclei (CCN) in various parts of the world. He compares the CCN spectra with cloud droplet spectra to obtain a better fundamental understanding of cloud physics. He is also interested in differentiating between man made and natural CCN. This is important in determining anthropogenic effects on clouds which is important for global climatic considerations. Recent work has also involved physical characterization of CCN (volatility and the relationship between physical size and critical supersaturation) in order to understand sources. This and the interstitial and droplet residue measurements are now better done with the two matched DRI CCN spectrometers as has been done in two of his most recent aircraft research projects.

RESEARCH AREAS:

Atmospheric Chemistry, Climate Dynamics, Physical Meteorology

SELECTED PUBLICATIONS:

Hudson, J.G., S. Noble, V. Jha and S. Mishra, 2008:

Correlations of small cumuli droplet and drizzle drop concentrations with CCN concentrations, Submitted to J. Geophys. Res., June.

Daum, P.H., Y. Liu, R. L. McGraw, Y. Lee, J. Wang, G. Senum, M. Miller, and J.G. Hudson, 2007:

Microphysical properties of stratus/stratocumulus clouds during the 2005 Marine Stratus/Stratocumulus Experiment (MASE). Submitted to J. Geophys. Res. in April and resubmitted in August.

Rosenfeld, D., Woodley, W.L., Axisa, D., Freud, E., Hudson, J.G. and A. Givati, 2008:

Aircraft measurements of the impacts of pollution aerosols on clouds and precipitation over the Sierra Nevada. J. Geophys. Res., 113, D15203, doi:10.1029/2007JD009544.

Gerber, H., G. Frick, Jensen, J.B., and J.G. Hudson, 2008:

Entrainment, mixing, and microphysics in trade-wind cumulus. J. Met. Soc. Japan, Accepted March.

Lasher-Trapp, S., S. Anderson-Bereznicki, A. Shackelford, C.H. Twohy, and J.G. Hudson, 2008:

An investigation of the influence of droplet number concentration and giant aerosol particles upon supercooled large drop formation in wintertime stratiform clouds. J. Appl. Meteorol. & Climatol. Accepted March. DOI: 10.1175/2008JAMC1807.1

Rauber, R.M., et al., 2007:

Rain In shallow Cumulus over the Ocean, the RICO campaign. Bulletin, AMS, 88, 1912-1928.

Hudson, J. G., and S. Mishra (2007):

Relationships between CCN and cloud microphysics variations in clean maritime air, Geophys. Res. Lett., 34, L16804, doi:10.1029/2007GL030044.

Hudson, J.G., 2007:

Variability of the relationship between particle size and cloud-nucleating ability. Geophys. Res. Let., 34, L08801, doi:10.1029/2006GL028850.

Chylek, P., Dubey, M., Lohmann, U., Ramanathan, V., Kaufman, Y., Lesins, G., Hudson, J., Altmann, G., and Olsen, S., 2006:

Aerosol indirect effect over Indian Ocean. Geophys. Res. Let., 33, L06806, DOI 10.1029/2005GL025397.

Gasparini, R., D.R. Collins, E. Andrews, P.J. Sheridan, J.A. Ogren, and J.G. Hudson, 2006:

Coupling aerosol size distributions and size-resolved hygroscopicity to predict humidity-dependent optical properties and CCN spectra. J. Geophys. Res., 111, D05S10, doi:10.1029/2005JD006092.

Ghan, S.J., Rissman, T.A, Elleman R., Ferrare, R.A., Turner, D., Flynn, C. , Wang, J., Ogren, J., Hudson, J., Jonsson, H.H., VanReken, T., Flagan, R.C., and Seinfeld, J.H., 2006:

Use of in situ cloud condensation nuclei, extinction and aerosol size distribution measurements to test a method for retrieving cloud condensation nuclei profiles from surface measurements. J. Geophys. Res., 111, D05S10, doi:10.1029/2004JD005752.

Yum, S. S., J. G. Hudson, K. Y. Song, and B.-C. Choi, 2005:

Springtime cloud condensation nuclei concentrations on the west coast of Korea. Geophys. Res. Let., 32, doi:10.1029/2005GL022641.

Yum, S.S., and J.G. Hudson, 2005:

Adiabatic predictions and observations of cloud droplet spectral broadness. Atmospheric Research., 73, 203-223.