Eugene E. Clothiaux

Eugene E. Clothiaux

  • Professor of Meteorology and Atmospheric Science
603A Walker Building
University Park, PA 16802
Phone: (814) 865-2915


  1. Ph.D. -- Brown University


  • Member of Graduate Faculty

Research Interests:

Atmospheric radiative transfer, ground- and satellite-based observations of clouds, radiative transfer and cloud parameterizations in numerical weather prediction and climate models, data assimilation.

Teaching Interests:

Atmospheric physics (thermodynamics and radiative transfer), application of computers to meteorology and atmospheric science, student professional development.

Eugene E. Clothiaux was born in Las Cruces, New Mexico on (Friday) October 13, 1961. He spent most of his early years in Auburn, Alabama, and later attended Auburn University, where he received the B.Sc. degree in physics in 1983. He attended Brown University for graduate research, obtaining the M.S. degree in physics in 1986 and the Ph.D. degree in physics in 1990. The primary focus of his Ph.D. work was comparisons of the predictions of a neural network model for synaptic plasticity in kitten visual cortex with experimental data. In 1991 he was awarded a Department of Energy Global Change Distinguished Post-Doctoral Fellowship to study radar returns from clear-air turbulence and clouds using a number of different radars developed at the Pennsylvania State University. He is currently a professor in the Department of Meteorology at the Pennsylvania State University, where his interests are ground- and satellite-based remote sensing of clouds with an emphasis on trying to understand the impact of clouds on the radiation budget of the Earth. During the course of his work, he has participated in a number of observational programs, including the First International Satellite Cloud Climatology Project Regional Experiments in Coffeyville, Kansas, the Atlantic Stratocumulus Transition Experiment in Santa Maria, The Azores, the Maritime Continent Thunderstorm Experiment in Darwin, Australia, and many Department of Energy Atmospheric Radiation Measurement Program experiments from the mid-1990s to the present, with a current focus on liquid and ice microphysics retrieval using Azores and North Slope of Alaska measurements. He has participated in the development of cloud detection algorithms applied to data from the Multi-Angle Imaging Spectrometer Radiometer developed by the Jet Propulsion Laboratory and flown on the NASA EOS TERRA platform. More recently, he has begun to interact with other faculty here in the Department of Meteorology and Atmospheric Science on the assimilation of satellite radiances into numerical weather prediction models. In support of undergraduate and graduate education he co-authored a textbook with Craig Bohren titled Fundamentals of Atmospheric Radiation and he has served as a lecturer on radiation for the European Research Course on Atmospheres in Grenoble, France. He is currently a member of the American Geophysical Union and the American Meteorological Society.


Bohren, C.F., and E.E. Clothiaux, 2006: Fundamentals of Atmospheric Radiation, Wiley-VCH, Weinheim, Germany.

Selected Publications:

Flournoy, M.D., S.B. Feldstein, S. Lee and E.E. Clothiaux, 2016: Exploring the tropically excited arctic warming mechanism with station data: Links between tropical convection and arctic downward infrared radiation. J. Atmos. Sci., 73, 1143-1158.

Kollias, P., E.E. Clothiaux and 12 others, 2016: Development and applications of ARM millimeter-wavelength cloud radars, The Atmospheric Radiation Measurement (ARM) Program: The First 20 Years, Meteor. Monogr., No. 57, Amer. Meteor. Soc.,

Zhang, F., M. Minamide, and E.E. Clothiaux, 2016: Potential impacts of assimilating all-sky infrared satellite radiances from GOES-R on convection-permitting analysis and prediction of tropical cyclones, Geophys. Res. Lett., 43, 2954–2963, doi:10.1002/2016GL068468.

Lu Y., K. Aydin, E.E. Clothiaux and J. Verlinde, 2015: Retrieving cloud ice water content using millimeter- and centimeter-wavelength radar polarimetric variables. J. Appl. Meteorol. Climatol., 54 (3), 596-604.

Lu, Y., E.E. Clothiaux, K. Aydin and J. Verlinde, 2014: Estimating ice particle scattering properties using a modified Rayleigh-Gans approximation, J. Geophys. Res., 119 (17), DOI 10.1002/2014JD021850.

Yu, G., J. Verlinde, E.E. Clothiaux and Y.-S. Chen, 2014: Mixed-phase cloud phase partitioning using millimeter wavelength cloud radar Doppler velocity spectra, J. Geophys. Res., 119 (12), 7556-7576.

Verlinde, J., M.P. Rambukkange, E.E. Clothiaux, G.M. McFarquhar and E.W. Eloranta, 2013: Arctic multilayered, mixed-phase cloud processes revealed in millimeter-wave cloud radar Doppler spectra, J. Geophys. Res., 118, 13199-13213.

Petters, J.L., J.Y. Harrington and E.E. Clothiaux, 2012: Radiative-dynamical feedbacks in low liquid water path stratiform clouds. J. Atmos. Sci., 69 (5), 1498-1512.

Yannuzzi, V.T., E.E. Clothiaux, J.Y. Harrington, and J. Verlinde, 2009: Statistical analysis of forecasting models across the North Slope of Alaska during the Mixed-Phase Arctic Clouds Experiment. Weather and Forecasting, 24 (6), 1644-1663.

Kollias, P., E.E. Clothiaux, B.A. Albrecht, G.L. Stephens, and T.P. Ackerman, 2007: Millimeter-wavelength radars – New frontier in atmospheric cloud research. Bull. Amer. Meteor. Soc., 88, 1608-1624.

Shi, T., E.E. Clothiaux, B. Yu, A.J. Braverman, and D.N. Groff, 2007: Detection of daytime arctic clouds using MISR and MODIS data.  Remote Sens. Env., 107, 172-184.

Pawlak, D.T., E.E. Clothiaux, M.F. Modest and J.N.S. Cole, 2004: Full-spectrum correlated k-distribution for shortwave atmospheric radiative transfer. J. Atmos. Sci., 61, 2588-2601.

Clothiaux, E.E., T.P. Ackerman, G.G. Mace, K.P. Moran, R.T. Marchand, M.A. Miller, and B.E. Martner, 2000:  Objective determination of cloud heights and radar reflectivities using a combination of active remote sensors at the ARM CART sites.  J. Appl. Meteor., 39, 645-665.

Miles, N.L., J. Verlinde, and E.E. Clothiaux, 2000: Cloud droplet size distributions in low-level stratiform clouds.  J. Atmos. Sci., 57, 295-311.

Kato, S., T.P. Ackerman, J.H. Mather and E.E. Clothiaux, 1999: The k distribution method and correlated-k approximation for a shortwave radiative transfer model.  J. Quant. Spectros. Radiat. Transfer, 62, 109-121.

Clothiaux, E.E., K.P. Moran, B.E. Martner, T.P. Ackerman, G.G. Mace, T. Uttal, J.H. Mather, K.B. Widener, M.A. Miller and D.J. Rodriguez, 1999:  The Atmospheric Radiation Measurement program cloud radars: Operational modes.  J. Atmos. Oceanic Technol., 16, 819-827.

Clothiaux, E.E., M.A. Miller, B.A. Albrecht, T.P. Ackerman, J. Verlinde, D.M. Babb, R.M. Peters and W.J. Syrett, 1995: An evaluation of a 94-GHz radar for remote sensing of cloud properties.  J. Atmos. and Oceanic Technol., 12, 201-229.