Profile for Richard W. Stewart


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Title: Assistant Chief
Affiliation: NASA
Contact: E-mail
Office Phone: 301-614-6045

Research Area Experience

Mathematical Modeling, Remote Sensing

Education

1967 - Ph.D. (Physics) - Columbia University
1963 - M.A. (Physics) - Columbia University
1960 - B.S. (Physics) - University of Florida

Previous Positions

Research Positions

1978 - Present: Physical Scientist
Laboratory for Atmospheres
Goddard Space Flight Center
Greenbelt, MD

1969 - 1978: Research Scientist
Goddard Institute for Space Studies
New York, NY

1967 - 1969: National Academy of Sciences Research Associate
Goddard Institute for Space Studies
New York, NY

Teaching Positions

1998 - Present: Adjunct Professor of Physics
Howard University
Washington D.C.

1974 - 1977: Visiting Associate Professor of Mechanical Engineering, State University of New York at Stony Brook

1968 - 1976: Adjunct Assistant Professor of Physics, City College, City University of New York 1970 - 1973: Adjunct Assistant Professor of Meteorology New York University

1967 - 1968: Visiting Assistant Professor of Physics Rutgers University

Professional Society Memberships

Sigma Xi
AGU
AMS
AAAS
ACM

Awards and Honors

Phi Beta Kappa (1960)
Phi Kappa Phi (1960)

Publications

Stewart, R. W., Interpretation of Mariner 5 and Venera 4 Data on the Upper Atmosphere of Venus, J. Atmos. Sci., 25, 578, 1968.

Stewart, R. W., Radiative Terms in the Thermal Conduction Equation for Planetary Atmospheres, J. Atmos. Sci., 25, 744-749, 1968.

Stewart R. W., and J. S. Hogan, Empirical Determination of Heating Efficiencies in the Mars and Venus Atmospheres, J. Atmos. Sci., 26, 330-332, 1969.

Hogan, J. S., and R. W. Stewart, Exospheric Temperatures on Mars and Venus, J. Atmos. Sci., 26, 332- 333, 1969.

Stewart R. W., and J. S. Hogan, Solar Cycle Variation of Exospheric Temperatures on Mars and Venus: A Prediction for Mariner 6 and 7, Science, 165, 386-388, 1969.

Rasool, S. I., J. S. Hogan, R. W. Stewart, and L. H. Russell, Temperature Distributions in the Lower Atmosphere of Mars from Mariner 6 and 7 Radio Occultation Data, J. Atmos. Sci., 27, 841, 1970.

Rasool S. I., and R. W. Stewart, Results and Interpretation of the S-band Occultation Experiments on Mars and Venus, J. Atmos. Sci., 28, 869-878, 1971.

Stewart, R. W., The Electron Distributions in the Mars and Venus Upper Atmospheres, J. Atmos. Sci., 28, 1069-1073, 1971.

Hogan, J. S., R. W. Stewart, and S. I. Rasool, Radio Occultation Measurements of the Mars Atmosphere With Mariners 6 and 7, Radio Science,7, 525-537, 1972.

Stewart, R. W. and J. S. Hogan, Error Analysis for the Mariner 6 and 7 Occultation Experiments, Radio Science, 8, 109-115, 1973.

Stewart, R. W., and M. I Hoffert, A Chemical Model of the Troposphere and Stratosphere, J. Atmos. Sci., 32, 195-210, 1974.

Hoffert, M. I., and R. W. Stewart, Stratospheric Ozone--Fragile Shield?, Astronautics and Aeronautics, 42-55, October 1975.

Stewart, R. W., S. Hameed and J. Pinto, Photochemistry of Tropospheric Ozone, J. Geophys. Res., 82, 3134-3140, 1977.

Stewart, R. W., S. Hameed and J. Pinto, The Natural and Perturbed Troposphere, IEEE Transactions on Geoscience Electronics,GE-16, 30-44, 1978.

Hameed, S., J. Pinto and R. W. Stewart, Sensitivity of the Predicted CO-OH-CH4 Perturbation to Tropospheric NOx Concentrations, J. Geophys. Res.,84, 763-768, 1979.

Bufton, J., R. W. Stewart, and C. Weng, Remote Measurements of Tropospheric Ozone, Applied Optics, 18, 3363-3364, 1979.

Matloff, G. and R. W. Stewart, Tropospheric UV Flux Calculations and Photolysis Rates for Use With Zonally and Diurnally Averaged Models, Applied Optics, 18, 3421-3425, 1979.

Hameed, S. and R. W. Stewart, Latitudinal Distribution of the Sources of Carbon Monoxide in the Troposphere, Geophys. Res.Lett.,6, 841-844, 1979.

Stewart, R. W. and J. L Bufton, Development of a Pulsed 9.5 gm Lidar for Regional Scale 03 Measurement, Optical Engineering,19, 503-507, 1980.

Hameed, S., O. G. Paidoussis, and R. W. Stewart, Implication of Natural Sources for the Latitudinal Gradients of NOy in the Unpolluted Troposphere, Geophys. Res. Lett., 8, 591-594, 1981.

Hameed, S. and R. W. Stewart, Latitudinal Variation of Tropospheric Ozone in a Photochemical Model, J. Geophys. Res.,88, 5153-5162, 1983.

Stewart, R. W., S. Hameed, and G. Matloff, A Model Study of the Effects of Intermittent Loss on Odd Nitrogen Concentrations in the Lower Troposphere, J. Geophys. Res., 88,10697-10707, 1983.

Stewart, R. W., The Effect of Random Precipitation Times on the Scavenging Rate for Tropospheric HNO3, Tellus, 40B, 285-296, 1988.

Stewart, R. W., A. M. Thompson, M. A. Owens, and J. A. Herwehe, Comparison of Parameterized Nitric Acid Rainout Rates Using a Coupled Stochastic-Photochemical Tropospheric Model, J. Geophys. Res., 94, 5219~5226, 1989.

Thompson, A. M., R. W. Stewart, M. A. Owens, and J. A. Herwehe, Sensitivity of Tropospheric Oxidants to Global Chemical and Climate Change, Atmos. Environment, 23, 519-532, 1989.

Thompson, A. M., M. A. Owens, and R. W. Stewart, Sensitivity of Tropospheric Hydrogen Peroxide to Global Chemical and Climate Change, Geophys. Res. Lett., 16, 53-56, 1989.

Stewart, R. W., A. M. Thompson, and M. A. Owens, Atmospheric Residence Times for Soluble Species: Differences in Numerical and Theoretical Model Results, Atmos Environ.,24A, 519-524, 1990.

Thompson, A. M., M. A. Huntley, R. W. Stewart, Perturbations to Tropospheric Oxidants, 1985-2035 1. Calculations of Ozone and OH in Chemically Coherent Regions, J. Geophys. Res.,95, 9829-9844., 1990.

Thompson, A. M., M. A. Huntley, and R. W. Stewart, Perturbations to Tropospheric Oxidants, 1985- 2035: 2. Calculations of Hydrogen Peroxide in Chemically Coherent Regions, Atmos. Environ.,25A, 1837-1950, 1991.

Thompson, A. M., and R. W. Stewart, How Chemical Kinetics Uncertainties Affect Concentrations Computed in an Atmospheric Photochemical Model, Chemometrics and Intelligent Laboratory Systems, 10, 69-79, 1991.

Thompson, A. M., and R. W. Stewart, Effect of Chemical Kinetics Uncertainties on Calculated Constituents in a Tropospheric Photochemical Model, J. Geophys. Res.,96, 13089-13108, 1991.

Stewart, R. W. Multiple Steady States in Atmospheric Chemistry, J. Geophys. Res., 98, 20601-20611, 1993.

Stewart, R. W. Dynamics of the Low to High NOx Transition in a Simplified Tropospheric Photochemical Model, J. Geophys. Res.,100, 8929-8943. 1995.

Stewart, R. W., Reply to Comments on 'Multiple Steady States in Atmospheric Chemistry' by Richard Stewart, J. Geophys. Res., 100, 11703, 1995.

Stewart, R. W. and A. M. Thompson, Kinetic Data Imprecisions in Photochemical Rate Calculations: Means, Medians and Temperature Dependence," J. Geophys. Res., 101, 20953-20964, 1996.

McConnell, J. R., J. R. Winterle, R. C. Bales, A. M. Thompson, R. W. Stewart, Physically Based Inversion of Surface Snow Concentrations of H2O2 to Atmospheric Concentrations at South Pole, Geophys. Res.Lett., 24, 441-444., 1997.

Thompson, A. M., H. Singh, R. W. Stewart, T. L. Kucsera, Y. Kondo, A Monte Carlo Study of Upper Tropospheric Reactive Nitrogen During the Pacific Exploratory Mission in the Western Pacific Ocean (PEM-West B), J. Geophys. Res.,102, 28,437-28,446, 1997.

McConnell, J. R., R. C. Bales, R. W. Stewart, A. M. Thompson, M. R. Albert, R.Ramos, Physically Based Modeling of Atmospheric-to-Snow-to-Firn Transfer of H2O2 at South Pole, J. Geophys. Res., 103, 10,561-10,570, 1998.

Chandra, S., J. R. Ziemke and R. W. Stewart, An 11-year Solar Cycle in Tropospheric Ozone from TOMS Measurements, Geophys. Res. Lett., 26, 185-188, 1999.

Hutterli, M. A., J. R. McConnell, R. W. Stewart, H. W. Jacobi, and R. C. Bales, Impact of temperature- driven cycling of hydrogen peroxide (H2O2) between air and snow on the planetary boundary layer, J. Geophys. Res,. 106, 15395-15404, 2001.

Hutterli, M. A., R. C. Bales, J. R. McConnell and R. W. Stewart, HCHO in Antarctic snow: Preservation in ice cores and air-snow exchange, Geophys. Res. Lett.29, 10.1029/2001GL014256, 2002.

Hutterli, M. A., J. R. McConnell, R. C. Bales, and R. W. Stewart, Sensitivity of hydrogen peroxide (H2O2) and formaldehyde (HCHO) preservation in snow to changing environmental conditions: Implications for ice core records, J. Geophys. Res., 108(D1) doi: 10.1029/2002JD002528, 2003.

Stewart, R. W., The annual cycle of hydrogen peroxide: an indicator of chemical instability? Atmos. Chem. Phys., 4, 933-946, 2004.

Frey, M. M., R. W. Stewart, J. R. McConnell, and R. C. Bales: Atmospheric hydroperoxides in West Antarctica: links to stratospheric ozone and atmospheric oxidation capacity, J. Geophys. Res., 110, D23301, doi:10.1029/2005JD006110, 2005.

Publications

Frey M.M., R. Stewart, J.R. McConnell, and R.C. Bales (2005). Atmospheric hydroperoxides in West Antarctica: links to stratospheric ozone and atmospheric oxidation capacity J. Geophys. Res., 110(D23301).
10.1029/2005JD006110