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Margaret A. Tolbert| Office: CIRES 166 Office Phone: 303 492 3179 E-mail: Margaret.Tolbert@colorado.edu FAX: 303 492 1149 Lab: CIRES 137, 138 Lab Phone: 303 492 1199 Group Website: http://cires.colorado.edu/science/groups/tolbert/ |
Ph.D.: California Institute of Technology, 1986
Postdoctoral Fellow: Stanford Research Institute, 1986-87
National Academy of Sciences Member, 2004
NASA Group Achievement Award, Crystal-Face Science Team, 2003
NASA Group Achievement Award, SOLVE Experiment, 2001
BFA Award for Excellence in Research, Scholarly and Creative Work, 2001
Curriculum Vitae [ PDF ]
Research
My interests are in the area of heterogeneous atmospheric chemistry, focusing on the chemical, physical and optical properties of atmospheric particulate. In addition to fundamental studies of particles, we are also exploring how atmospheric particulate impacts current problems such as stratospheric ozone depletion, global climate change, urban smog and visibility degradation.
In addition to studies of atmospheric aerosols on current-day Earth, we are also probing the particles that might have been present at the earliest times in Earth’s history. We are interested in how those particles might have impacted the climate of early Earth and the development of life on Earth. As a parallel to early Earth, we are also studying aerosols and clouds on other planetary bodies such as Mars, Venus and Titan.
Our work is primarily laboratory based, but involves collaborations with theory teams and those involved in observations and fieldwork. Primary support for our work comes from the National Science Foundation and NASA.
Selected Publications
“Hygroscopic growth of ammonium sulfatet/dicarboxylic acids,” M.E. Wise, J. D. Surratt, D. B. Curtis, J. E. Shilling, and M. A. Tolbert, J. Geophys. Res., 108, doi:10.1029/2003JD003775, 2003.
“Polar Stratospheric Clouds during SOLVE/THESEO: Comparison of Lidar Observations with In-Situ Measurements,” Sarah D. Brooks, Owen B. Toon, Margaret A. Tolbert, Darrel Baumgardner, Bruce Gandrud, Edward Browell, Harald Flentje, J. Charles Wilson, Journal of Geophysical Research, 109, doi:10.1029/2003JD003463, 2004.
“Heterogeneous reaction of gaseous nitric acid on gamma-phase iron (III) oxide,” E. K. Frinak, S. J. Wermeille, C. D. Mashburn, M.A. Tolbert, and C. J. Pursell, J. Phys. Chem. A, 108, 1560-1566, 2004.
“Haze Aerosols in the Atmosphere of Early Earth: Manna from Heaven,” M. G. Trainer, D. B. Curtis, A. E. Delia, A. A. Pavlov, C. P. McKay, D.R. Worsnop, D. W. Toohey, O. B. Toon, and M. A. Tolbert, Astrobiology, 4, 409-419, 2004. (Cover article)
“Ice nucleation in internally mixed ammonium sulfate/dicarboxylic acid particles,” M. E. Wise, R. M. Garland, and M. A. Tolbert, J. Geophys. Res., 109, D19203, 2004.
“Uptake of acetic acid on thin ammonium nitrate films as a function of temperature and relative humidity,” J. E. Shilling and M. A. Tolbert, J. Phys. Chem, 108, 11314-11320, 2004.
“Chemical Composition of Titan’s Haze: Are PAH’s Present?” M. G. Trainer, A. A. Pavlov, J. L. Jimenez, C. P. McKay, D. R. Worsnop, O. B. Toon and M. A. Tolbert, Geophys. Res. Lett., 31, doi 10.1029/2004 GL019859, 2004.
“Infrared Characterization of Water Uptake by Low Temperature Na-Montmorillonite: Implications for Earth and Mars,” E. K. Frinak, C. D. Mashburn, M. A. Tolbert and O. B. Toon, J. Geophys. Res., 110, D09308, 2005.
“Laboratory studies of butane nucleation on organic haze particles: application to Titan’s clouds,” D. B. Curtis, D. L. Glandorf, O. B. Toon, M. A. Tolbert, C. P. McKay and B. N. Khare, Journal of Physical Chemistry A, 109, 1382-1390, 2005.
“Impact of palmitic acid coating on the water uptake and loss of ammonium sulfate particles,” R. M. Garland, M.E. Wise, M.R. Beaver, H. L. DeWitt, A.C. Aiken, J.L. Jimenez and M. A. Tolbert, Atmospheric Chemistry and Physics 5, 1951-1961, 2005.
“Measurement of the temperature-dependent optical constants of water ice in the 15 - 200 um range, D. B. Curtis, B. Rajaram, O. B. Toon and M. A. Tolbert, Applied Optics 44, 4102-4118, 2005.
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