Search Results - "Tolbert, MA"

Formation of aqueous solutions on Mars via deliquescence of chloride–perchlorate binary mixtures by Gough, R.V., Chevrier, V.F., Tolbert, M.A.

“…Perchlorate salts, known to exist on Mars, can readily absorb water vapor and deliquesce into aqueous solutions even at low temperatures. The multiple soluble…”
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Deliquescence and efflorescence of calcium perchlorate: An investigation of stable aqueous solutions relevant to Mars by Nuding, D.L., Rivera-Valentin, E.G., Davis, R.D., Gough, R.V., Chevrier, V.F., Tolbert, M.A.

“…Calcium perchlorate (Ca(ClO4)2) is a highly deliquescent salt that may exist on the surface of present-day Mars; however, its water uptake properties have not…”
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Laboratory studies of perchlorate phase transitions: Support for metastable aqueous perchlorate solutions on Mars by Gough, R.V., Chevrier, V.F., Baustian, K.J., Wise, M.E., Tolbert, M.A.

“…Perchlorate salts, recently discovered on Mars, are known to readily absorb water vapor from the atmosphere and deliquesce into the aqueous phase at room…”
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Depositional ice nucleation onto crystalline hydrated NaCl particles: a new mechanism for ice formation in the troposphere by Wise, M. E, Baustian, K. J, Koop, T, Freedman, M. A, Jensen, E. J, Tolbert, M. A

“…Sea-salt aerosol (SSA) particles are ubiquitous in the marine boundary layer and over coastal areas. Therefore SSA have ability to directly and indirectly…”
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Depositional ice nucleation on solid ammonium sulfate and glutaric acid particles by Baustian, K. J., Wise, M. E., Tolbert, M. A.

“…Heterogeneous ice nucleation on solid ammonium sulfate and glutaric acid particles was studied using optical microscopy and Raman spectroscopy. Optical…”
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Identification of primary amines in Titan tholins using microchip nonaqueous capillary electrophoresis by Cable, M.L., Hörst, S.M., He, C., Stockton, A.M., Mora, M.F., Tolbert, M.A., Smith, M.A., Willis, P.A.

“…Titan, the moon of Saturn with a thick atmosphere and an active hydrocarbon-based weather cycle, is considered the best target in the solar system for the…”
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Optical growth of highly viscous organic/sulfate particles by Robinson, C. B., Schill, G. P., Tolbert, M. A.

“…Light extinction by atmospheric particles is strongly dependent on their chemical composition and water content. Since light extinction directly impacts…”
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Heterogeneous Glyoxal Oxidation: A Potential Source of Secondary Organic Aerosol by Connelly, B. M, De Haan, D. O, Tolbert, M. A

“…Laboratory studies are described that suggest reactive uptake of glyoxal on particulate containing HNO3 could contribute to the formation of secondary organic…”
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Kinetics of acid-catalyzed aldol condensation reactions of aliphatic aldehydes by Casale, Mia T., Richman, Aviva R., Elrod, Matthew J., Garland, Rebecca M., Beaver, Melinda R., Tolbert, Margaret A.

“…Field observations of atmospheric aerosols have established that organic compounds compose a large fraction of the atmospheric aerosol mass. However, the…”
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Measurements of the vapor pressure of cubic ice and their implications for atmospheric ice clouds by Shilling, J. E., Tolbert, M. A., Toon, O. B., Jensen, E. J., Murray, B. J., Bertram, A. K.

“…Under conditions commonly found in Earth's atmosphere, water can form two solid phases; hexagonal ice (Ih) and cubic ice (Ic). Recent reports have suggested…”
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Deliquescence behavior of organic/ammonium sulfate aerosol by Brooks, Sarah D., Wise, Matthew E., Cushing, Melinda, Tolbert, Margaret A.

“…Recent studies have shown that tropospheric aerosols composed of internal mixtures of organics with sulfates are quite common with the organic composing up to…”
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Depositional ice nucleation on crystalline organic and inorganic solids by Shilling, J. E., Fortin, T. J., Tolbert, M. A.

“…This work describes measurements of the heterogeneous depositional nucleation of ice on micrometer‐sized (NH4)2SO4 (AS), maleic acid (C4H4O4) (MA), and mixed…”
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Hygroscopic growth of ammonium sulfate/dicarboxylic acids by Wise, Matthew E., Surratt, Jason D., Curtis, Daniel B., Shilling, John E., Tolbert, Margaret A.

“…Recent studies have shown that tropospheric sulfate aerosols commonly contain 50% by mass organic species. The influence of these organics on the chemical and…”
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The aqueous stability of a Mars salt analog: Instant Mars by Nuding, D. L., Davis, R. D., Gough, R. V., Tolbert, M. A.

“…Due to their stability in low‐temperature conditions, aqueous salt solutions are the favored explanation for potential fluid features observed on present‐day…”
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Heterogeneous uptake of nitric acid on Na-montmorillonite clay as a function of relative humidity by Mashburn, C. D., Frinak, E. K., Tolbert, M. A.

“…Atmospheric mineral aerosol is a potentially important reactive surface that may provide a heterogeneous sink for gas phase species such as nitric acid (HNO3)…”
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Atmospheric science. Solving the PSC mystery by Tolbert, M A, Toon, O B

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Impact of palmitic acid coating on the water uptake and loss of ammonium sulfate particles by Garland, R. M., Wise, M. E., Beaver, M. R., DeWitt, H. L., Aiken, A. C., Jimenez, J. L., Tolbert, M. A.

“…While water insoluble organics are prevalent in the atmosphere, it is not clear how the presence of such species alters the chemical and physical properties of…”
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Laboratory studies of methane and ethane adsorption and nucleation onto organic particles: Application to Titan's clouds by Curtis, Daniel B., Hatch, Courtney D., Hasenkopf, Christa A., Toon, Owen B., Tolbert, Margaret A., McKay, Christopher P., Khare, Bishun N.

“…Titan, Saturn's largest moon, has a thick nitrogen/methane atmosphere. The temperature and pressure conditions in Titan's atmosphere are such that the methane…”
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Key factors influencing the relative humidity dependence of aerosol light scattering by Baynard, T., Garland, R. M., Ravishankara, A. R., Tolbert, M. A., Lovejoy, E. R.

“…We have measured the relative humidity dependence of aerosol light extinction (fσ(ep)(80%RH, Dry)) at 532 nm for non‐absorbing surrogate atmospheric aerosols…”
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Heterogeneous uptake of the C sub(1) to C sub(4) organic acids on a swelling clay mineral by Hatch, C D, Gough, R V, Tolbert, MA

“…Mineral aerosol is of interest due to its physiochemical impacts on the Earth's atmosphere. However, adsorbed organics could influence the chemical and…”
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