Search Results - "TOLBERT, M.A."

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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Formation of liquid water at low temperatures via the deliquescence of calcium chloride: Implications for Antarctica and Mars by Gough, R.V., Chevrier, V.F., Tolbert, M.A.

“…There is significant interest in the potential existence of even small amounts of liquid brine on current Mars. It has been proposed that aqueous solutions…”
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Freezing of perchlorate and chloride brines under Mars-relevant conditions by Primm, K.M., Gough, R.V., Chevrier, V.F., Tolbert, M.A.

“…Perchlorate and chloride salts on Mars could readily absorb water vapor and deliquesce into aqueous solutions. The deliquescence relative humidity (RH) as well…”
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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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Water uptake by chlorate salts under Mars-relevant conditions by Fernanders, M.S., Gough, R.V., Chevrier, V.F., Schiffman, Z.R., Ushijima, S.B., Martinez, G.M., Rivera-Valentín, E.G., Archer, P.D., Clark, J.V., Sutter, B., Tolbert, M.A.

“…Chlorine is ubiquitous on Mars, some of it in the form of oxy-chlorine salts. Chlorine-containing salts have been found at several landing sites, including…”
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Brine formation via deliquescence by salts found near Don Juan Pond, Antarctica: Laboratory experiments and field observational results by Gough, R.V., Wong, J., Dickson, J.L., Levy, J.S., Head, J.W., Marchant, D.R., Tolbert, M.A.

“…The observed darkening of water tracks near Don Juan Pond (DJP) as well as the formation of wet patches elsewhere in the McMurdo Dry Valleys is attributed at…”
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Solid-solid hydration and dehydration of Mars-relevant chlorine salts: Implications for Gale Crater and RSL locations by Gough, R.V., Primm, K.M., Rivera-Valentín, E.G., Martínez, G.M., Tolbert, M.A.

“…•We perform low-temperature laboratory studies of perchlorate & chloride hydration.•Under certain lab conditions, salts can hydrate and dehydrate.•Salts at…”
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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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Corrigendum to “Laboratory studies of perchlorate phase transitions: Support for metastable aqueous perchlorate solutions on Mars” [Earth Planet. Sci. Lett. 312 (3–4) (2011) 371–377] 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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Evidence That Nitric Acid Increases Relative Humidity in Low-Temperature Cirrus Clouds by Gao, R. S., Popp, P. J., Fahey, D. W., Marcy, T. P., Herman, R. L., Weinstock, E. M., Baumgardner, D. G., Garrett, T. J., Rosenlof, K. H., Thompson, T. L., Bui, P. T., Ridley, B. A., Wofsy, S. C., Toon, O. B., Tolbert, M. A., Kärcher, B., Th. Peter, Hudson, P. K., Weinheimer, A. J., Heymsfield, A. J.

“…In situ measurements of the relative humidity with respect to ice ($RH_i$) and of nitric acid (HNO3) were made in both natural and contrail cirrus clouds in…”
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Can rapid loss and high variability of Martian methane be explained by surface H 2O 2? by Gough, R.V., Turley, J.J., Ferrell, G.R., Cordova, K.E., Wood, S.E., DeHaan, D.O., McKay, C.P., Toon, O.B., Tolbert, M.A.

“…It has been reported by several groups that methane in the Martian atmosphere is both spatially and temporally variable. Gough et al. (2010) suggested that…”
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Can rapid loss and high variability of Martian methane be explained by surface H2O2? by Gough, R.V., Turley, J.J., Ferrell, G.R., Cordova, K.E., Wood, S.E., DeHaan, D.O., McKay, C.P., Toon, O.B., Tolbert, M.A.

“…It has been reported by several groups that methane in the Martian atmosphere is both spatially and temporally variable. suggested that temperature dependent,…”
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Desorption of H2O from a hydroxylated single-crystal α-Al2O3(0001) surface by NELSON, C. E, ELAM, J. W, CAMERON, M. A, TOLBERT, M. A, GEORGE, S. M

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Investigation of the Heterogeneous Reactivity of HCl, HBr, and HI on Ice Surfaces by Barone, Stephen B, Zondlo, Mark A, Tolbert, Margaret A

“…The interactions of hydrogen halide gases (HX = HCl, HBr, and HI) with thin ice films representative of atmospheric aerosols have been studied using a Knudsen…”
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H 2O and HCl adsorption on single crystal α-Al 2O 3(0001) at stratospheric temperatures by Nelson, C.E., Elam, J.W., Tolbert, M.A., George, S.M.

“…The adsorption of H 2O and HCl on single crystal α-Al 2O 3(0001) at stratospheric temperatures was studied using laser-induced thermal desorption (LITD) and…”
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Sulfate Aerosols and Polar Stratospheric Cloud Formation by Tolbert, Margaret A.

“…Chemical research on ozone layer depletion has been focusing on heterogeneous reactions on stratospheric aerosols. The two main types, stratospheric sulfate…”
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PHASE CHANGES IN MIXED DIACID/SULFATE AEROSOLS by BROOKS, S.D., CUSHING, M., PRENNI, A.J., WISE, M.E., TOLBERT, M.A.

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Polar Clouds and Sulfate Aerosols by Tolbert, Margaret A.

“…Polar stratospheric clouds are known to play an important role in ozone destruction over the north and south poles. One puzzle is how the clouds can…”
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