Search Results - "Toohey, D.W."

Free Radicals Within the Antarctic Vortex: The Role of CFCs in Antarctic Ozone Loss by Anderson, J. G., Toohey, D. W., Brune, W. H.

“…How strong is the case linking global release of chlorofluorocarbons to episodic disappearance of ozone from the Antarctic stratosphere each austral spring?…”
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Chlorine Chemistry on Polar Stratospheric Cloud Particles in the Arctic Winter by Webster, C. R., May, R. D., Toohey, D. W., Avallone, L. M., Anderson, J. G., Newman, P., Lait, L., Schoeberl, M. R., Elkins, J. W., Chan, K. R.

“…Simultaneous in situ measurements of hydrochloric acid (HCl) and chlorine monoxide (ClO) in the Arctic winter vortex showed large HCl losses, of up to 1 part…”
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In Situ Observations of Aerosol and Chlorine Monoxide After the 1991 Eruption of Mount Pinatubo: Effect of Reactions on Sulfate Aerosol by Wilson, J. C., Jonsson, H. H., Brock, C. A., Toohey, D. W., Avallone, L. M., Baumgardner, D., Dye, J. E., Poole, L. R., Woods, D. C., DeCoursey, R. J., Osborn, M., Pitts, M. C., Kelly, K. K., Chan, K. R., Ferry, G. V., Loewenstein, M., Podolske, J. R., Weaver, A.

“…Highly resolved aerosol size distributions measured from high-altitude aircraft can be used to describe the effect of the 1991 eruption of Mount Pinatubo on…”
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The Potential for Ozone Depletion in the Arctic Polar Stratosphere by Brune, W. H., Anderson, J. G., Toohey, D. W., Fahey, D. W., Kawa, S. R., Jones, R. L., McKenna, D. S., Poole, L. R.

“…The nature of the Arctic polar stratosphere is observed to be similar in many respects to that of the Antarctic polar stratosphere, where an ozone hole has…”
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The Seasonal Evolution of Reactive Chlorine in the Northern Hemisphere Stratosphere by Toohey, D. W., Avallone, L. M., Lait, L. R., Newman, P. A., Schoeberl, M. R., Fahey, D. W., Woodbridge, E. L., Anderson, J. G.

“…In situ measurements of chlorine monoxide (ClO) at mid- and high northern latitudes are reported for the period October 1991 to February 1992. As early as…”
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Emissions from forest fires near Mexico City by Yokelson, R.J, Urbanski, S.P, Atlas, E.L, Toohey, D.W, Alvarado, E.C, Crounse, J.D, Wennberg, P.O, Fisher, M.E, Wold, C.E, Campos, T.L, Adachi, K, Buseck, P.R, Hao, W.M

“…The emissions of NOx (defined as NO (nitric oxide) + NO2 (nitrogen dioxide)) and hydrogen cyanide (HCN), per unit amount of fuel burned, from fires in the pine…”
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Removal of stratospheric O3 by radicals : in situ measurements of OH, HO2, NO, NO2, ClO, and BrO by WENNBERG, P. O, COHEN, R. C, WEBSTER, C. R, MAY, R. D, TOOHEY, D. W, AVALLONE, L. M, PROFFITT, M. H, LOEWENSTEIN, M, PODOLSKE, J. R, CHAN, K. R, WOFSY, S. C, STIMPFLE, R. M, KOPLOW, J. P, ANDERSON, J. G, SALAWITCH, R. J, FAHEY, D. W, WOODBRIDGE, E. L, KEIM, E. R, GAO, R. S

“…Simultaneous in situ measurements of the concentrations of OH, HO(2), ClO, BrO, NO, and NO(2) demonstrate the predominance of odd-hydrogen and halogen…”
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Demonstration of a VUV lamp photoionization source for improvedorganic speciation in an aerosol mass spectrometer by Northway, M.J., Jayne, J.T., Toohey, D.W., Canagaratna, M.R., Trimborn, A., Akiyama, K-I., Shimono, A., Jimenez, J.L., DeCarlo, P.F., Wilson, K.R., Worsnop, D.R.

“…In recent years, the Aerodyne AerosolMass Spectrometer(AMS) has become a widely used tool for determining aerosol sizedistributions and chemical composition…”
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Theoretical investigations of reactions of some radicals with HO sub 2. 1. Hydrogen abstractions by direct mechanisms by Toohey, D.W., Anderson, J.G.

“…Ab initio quantum mechanical methods are used to calculate saddle-point geometries and energies for hydrogen abstractions from HO{sub 2} by N, ClO, O, Cl, H,…”
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In situ northern mid-latitude observations of ClO, O3, and BrO in the wintertime lower stratosphere by Brune, W. H., Toohey, D. W., Anderson, J. G., Starr, W. L., Vedder, J. F., Danielsen, E. F.

“…In order to test photochemical theories linking chlorofluorocarbon derivatives to O3 depletion at high latitudes in the springtime, several related atmospheric…”
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Formation of BrCl(3Π0+) in the reaction of BrO with ClO by TOOHEY, D. W, ANDERSON, J. G

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Kinetics and mechanism of X + ClNO yields XCl + NO (X = Cl, F, Br, OH, O, N) from 220 to 450 K. Correlation of reactivity and activation energy with electron affinity of X by Abbatt, J.P.D., Toohey, D.W., Fenter, F.F., Stevens, P.S., Brune, W.H., Anderson, J.G.

“…The rate constants for a series of radical reactions with ClNO, X + ClNO {yields} products where X = Cl, F, Br, OH, O, N, have been measured as a function of…”
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An Investigation Of Polar Stratospheric Clouds Using Remote Sensors, In Situ Instruments, And The Perseus Remotely Piloted Aircraft by Toohey, D.W., Gary, B.L., Langford, J.S.

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