Search Results - "Stimpfle, R. M"

First measurements of ClOOCl in the stratosphere: The coupling of ClOOCl and ClO in the Arctic polar vortex by Stimpfle, R. M., Wilmouth, D. M., Salawitch, R. J., Anderson, J. G.

“…The first measurements of ClOOCl in the stratosphere have been acquired from a NASA ER‐2 aircraft, deployed from Kiruna, Sweden (68°N, 21°E), during the joint…”
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Toward a better quantitative understanding of polar stratospheric ozone loss by Frieler, K., Rex, M., Salawitch, R. J., Canty, T., Streibel, M., Stimpfle, R. M., Pfeilsticker, K., Dorf, M., Weisenstein, D. K., Godin-Beekmann, S.

“…Previous studies have shown that observed large O3 loss rates in cold Arctic Januaries cannot be explained with current understanding of the loss processes,…”
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Evolution of inorganic chlorine partitioning in the Arctic polar vortex by Wilmouth, D. M., Stimpfle, R. M., Anderson, J. G., Elkins, J. W., Hurst, D. F., Salawitch, R. J., Lait, L. R.

“…The first simultaneous, in situ atmospheric measurements of ClO, ClOOCl, ClONO2, and HCl, which together nearly compose total inorganic chlorine, Cly, were…”
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Distribution of halon-1211 in the upper troposphere and lower stratosphere and the 1994 total bromine budget by Wamsley, P. R., Elkins, J. W., Fahey, D. W., Dutton, G. S., Volk, C. M., Myers, R. C., Montzka, S. A., Butler, J. H., Clarke, A. D., Fraser, P. J.

“…We report here on the details of the first, in situ, real-time measurements of H-1211 (CBrClF2) and sulfur hexafluoride (SF6) mixing ratios in the stratosphere…”
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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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Modeling the effect of denitrification on Arctic ozone depletion during winter 1999/2000 by Davies, S., Chipperfield, M. P., Carslaw, K. S., Sinnhuber, B.-M., Anderson, J. G., Stimpfle, R. M., Wilmouth, D. M., Fahey, D. W., Popp, P. J., Richard, E. C., von der Gathen, P., Jost, H., Webster, C. R.

“…We have used the SLIMCAT three‐dimensional chemical transport model together with observations from the Stratospheric Aerosol and Gas Experiment (SAGE III)…”
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Comparison of MkIV balloon and ER-2 aircraft measurements of atmospheric trace gases by Toon, G. C., Blavier, J.‐F., Sen, B., Margitan, J. J., Webster, C. R., May, R. D., Fahey, D., Gao, R., Del Negro, L., Proffitt, M., Elkins, J., Romashkin, P. A., Hurst, D. F., Oltmans, S., Atlas, E., Schauffler, S., Flocke, F., Bui, T. P., Stimpfle, R. M., Bonne, G. P., Voss, P. B., Cohen, R. C.

“…On May 8, 1997, vertical profiles of over 30 different gases were measured remotely in solar occultation by the Jet Propulsion Laboratory MkIV Interferometer…”
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Sources, Sinks, and the Distribution of OH in the Lower Stratosphere by Hanisco, T. F, Lanzendorf, E. J, Wennberg, P. O, Perkins, K. K, Stimpfle, R. M, Voss, P. B, Anderson, J. G, Cohen, R. C, Fahey, D. W, Gao, R. S, Hintsa, E. J, Salawitch, R. J, Margitan, J. J, McElroy, C. T, Midwinter, C

“…Extensive measurement campaigns by the NASA ER-2 research aircraft have obtained a nearly pole-to-pole database of the species that control HO x (OH + HO2)…”
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Nighttime OClO in the winter Arctic vortex by Canty, T., Rivière, E. D., Salawitch, R. J., Berthet, G., Renard, J.‐B., Pfeilsticker, K., Dorf, M., Butz, A., Bösch, H., Stimpfle, R. M., Wilmouth, D. M., Richard, E. C., Fahey, D. W., Popp, P. J., Schoeberl, M. R., Lait, L. R., Bui, T. P.

“…We show that a nighttime profile of OClO in the Arctic vortex during the winter of 2000 is overestimated, by nearly a factor of 2, using an isentropic…”
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In situ observations of HO2 and OH obtained on the NASA ER-2 in the high-ClO conditions of the 1999/2000 Arctic polar vortex by Hanisco, T. F., Smith, J. B., Stimpfle, R. M., Wilmouth, D. M., Anderson, J. G., Richard, E. C., Bui, T. P.

“…Extensive observations of OH and HO2 obtained aboard the NASA ER‐2 inside the Arctic polar vortex during the SAGE III Ozone loss and Validation Experiment…”
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An examination of the inorganic chlorine budget in the lower stratosphere by Bonne, G. P., Stimpfle, R. M., Cohen, R. C., Voss, P. B., Perkins, K. K., Anderson, J. G., Salawitch, R. J., Elkins, J. W., Dutton, G. S., Jucks, K. W.

“…We use the first simultaneous in situ measurements of ClONO2, ClO, and HCl acquired using the NASA ER-2 aircraft during the Photochemistry of Ozone Loss in the…”
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Quantifying the rate of heterogeneous processing in the Arctic polar vortex with in situ observations of OH by Hanisco, T. F., Smith, J. B., Stimpfle, R. M., Wilmouth, D. M., Perkins, K. K., Spackman, J. R., Anderson, J. G., Baumgardner, D., Gandrud, B., Webster, C. R., Dhaniyala, S., McKinney, K. A., Bui, T. P.

“…We present simultaneous in situ observations of OH, HO2, ClONO2, HCl, and particle surface area inside a polar stratospheric cloud undergoing rapid…”
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Comparison of ER-2 aircraft and POAM III, MLS, and SAGE II satellite measurements during SOLVE using traditional correlative analysis and trajectory hunting technique by Danilin, M. Y., Ko, M. K. W., Bevilacqua, R. M., Lyjak, L. V., Froidevaux, L., Santee, M. L., Zawodny, J. M., Hoppel, K. W., Richard, E. C., Spackman, J. R., Weinstock, E. M., Herman, R. L., McKinney, K. A., Wennberg, P. O., Eisele, F. L., Stimpfle, R. M., Scott, C. J., Elkins, J. W., Bui, T. V.

“…We compared the version 5 Microwave Limb Sounder (MLS), version 3 Polar Ozone and Aerosol Measurement III (POAM III), version 6.0 Stratospheric Aerosol and Gas…”
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Quantitative constraints on the atmospheric chemistry of nitrogen oxides: An analysis along chemical coordinates by Cohen, R. C., Perkins, K. K., Koch, L. C., Stimpfle, R. M., Wennberg, P. O., Hanisco, T. F., Lanzendorf, E. J., Bonne, G. P., Voss, P. B., Salawitch, R. J., Del Negro, L. A., Wilson, J. C., McElroy, C. T., Bui, T. P.

“…In situ observations Of NO2, NO, NOy, ClONO2, OH, O3, aerosol surface area, spectrally resolved solar radiation, pressure and temperature obtained from the…”
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Activation of chlorine in sulfate aerosol as inferred from aircraft observations by Kawa, S. R., Newman, P. A., Lait, L. R., Schoeberl, M. R., Stimpfle, R. M., Kohn, D. W., Webster, C. R., May, R. D., Baumgardner, D., Dye, J. E., Wilson, J. C., Chan, K. R., Loewenstein, M.

“…The abundance of reactive chlorine in the lower stratosphere is observed to increase sharply with exposure to temperatures below about 195 K, a temperature…”
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A comparison of observations and model simulations of NOx/NOy in the lower stratosphere by Gao, R. S., Fahey, D. W., Del Negro, L. A., Donnelly, S. G., Keim, E. R., Neuman, J. A., Teverovskaia, E., Wennberg, P. O., Hanisco, T. F., Lanzendorf, E. J., Proffitt, M. H., Margitan, J. J., Wilson, J. C., Elkins, J. W., Stimpfle, R. M., Cohen, R. C., McElroy, C. T., Bui, T. P., Salawitch, R. J., Brown, S. S., Ravishankara, A. R., Portmann, R. W., Ko, M. K. W., Weisenstein, D. K., Newman, P. A.

“…Extensive airborne measurements of the reactive nitrogen reservoir (NOy) and its component nitric oxide (NO) have been made in the lower stratosphere. Box…”
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Ozone destruction and production rates between spring and autumn in the Arctic stratosphere by Fahey, D. W., Gao, R. S., Del Negro, L. A., Keim, E. R., Kawa, S. R., Salawitch, R. J., Wennberg, P. O., Hanisco, T. F., Lanzendorf, E. J., Perkins, K. K., Lloyd, S. A., Swartz, W. H., Proffitt, M. H., Margitan, J. J., Wilson, J. C., Stimpfle, R. M., Cohen, R. C., McElroy, C. T., Webster, C. R., Loewenstein, M., Elkins, J. W., Bui, T. P.

“…In situ measurements of radical and long‐lived species were made in the lower Arctic stratosphere (18 to 20 km) between spring and early autumn in 1997. The…”
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Inorganic chlorine partitioning in the summer lower stratosphere: Modeled and measured [ClONO2]/[HCl] during POLARIS by Voss, P. B., Stimpfle, R. M., Cohen, R. C., Hanisco, T. F., Bonne, G. P., Perkins, K. K., Lanzendorf, E. J., Anderson, J. G., Salawitch, R. J.

“…We examine inorganic chlorine (Cly) partitioning in the summer lower stratosphere using in situ ER-2 aircraft observations made during the Photochemistry of…”
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Comparing atmospheric [HO2]/[OH] to modeled [HO2]/[OH]: Identifying discrepancies with reaction rates by Lanzendorf, E. J., Hanisco, T. F., Wennberg, P. O., Cohen, R. C., Stimpfle, R. M., Anderson, J. G.

“…Reactions that inter‐convert OH and HO2 are directly involved in the catalytic removal of O3 in the lower stratosphere and in the catalytic production of O3 in…”
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Evolution of HCL concentrations in the lower stratosphere from 1991 to 1996 following the eruption of Mt. Pinatubo by Webster, C. R., May, R. D., Michelsen, H. A., Scott, D. C., Wilson, J. C., Jonsson, H. H., Brock, C. A., Dye, J. E., Baumgardner, D., Stimpfle, R. M., Koplow, J. P., Margitan, J. J., Proffitt, M. H., Jaeglé, L., Herman, R. L., Hu, H., Flesch, G. J., Loewenstein, M.

“…In situ measurements of hydrochloric acid in the lower stratosphere reveal that its mean abundance relative to that of total inorganic chlorine (Cly) has…”
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