Search Results - "Strahan, S."

Stratospheric Circulation Changes Associated with the Hunga Tonga-Hunga Ha'apai Eruption by Coy, L., Newman, P. A., Wargan, K., Partyka, G., Strahan, S., Pawson, S.

“…The 15 January 2022 eruption of the Hunga Tonga-Hunga Ha'apai underwater volcano (20.5°S, 175.4°W) injected a record amount of water directly into the…”
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Chemical and dynamical impacts of stratospheric sudden warmings on Arctic ozone variability by Strahan, S. E., Douglass, A. R., Steenrod, S. D.

“…We use the Global Modeling Initiative (GMI) chemistry and transport model with Modern‐Era Retrospective Analysis for Research and Applications (MERRA)…”
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Modulation of Antarctic vortex composition by the quasi-biennial oscillation by Strahan, S. E., Oman, L. D., Douglass, A. R., Coy, L.

“…Using a decade of Aura Microwave Limb Sounder observations, we show distinctly different N2O distributions in Southern Hemisphere winter that depend on the…”
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Tropospheric ozone variability in the tropics from ENSO to MJO and shorter timescales by Ziemke, J R, Douglass, A R, Oman, L D, Strahan, S E, Duncan, B N

“…Aura OMI and MLS measurements are combined to produce daily maps of tropospheric ozone beginning October 2004. We show that El Niño-Southern Oscillation (ENSO)…”
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Inorganic chlorine variability in the Antarctic vortex and implications for ozone recovery by Strahan, S. E., Douglass, A. R., Newman, P. A., Steenrod, S. D.

“…We infer the interannual variability of inorganic chlorine in the Antarctic lower stratospheric vortex using 9 years of Aura Microwave Limb Sounder (MLS)…”
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Nitrogen and sulfur deposition on regional and global scales: A multimodel evaluation by Dentener, F, Drevet, J, Lamarque, J.F, Bey, I, Eickhout, B, Fiore, A.M, Hauglustaine, D, Horowitz, L.W, Krol, M, Kulshrestha, U.C

“…We use 23 atmospheric chemistry transport models to calculate current and future (2030) deposition of reactive nitrogen (NOy, NHx) and sulfate (SOx) to land…”
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Seasonal Variation of the Quasi-Biennial Oscillation Descent by Coy, L., Newman, P. A., Strahan, S, Pawson, S.

“…This study examines variations through the year in the rate of descent of the Quasi-Biennial Oscillation (QBO) wind in the tropical lower stratosphere. The…”
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Assessment and applications of NASA ozone data products derived from Aura OMI/MLS satellite measurements in context of the GMI chemical transport model by Ziemke, J. R., Olsen, M. A., Witte, J. C., Douglass, A. R., Strahan, S. E., Wargan, K., Liu, X., Schoeberl, M. R., Yang, K., Kaplan, T. B., Pawson, S., Duncan, B. N., Newman, P. A., Bhartia, P. K., Heney, M. K.

“…Measurements from the Ozone Monitoring Instrument (OMI) and Microwave Limb Sounder (MLS), both on board the Aura spacecraft, have been used to produce daily…”
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The contributions of chemistry and transport to low arctic ozone in March 2011 derived from Aura MLS observations by Strahan, S. E., Douglass, A. R., Newman, P. A.

“…Stratospheric and total columns of Arctic O3 (63–90oN) in late March 2011 averaged 320 and 349 DU, respectively, 50–100 DU lower than any of the previous 6…”
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Observationally derived transport diagnostics for the lowermost stratosphere and their application to the GMI chemistry and transport model by Strahan, S. E., Duncan, B. N., Hoor, P.

“…Transport from the surface to the lowermost stratosphere (LMS) can occur on timescales of a few months or less, making it possible for short-lived tropospheric…”
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Understanding differences in chemistry climate model projections of stratospheric ozone by Douglass, A. R., Strahan, S. E., Oman, L. D., Stolarski, R. S.

“…Chemistry climate models (CCMs) are used to project future evolution of stratospheric ozone as concentrations of ozone-depleting substances (ODSs) decrease and…”
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The Global Atmospheric Environment for the Next Generation by Dentener, F, Stevenson, D, Ellingsen, K, van Noije, T, Schultz, M, Amann, M, Atherton, C, Bell, N, Bergmann, D, Bey, I, Bouwman, L, Butler, T, Cofala, J, Collins, B, Drevet, J, Doherty, R, Eickhout, B, Eskes, H, Fiore, A, Gauss, M, Hauglustaine, D, Horowitz, L, Isaksen, I. S. A, Josse, B, Lawrence, M, Krol, M, Lamarque, J. F, Montanaro, V, Müller, J. F, Peuch, V. H, Pitari, G, Pyle, J, Rast, S, Rodriguez, J, Sanderson, M, Savage, N. H, Shindell, D, Strahan, S, Szopa, S, Sudo, K, Van Dingenen, R, Wild, O, Zeng, G

“…Air quality, ecosystem exposure to nitrogen deposition, and climate change are intimately coupled problems:  we assess changes in the global atmospheric…”
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Comparison of lower stratospheric tropical mean vertical velocities by Schoeberl, M. R., Douglass, A. R., Stolarski, R. S., Pawson, S., Strahan, S. E., Read, W.

“…We have analyzed 13 years (1993–2005) of tropical stratospheric water vapor data from the Halogen Occultation Experiment and over 3 years of data (October 2004…”
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Model study of the cross-tropopause transport of biomass burning pollution by Duncan, B. N., Strahan, S. E., Yoshida, Y., Steenrod, S. D., Livesey, N.

“…We present a modeling study of the troposphere-to-stratosphere transport (TST) of pollution from major biomass burning regions to the tropical upper…”
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Understanding differences in upper stratospheric ozone response to changes in chlorine and temperature as computed using CCMVal-2 models by Douglass, A. R., Stolarski, R. S., Strahan, S. E., Oman, L. D.

“…Projections of future ozone levels are made using models that couple a general circulation model with a representation of atmospheric photochemical processes,…”
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Multimodel ensemble simulations of present-day and near-future tropospheric ozone by Stevenson, D.S, Dentener, F.J, Schultz, M.G, Ellingsen, K, Noije, T.P.C. van, Wild, O, Zeng, G, Amann, M, Atherton, C.S, Bell, N, Bergmann, D.J, Bey, I, Butler, T, Cofala, J, Collins, W.J, Derwent, R.G, Doherty, R.M, Drevet, J, Eskes, H.J, Fiore, A.M, Gauss, M, Hauglustaine, D.A, Horowitz, L.W, Isaksen, I.S.A, Krol, M.C, Lamarque, J.F, Lawrence, M.G, Montanaro, V, Muller, J.F, Pitari, G, Prather, M.J, Pyle, J.A, Rast, S, Rodriguez, J.M, Sanderson, M.G, Savage, N.H, Shindell, D.T, Strahan, S.E, Sudo, K, Szopa, S

“…Global tropospheric ozone distributions, budgets, and radiative forcings from an ensemble of 26 state‐of‐the‐art atmospheric chemistry models have been…”
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Hydroxyurea at escalated dose versus fixed low‐dose hydroxyurea in adults with sickle cell disease by Ogu, Ugochi O., Mukhopadhyay, Ayesha, Patel, Kruti, Nelson, Marquita N., Strahan, KayLee S., Wu, Lin, Smeltzer, Matthew P., Ataga, Kenneth I.

“…Hydroxyurea reduces the frequency of vaso‐occlusive complications, increases hemoglobin, and decreases mortality in sickle cell disease (SCD). Although current…”
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Sensitivity of aerosol optical thickness and aerosol direct radiative effect to relative humidity by Bian, H., Chin, M., Rodriguez, J. M., Yu, H., Penner, J. E., Strahan, S.

“…We present a sensitivity study of the effects of spatial and temporal resolution of atmospheric relative humidity (RH) on calculated aerosol optical thickness…”
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Using transport diagnostics to understand chemistry climate model ozone simulations by Strahan, S. E., Douglass, A. R., Stolarski, R. S., Akiyoshi, H., Bekki, S., Braesicke, P., Butchart, N., Chipperfield, M. P., Cugnet, D., Dhomse, S., Frith, S. M., Gettelman, A., Hardiman, S. C., Kinnison, D. E., Lamarque, J.-F., Mancini, E., Marchand, M., Michou, M., Morgenstern, O., Nakamura, T., Olivié, D., Pawson, S., Pitari, G., Plummer, D. A., Pyle, J. A., Scinocca, J. F., Shepherd, T. G., Shibata, K., Smale, D., Teyssèdre, H., Tian, W., Yamashita, Y.

“…We use observations of N2O and mean age to identify realistic transport in models in order to explain their ozone predictions. The results are applied to 15…”
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Multimodel estimates of atmospheric lifetimes of long-lived ozone-depleting substances: Present and future by Chipperfield, M. P., Liang, Q., Strahan, S. E., Morgenstern, O., Dhomse, S. S., Abraham, N. L., Archibald, A. T., Bekki, S., Braesicke, P., Di Genova, G., Fleming, E. L., Hardiman, S. C., Iachetti, D., Jackman, C. H., Kinnison, D. E., Marchand, M., Pitari, G., Pyle, J. A., Rozanov, E., Stenke, A., Tummon, F.

“…We have diagnosed the lifetimes of long-lived source gases emitted at the surface and removed in the stratosphere using six three-dimensional chemistry-climate…”
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