Search Results - "Konopka, P."

Impact of uncertainties in atmospheric mixing on simulated UTLS composition and related radiative effects by Riese, M., Ploeger, F., Rap, A., Vogel, B., Konopka, P., Dameris, M., Forster, P.

“…The upper troposphere/lower stratosphere (UTLS) region plays an important role in the climate system. Changes in the structure and chemical composition of this…”
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Variability of stratospheric mean age of air and of the local effects of residual circulation and eddy mixing by Ploeger, F., Riese, M., Haenel, F., Konopka, P., Müller, R., Stiller, G.

“…We analyze the variability of mean age of air (AoA) and of the local effects of the stratospheric residual circulation and eddy mixing on AoA within the…”
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Tropospheric ozone trend over Beijing from 2002–2010: ozonesonde measurements and modeling analysis by Wang, Y, Konopka, P, Liu, Y, Chen, H, Müller, R, Plöger, F, Riese, M, Cai, Z, Lü, D

“…Using a combination of ozonesonde data and numerical simulations of the Chemical Lagrangian Model of the Stratosphere (CLaMS), the trend of tropospheric ozone…”
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Quantifying the effects of mixing and residual circulation on trends of stratospheric mean age of air by Ploeger, F., Abalos, M., Birner, T., Konopka, P., Legras, B., Müller, R., Riese, M.

“…It is an outstanding issue to what degree trends in stratospheric mean age of air reflect changes in the (slow) residual circulation and how they are affected…”
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Significant Contributions of Volcanic Aerosols to Decadal Changes in the Stratospheric Circulation by Diallo, M., Ploeger, F., Konopka, P., Birner, T., Müller, R., Riese, M., Garny, H., Legras, B., Ray, E., Berthet, G., Jegou, F.

“…The stratospheric circulation is an important element of climate as it determines the concentration of radiatively active species like water vapor and aerosol…”
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A potential vorticity-based determination of the transport barrier in the Asian summer monsoon anticyclone by Ploeger, F, Gottschling, C, Griessbach, S, Grooß, J.-U, Guenther, G, Konopka, P, Müller, R, Riese, M, Stroh, F, Tao, M, Ungermann, J, Vogel, B, von Hobe, M

“…The Asian summer monsoon provides an important pathway of tropospheric source gases and pollution into the lower stratosphere. This transport is characterized…”
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Dynamical tropopause based on isentropic potential vorticity gradients by Kunz, A., Konopka, P., Müller, R., Pan, L. L.

“…Since its inception, the dynamical tropopause based on potential vorticity (PV) is identified by the PV gradient on isentropes. Conceptually, significant…”
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Chemical and dynamical discontinuity at the extratropical tropopause based on START08 and WACCM analyses by Kunz, A., Pan, L. L., Konopka, P., Kinnison, D. E., Tilmes, S.

“…Using isentropic trace gas gradients of O3 and CO, the discontinuity in the chemical composition of the upper troposphere (UT) and lower stratosphere (LS) is…”
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Annual cycle of ozone at and above the tropical tropopause: observations versus simulations with the Chemical Lagrangian Model of the Stratosphere (CLaMS) by Konopka, P., Grooß, J.-U., Günther, G., Ploeger, F., Pommrich, R., Müller, R., Livesey, N.

“…Multi-annual simulations with the Chemical Lagrangian Model of the Stratosphere (CLaMS) were conducted to study the seasonality of O3 within the stratospheric…”
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Impact of the vertical velocity scheme on modeling transport in the tropical tropopause layer by Ploeger, F., Konopka, P., Günther, G., Grooß, J.-U., Müller, R.

“…To assess the impact of the vertical velocity scheme on modeling transport in the tropical tropopause layer (TTL), 3 month backward trajectories are…”
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Horizontal transport affecting trace gas seasonality in the Tropical Tropopause Layer (TTL) by Ploeger, F., Konopka, P., Müller, R., Fueglistaler, S., Schmidt, T., Manners, J. C., Grooß, J.-U., Günther, G., Forster, P. M., Riese, M.

“…We analyze horizontal transport from midlatitudes into the tropics (in‐mixing) and its impact on seasonal variations of ozone, carbon monoxide and water vapor…”
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Impact of the 2009 major sudden stratospheric warming on the composition of the stratosphere by Tao, M, Konopka, P, Ploeger, F, Grooß, J.-U, Müller, R, Volk, C. M, Walker, K. A, Riese, M

“…In a case study of a remarkable major sudden stratospheric warming (SSW) during the boreal winter 2008/09, we investigate how transport and mixing triggered by…”
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Ozone seasonality above the tropical tropopause: reconciling the Eulerian and Lagrangian perspectives of transport processes by Abalos, M, Ploeger, F, Konopka, P, Randel, W. J, Serrano, E

“…We aim to reconcile the recently published, apparently contrasting results regarding the relative importance of tropical upwelling versus horizontal transport…”
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Hydration and dehydration at the tropical tropopause by Schiller, C., Grooß, J.-U., Konopka, P., Plöger, F., Silva dos Santos, F. H., Spelten, N.

“…High-resolution water measurements from three tropical airborne missions in Northern Australia, Southern Brazil and West Africa in different seasons are…”
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Comparison of Fast In situ Stratospheric Hygrometer (FISH) measurements of water vapor in the upper troposphere and lower stratosphere (UTLS) with ECMWF (re)analysis data by Kunz, A., Spelten, N., Konopka, P., Müller, R., Forbes, R. M., Wernli, H.

“…An evaluation of water vapor in the upper troposphere and lower stratosphere (UTLS) of the ERA-Interim, the global atmospheric reanalysis produced by the…”
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Tropospheric intrusions associated with the secondary tropopause by Pan, L. L., Randel, W. J., Gille, J. C., Hall, W. D., Nardi, B., Massie, S., Yudin, V., Khosravi, R., Konopka, P., Tarasick, D.

“…Deep intrusions of tropospheric air into the lower stratosphere above the subtropical jet are investigated using new observations and meteorological analyses…”
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Tropical troposphere to stratosphere transport of carbon monoxide and long-lived trace species in the Chemical Lagrangian Model of the Stratosphere (CLaMS) by Pommrich, R., Müller, R., Grooß, J.-U., Konopka, P., Ploeger, F., Vogel, B., Tao, M., Hoppe, C. M., Günther, G., Spelten, N., Hoffmann, L., Pumphrey, H.-C., Viciani, S., D'Amato, F., Volk, C. M., Hoor, P., Schlager, H., Riese, M.

“…Variations in the mixing ratio of trace gases of tropospheric origin entering the stratosphere in the tropics are of interest for assessing both troposphere to…”
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Insight from ozone and water vapour on transport in the tropical tropopause layer (TTL) by Ploeger, F., Fueglistaler, S., Grooß, J.-U., Günther, G., Konopka, P., Liu, Y.S., Müller, R., Ravegnani, F., Schiller, C., Ulanovski, A., Riese, M.

“…We explore the potential of ozone observations to constrain transport processes in the tropical tropopause layer (TTL), and contrast it with insights that can…”
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Transport of Antarctic stratospheric strongly dehydrated air into the troposphere observed during the HALO-ESMVal campaign 2012 by Rolf, C, Afchine, A, Bozem, H, Buchholz, B, Ebert, V, Guggenmoser, T, Hoor, P, Konopka, P, Kretschmer, E, Müller, S, Schlager, H, Spelten, N, Sumińska-Ebersoldt, O, Ungermann, J, Zahn, A, Krämer, M

“…Dehydration in the Antarctic winter stratosphere is a well-known phenomenon that is annually observed by satellites and occasionally observed by balloon-borne…”
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High static stability in the mixing layer above the extratropical tropopause by Kunz, A., Konopka, P., Müller, R., Pan, L. L., Schiller, C., Rohrer, F.

“…The relationship between the static stability N2 and the mixing in the tropopause inversion layer (TIL) is investigated using in situ aircraft observations…”
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