Search Results - "Gathen, P."

Near‐Complete Local Reduction of Arctic Stratospheric Ozone by Severe Chemical Loss in Spring 2020 by Wohltmann, I., Gathen, P., Lehmann, R., Maturilli, M., Deckelmann, H., Manney, G. L., Davies, J., Tarasick, D., Jepsen, N., Kivi, R., Lyall, N., Rex, M.

“…In the Antarctic ozone hole, ozone mixing ratios have been decreasing to extremely low values of 0.01–0.1 ppm in nearly all spring seasons since the late…”
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Northern Hemisphere Stratospheric Ozone Depletion Caused by Solar Proton Events: The Role of the Polar Vortex by Denton, M. H., Kivi, R., Ulich, T., Clilverd, M. A., Rodger, C. J., Gathen, P.

“…Ozonesonde data from four sites are analyzed in relation to 191 solar proton events from 1989 to 2016. Analysis shows ozone depletion (~10–35 km altitude)…”
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Time-varying trends from Arctic ozonesonde time series in the years 1994–2022 by Nilsen, K., Kivi, R., Laine, M., Poyraz, D., Van Malderen, R., von der Gathen, P., Tarasick, D. W., Thölix, L., Jepsen, N.

“…Although evidence of recovery in Antarctic stratospheric ozone has been found, evidence of recovery in Arctic ozone is still elusive, even though 25 years have…”
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Impacts of midlatitude precursor emissions and local photochemistry on ozone abundances in the Arctic by Walker, T. W., Jones, D. B. A., Parrington, M., Henze, D. K., Murray, L. T., Bottenheim, J. W., Anlauf, K., Worden, J. R., Bowman, K. W., Shim, C., Singh, K., Kopacz, M., Tarasick, D. W., Davies, J., von der Gathen, P., Thompson, A. M., Carouge, C. C.

“…We assess the impact of transport of pollution from midlatitudes on the abundance of ozone in the Arctic in summer 2006 using the GEOS‐Chem global chemical…”
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Arctic ozone loss and climate change by Rex, M., Salawitch, R. J., von der Gathen, P., Harris, N. R. P., Chipperfield, M. P., Naujokat, B.

“…We report the first empirical quantification of the relation between winter‐spring loss of Arctic ozone and changes in stratospheric climate. Our observations…”
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Chemical Evolution of the Exceptional Arctic Stratospheric Winter 2019/2020 Compared to Previous Arctic and Antarctic Winters by Wohltmann, I., Gathen, P., Lehmann, R., Deckelmann, H., Manney, G. L., Davies, J., Tarasick, D., Jepsen, N., Kivi, R., Lyall, N., Rex, M.

“…The winter 2019/2020 showed the lowest ozone mixing ratios ever observed in the Arctic winter stratosphere. It was the coldest Arctic stratospheric winter on…”
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A closer look at Arctic ozone loss and polar stratospheric clouds by Harris, N. R. P., Lehmann, R., Rex, M., von der Gathen, P.

“…The empirical relationship found between column-integrated Arctic ozone loss and the potential volume of polar stratospheric clouds inferred from…”
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Arctic winter 2005: Implications for stratospheric ozone loss and climate change by Rex, M., Salawitch, R. J., Deckelmann, H., von der Gathen, P., Harris, N. R. P., Chipperfield, M. P., Naujokat, B., Reimer, E., Allaart, M., Andersen, S. B., Bevilacqua, R., Braathen, G. O., Claude, H., Davies, J., De Backer, H., Dier, H., Dorokhov, V., Fast, H., Gerding, M., Godin-Beekmann, S., Hoppel, K., Johnson, B., Kyrö, E., Litynska, Z., Moore, D., Nakane, H., Parrondo, M. C., Risley Jr, A. D., Skrivankova, P., Stübi, R., Viatte, P., Yushkov, V., Zerefos, C.

“…The Arctic polar vortex exhibited widespread regions of low temperatures during the winter of 2005, resulting in significant ozone depletion by chlorine and…”
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Reconciliation of essential process parameters for an enhanced predictability of Arctic stratospheric ozone loss and its climate interactions (RECONCILE): activities and results by von Hobe, M, Bekki, S, Borrmann, S, Cairo, F, D'Amato, F, Di Donfrancesco, G, Dörnbrack, A, Ebersoldt, A, Ebert, M, Emde, C, Engel, I, Ern, M, Frey, W, Genco, S, Griessbach, S, Grooß, J.-U, Gulde, T, Günther, G, Hösen, E, Hoffmann, L, Homonnai, V, Hoyle, C. R, Isaksen, I. S. A, Jackson, D. R, Jánosi, I. M, Jones, R. L, Kandler, K, Kalicinsky, C, Keil, A, Khaykin, S. M, Khosrawi, F, Kivi, R, Kuttippurath, J, Laube, J. C, Lefèvre, F, Lehmann, R, Ludmann, S, Luo, B. P, Marchand, M, Meyer, J, Mitev, V, Molleker, S, Müller, R, Oelhaf, H, Olschewski, F, Orsolini, Y, Peter, T, Pfeilsticker, K, Piesch, C, Pitts, M. C, Poole, L. R, Pope, F. D, Ravegnani, F, Rex, M, Riese, M, Röckmann, T, Rognerud, B, Roiger, A, Rolf, C, Santee, M. L, Scheibe, M, Schiller, C, Schlager, H, Siciliani de Cumis, M, Sitnikov, N, Søvde, O. A, Spang, R, Spelten, N, Stordal, F, Sumińska-Ebersoldt, O, Ulanovski, A, Ungermann, J, Viciani, S, Volk, C. M, vom Scheidt, M, von der Gathen, P, Walker, K, Wegner, T, Weigel, R, Weinbruch, S, Wetzel, G, Wienhold, F. G, Wohltmann, I, Woiwode, W, Young, I. A. K, Yushkov, V, Zobrist, B, Stroh, F

“…The international research project RECONCILE has addressed central questions regarding polar ozone depletion, with the objective to quantify some of the most…”
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A multi-model analysis of vertical ozone profiles by Jonson, J. E., Stohl, A., Fiore, A. M., Hess, P., Szopa, S., Wild, O., Zeng, G., Dentener, F. J., Lupu, A., Schultz, M. G., Duncan, B. N., Sudo, K., Wind, P., Schulz, M., Marmer, E., Cuvelier, C., Keating, T., Zuber, A., Valdebenito, A., Dorokhov, V., De Backer, H., Davies, J., Chen, G. H., Johnson, B., Tarasick, D. W., Stübi, R., Newchurch, M.J., von der Gathen, P., Steinbrecht, W., Claude, H.

“…A multi-model study of the long-range transport of ozone and its precursors from major anthropogenic source regions was coordinated by the Task Force on…”
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A trajectory-based estimate of the tropospheric ozone column using the residual method by Schoeberl, M. R., Ziemke, J. R., Bojkov, B., Livesey, N., Duncan, B., Strahan, S., Froidevaux, L., Kulawik, S., Bhartia, P. K., Chandra, S., Levelt, P. F., Witte, J. C., Thompson, A. M., Cuevas, E., Redondas, A., Tarasick, D. W., Davies, J., Bodeker, G., Hansen, G., Johnson, B. J., Oltmans, S. J., Vömel, H., Allaart, M., Kelder, H., Newchurch, M., Godin-Beekmann, S., Ancellet, G., Claude, H., Andersen, S. B., Kyrö, E., Parrondos, M., Yela, M., Zablocki, G., Moore, D., Dier, H., von der Gathen, P., Viatte, P., Stübi, R., Calpini, B., Skrivankova, P., Dorokhov, V., de Backer, H., Schmidlin, F. J., Coetzee, G., Fujiwara, M., Thouret, V., Posny, F., Morris, G., Merrill, J., Leong, C. P., Koenig-Langlo, G., Joseph, E.

“…We estimate the tropospheric column ozone using a forward trajectory model to increase the horizontal resolution of the Aura Microwave Limb Sounder (MLS)…”
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Large chemical ozone loss in 2004/2005 Arctic winter/spring by Feng, W., Chipperfield, M. P., Davies, S., von der Gathen, P., Kyrö, E., Volk, C. M., Ulanovsky, A., Belyaev, G.

“…We have used a three‐dimensional chemical transport model to quantify Arctic ozone loss in 2004/2005 and compare it to other winters through 2006. Relative to…”
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Ozonesonde observations in the Arctic during 1989–2003: Ozone variability and trends in the lower stratosphere and free troposphere by Kivi, R., Kyrö, E., Turunen, T., Harris, N. R. P., von der Gathen, P., Rex, M., Andersen, S. B., Wohltmann, I.

“…We have studied the interannual and longer‐term variations in ozone profiles over the Arctic from 1989 to 2003 using ozonesonde observations from seven…”
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Mid-winter lower stratosphere temperatures in the Antarctic vortex: comparison between observations and ECMWF and NCEP operational models by Parrondo, M. C., Yela, M., Gil, M., von der Gathen, P., Ochoa, H.

“…Radiosonde temperature profiles from Belgrano (78° S) and other Antarctic stations have been compared with European Centre for Medium-Range Weather Forecasting…”
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Large decadal scale changes of polar ozone suggest solar influence by Sinnhuber, B.-M., von der Gathen, P., Sinnhuber, M., Rex, M., König-Langlo, G., Oltmans, S. J.

“…Long-term measurements of polar ozone show an unexpectedly large decadal scale variability in the mid-stratosphere during winter. Negative ozone anomalies are…”
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Three-dimensional model study of the Arctic ozone loss in 2002/2003 and comparison with 1999/2000 and 2003/2004 by Feng, W., Chipperfield, M. P., Davies, S., Sen, B., Toon, G., Blavier, J. F., Webster, C. R., Volk, C. M., Ulanovsky, A., Ravegnani, F., von der Gathen, P., Jost, H., Richard, E. C., Claude, H.

“…We have used the SLIMCAT 3-D off-line chemical transport model (CTM) to quantify the Arctic chemical ozone loss in the year 2002/2003 and compare it with…”
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Climatology of UTLS ozone and the ratio of ozone and potential vorticity over northern Europe by Rao, T. Narayana, Kirkwood, S., Arvelius, J., von der Gathen, P., Kivi, R.

“…Annual and interannual variations of ozone in the upper troposphere and lower stratosphere (UTLS) region have been studied using ozonesonde data collected…”
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Ground-based assessment of the bias and long-term stability of fourteen limb and occultation ozone profile data records by Hubert, D, Lambert, J-C, Verhoelst, T, Granville, J, Keppens, A, Baray, J-L, Cortesi, U, Degenstein, D A, Froidevaux, L, Godin-Beekmann, S, Hoppel, K W, Kyrölä, E, Leblanc, T, Lichtenberg, G, McElroy, C T, Murtagh, D, Nakane, H, Querel, R, Russell, 3rd, J M, Salvador, J, Smit, H G J, Stebel, K, Steinbrecht, W, Strawbridge, K B, Stübi, R, Swart, D P J, Taha, G, Thompson, A M, Urban, J, van Gijsel, J A E, von der Gathen, P, Walker, K A, Wolfram, E, Zawodny, J M

“…The ozone profile records of a large number of limb and occultation satellite instruments are widely used to address several key questions in ozone research…”
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Bias determination and precision validation of ozone profiles from MIPAS-Envisat retrieved with the IMK-IAA processor by Steck, T., von Clarmann, T., Fischer, H., Funke, B., Glatthor, N., Grabowski, U., Höpfner, M., Kellmann, S., Kiefer, M., Linden, A., Milz, M., Stiller, G. P., Wang, D. Y., Allaart, M., Blumenstock, Th, von der Gathen, P., Hansen, G., Hase, F., Hochschild, G., Kopp, G., Kyrö, E., Oelhaf, H., Raffalski, U., Redondas Marrero, A., Remsberg, E., Russell III, J., Stebel, K., Steinbrecht, W., Wetzel, G., Yela, M., Zhang, G.

“…This paper characterizes vertical ozone profiles retrieved with the IMK-IAA (Institute for Meteorology and Climate Research, Karlsruhe – Instituto de…”
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Comparison of empirically derived ozone losses in the Arctic vortex by Harris, N. R. P., Rex, M., Goutail, F., Knudsen, B. M., Manney, G. L., Müller, R., von der Gathen, P.

“…A number of studies have reported empirical estimates of ozone loss in the Arctic vortex. They have used satellite and in situ measurements and have…”
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