Search Results - "Tourpali, K"

Ozone depletion and climate change: impacts on UV radiation by Bais, A F, McKenzie, R L, Bernhard, G, Aucamp, P J, Ilyas, M, Madronich, S, Tourpali, K

“…We assess the importance of factors that determine the intensity of UV radiation at the Earth's surface. Among these, atmospheric ozone, which absorbs UV…”
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Recent variability of the solar spectral irradiance and its impact on climate modelling by Ermolli, I, Matthes, K, Dudok de Wit, T, Krivova, N. A, Tourpali, K, Weber, M, Unruh, Y. C, Gray, L, Langematz, U, Pilewskie, P, Rozanov, E, Schmutz, W, Shapiro, A, Solanki, S. K, Woods, T. N

“…The lack of long and reliable time series of solar spectral irradiance (SSI) measurements makes an accurate quantification of solar contributions to recent…”
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Solar signals in CMIP‐5 simulations: the stratospheric pathway by Mitchell, D. M., Misios, S., Gray, L. J., Tourpali, K., Matthes, K., Hood, L., Schmidt, H., Chiodo, G., Thiéblemont, R., Rozanov, E., Shindell, D., Krivolutsky, A.

“…The 11 year solar‐cycle component of climate variability is assessed in historical simulations of models taken from the Coupled Model Intercomparison Project,…”
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Solar signals in CMIP‐5 simulations: effects of atmosphere–ocean coupling by Misios, S., Mitchell, D. M., Gray, L. J., Tourpali, K., Matthes, K., Hood, L., Schmidt, H., Chiodo, G., Thiéblemont, R., Rozanov, E., Krivolutsky, A.

“…The surface response to the 11 year solar cycle is assessed in ensemble simulations of the twentieth century climate performed in the framework of the fifth…”
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Solar signals in CMIP‐5 simulations: the ozone response by Hood, L. L., Misios, S., Mitchell, D. M., Rozanov, E., Gray, L. J., Tourpali, K., Matthes, K., Schmidt, H., Chiodo, G., Thiéblemont, R., Shindell, D., Krivolutsky, A.

“…A multiple linear regression statistical method is applied to model data taken from the Coupled Model Intercomparison Project, phase 5 (CMIP‐5) to estimate the…”
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Evidence of a possible turning point in solar UV-B over Canada, Europe and Japan by Zerefos, C. S, Tourpali, K, Eleftheratos, K, Kazadzis, S, Meleti, C, Feister, U, Koskela, T, Heikkilä, A

“…This study examines the long-term variability of UV solar irradiances at 305 nm and 325 nm over selected sites in Canada, Europe and Japan. Site selection was…”
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Projected changes in solar UV radiation in the Arctic and sub-Arctic Oceans: Effects from changes in reflectivity, ice transmittance, clouds, and ozone by Fountoulakis, I., Bais, A. F., Tourpali, K., Fragkos, K., Misios, S.

“…Ultraviolet‐B (UV‐B), UV‐A, and erythemal solar irradiance over ocean‐covered areas north of 55°N are simulated for the past (1950–1960), present (2005–2015),…”
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Projections of UV radiation changes in the 21st century: impact of ozone recovery and cloud effects by Bais, A. F., Tourpali, K., Kazantzidis, A., Akiyoshi, H., Bekki, S., Braesicke, P., Chipperfield, M. P., Dameris, M., Eyring, V., Garny, H., Iachetti, D., Jöckel, P., Kubin, A., Langematz, U., Mancini, E., Michou, M., Morgenstern, O., Nakamura, T., Newman, P. A., Pitari, G., Plummer, D. A., Rozanov, E., Shepherd, T. G., Shibata, K., Tian, W., Yamashita, Y.

“…Monthly averaged surface erythemal solar irradiance (UV-Ery) for local noon from 1960 to 2100 has been derived using radiative transfer calculations and…”
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Coupled chemistry climate model simulations of the solar cycle in ozone and temperature by Austin, J., Tourpali, K., Rozanov, E., Akiyoshi, H., Bekki, S., Bodeker, G., Brühl, C., Butchart, N., Chipperfield, M., Deushi, M., Fomichev, V. I., Giorgetta, M. A., Gray, L., Kodera, K., Lott, F., Manzini, E., Marsh, D., Matthes, K., Nagashima, T., Shibata, K., Stolarski, R. S., Struthers, H., Tian, W.

“…The 11‐year solar cycles in ozone and temperature are examined using new simulations of coupled chemistry climate models. The results show a secondary maximum…”
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Extreme total column ozone events and effects on UV solar radiation at Thessaloniki, Greece by Fragkos, K., Bais, A.F., Fountoulakis, I., Balis, D., Tourpali, K., Meleti, C., Zanis, P.

“…Thirty years of total ozone column (TOC) measurements conducted by a Brewer spectrophotometer, operating in Thessaloniki (40.6°) since March 1982, have been…”
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Evidence for an earlier greenhouse cooling effect in the stratosphere before 1980 over the Northern Hemisphere by Zerefos, C. S, Tourpali, K, Zanis, P, Eleftheratos, K, Repapis, C, Goodman, A, Wuebbles, D, Isaksen, I. S. A, Luterbacher, J

“…This study provides a new look at the observed and calculated long-term temperature changes from the lower troposphere to the lower stratosphere since 1958…”
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Changes in surface shortwave solar irradiance from 1993 to 2011 at Thessaloniki (Greece) by Bais, A. F., Drosoglou, Th, Meleti, C., Tourpali, K., Kouremeti, N.

“…ABSTRACT The variability of shortwave downward solar irradiance (SDR) received at Earth's surface over Thessaloniki, Greece for the period 1993–2011 is…”
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Observed and modelled record ozone decline over the Arctic during winter/spring 2011 by Balis, D., Isaksen, I. S. A., Zerefos, C., Zyrichidou, I., Eleftheratos, K., Tourpali, K., Bojkov, R., Rognerud, B., Stordal, F., Søvde, O. A., Orsolini, Y.

“…This work describes observational and modelling results of the ozone depletion which took place during the winter/spring of 2011 in the Arctic stratosphere…”
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Ozone and Spectroradiometric UV Changes in the Past 20 Years over High Latitudes by Eleftheratos, K., Kazadzis, S., Zerefos, C. S., Tourpali, K., Meleti, C., Balis, D., Zyrichidou, I., Lakkala, K., Feister, U., Koskela, T., Heikkilä, A., Karhu, J. M.

“…This study analyzes changes in solar ultraviolet (UV) irradiances at 305 and 325 nm at selected sites located at high latitudes of both hemispheres. Site…”
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Ozone Variations Derived by a Chemical Transport Model by Eleftheratos, K., Isaksen, I., Zerefos, C., Nastos, P., Tourpali, K., Rognerud, B.

“…The results of a comparison between monthly mean ozone column variations calculated from the chemical transport model Oslo CTM2 and those derived from solar…”
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Clear sky UV simulations for the 21st century based on ozone and temperature projections from Chemistry-Climate Models by Tourpali, K., Bais, A. F., Kazantzidis, A., Zerefos, C. S., Akiyoshi, H., Austin, J., Brühl, C., Butchart, N., Chipperfield, M. P., Dameris, M., Deushi, M., Eyring, V., Giorgetta, M. A., Kinnison, D. E., Mancini, E., Marsh, D. R., Nagashima, T., Pitari, G., Plummer, D. A., Rozanov, E., Shibata, K., Tian, W.

“…We have estimated changes in surface solar ultraviolet (UV) radiation under cloud free conditions in the 21st century based on simulations of 11 coupled…”
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On the turnaround of stratospheric ozone trends deduced from the reevaluated Umkehr record of Arosa, Switzerland by Zanis, P., Maillard, E., Staehelin, J., Zerefos, C., Kosmidis, E., Tourpali, K., Wohltmann, I.

“…In this work, we investigate the issue of the turnaround in ozone trends of the recently homogenized Umkehr ozone record of Arosa, Switzerland, which is the…”
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The 11-year solar cycle in stratospheric ozone: Comparison between Umkehr and SBUVv8 and effects on surface erythemal irradiance by Tourpali, K., Zerefos, C. S., Balis, D. S., Bais, A. F.

“…Ozone profiles derived from ground‐based Umkehr measurements at five stations and from the merged data set of Solar Backscattered Ultra Violet (SBUVv8)…”
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Stratospheric and tropospheric response to enhanced solar UV radiation: A model study by Tourpali, K., Schuurmans, C. J. E., van Dorland, R., Steil, B., Brühl, C.

“…The atmospheric response to the 11‐year solar cycle is studied using a fully interactive 3‐D coupled chemistry‐general circulation model with a complete…”
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Solar cycle modulation of the Arctic Oscillation in a chemistry-climate model by Tourpali, K., Schuurmans, C. J. E., van Dorland, R., Steil, B., Brühl, C., Manzini, E.

“…The structural modulation of the Arctic Oscillation (AO) induced by a realistic enhancement of the ultraviolet (UV) radiation associated with the 11‐year solar…”
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