Articles | Volume 37, issue 2
https://doi.org/10.5194/angeo-37-129-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-37-129-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Regular paper
| 
06 Mar 2019
Regular paper |
| 06 Mar 2019
| 06 Mar 2019
Spring and summer time ozone and solar ultraviolet radiation variations over Cape Point, South Africa
Department Geography, Geoinformatics and Meteorology, University of Pretoria, Pretoria, 0002, South Africa
South African Weather Service, Pretoria, 0181, South Africa
Jelena V. Ajtić
Faculty of Veterinary Medicine, University of Belgrade, Bulevar oslobodjenja 18, 11000 Belgrade, Serbia
Hassan Bencherif
Université de La Réunion, Laboratoire de l'Atmosphère et des Cyclones, UMR 8105, 15 Avenue René Cassin, CS 92003, Saint-Denis, Cedex, Réunion, France
School of Chemistry and Physics, University of KwaZulu-Natal, Westville, Durban, South Africa
Nelson Bègue
Université de La Réunion, Laboratoire de l'Atmosphère et des Cyclones, UMR 8105, 15 Avenue René Cassin, CS 92003, Saint-Denis, Cedex, Réunion, France
Jean-Maurice Cadet
Université de La Réunion, Laboratoire de l'Atmosphère et des Cyclones, UMR 8105, 15 Avenue René Cassin, CS 92003, Saint-Denis, Cedex, Réunion, France
Caradee Y. Wright
Department Geography, Geoinformatics and Meteorology, University of Pretoria, Pretoria, 0002, South Africa
Environment and Health Research Unit, South African Medical Research Council, Pretoria, 0001, South Africa
Related authors
Nelson Bègue, Lerato Shikwambana, Hassan Bencherif, Juan Pallotta, Venkataraman Sivakumar, Elian Wolfram, Nkanyiso Mbatha, Facundo Orte, David Jean Du Preez, Marion Ranaivombola, Stuart Piketh, and Paola Formenti
Ann. Geophys., 38, 395–420, https://doi.org/10.5194/angeo-38-395-2020, https://doi.org/10.5194/angeo-38-395-2020, 2020
Short summary
Short summary
This study investigates the influence of the 2015 Calbuco eruption (41.2°S, 72.4°W; Chile) on the total columnar aerosol optical properties in the Southern Hemisphere. The well-known technique of sun photometry was applied to the investigation of the transport and the spatio-temporal evolution of the optical properties of the volcanic plume. The CIMEL sun photometer measurements performed over six South American and three African sites were statistically analyzed.
Tristan Millet, Hassan Bencherif, Thierry Portafaix, Nelson Bègue, Alexandre Baron, Valentin Duflot, Michaël Sicard, Jean-Marc Metzger, Guillaume Payen, Nicolas Marquestaut, and Sophie Godin-Beekmann
EGUsphere, https://doi.org/10.5194/egusphere-2023-2645, https://doi.org/10.5194/egusphere-2023-2645, 2023
Preprint withdrawn
Short summary
Short summary
The eruption of the Hunga Tonga volcano in January 2022 released substantial amounts of aerosols, sulfur dioxide, and water vapor into the stratosphere. Satellite and ground instruments followed the displacement of the volcanic aerosol plume and its impact on ozone levels over the Indian Ocean. Ozone data reveal the presence of a persistent ozone mini-hole structure from 17 January to 22 January, with most ozone depletion occurring within the ozone layer at the location of the aerosol plume.
Nelson Bègue, Alexandre Baron, Gisèle Krysztofiak, Gwenaël Berthet, Hassan Bencherif, Corinna Kloss, Fabrice Jégou, Sergey Khaykin, Marion Ranaivombola, Tristan Millet, Thierry Portafaix, Valentin Duflot, Philippe Keckhut, Hélène Vérèmes, Guillaume Payen, Masha Kumar Sha, Pierre-François Coheur, Cathy Clerbaux, Michaël Sicard, Tetsu Sakai, Richard Querel, Ben Liley, Dan Smale, Isamu Morino, Osamu Ochino, Tomohiro Nagai, Penny Smale, and John Robinson
EGUsphere, https://doi.org/10.5194/egusphere-2023-1946, https://doi.org/10.5194/egusphere-2023-1946, 2023
Short summary
Short summary
This study treats on the transport of the biomass burning (BB) products, induced during the 2019–20 extreme extreme Australian bushfire events, over the Southwest Indian Ocean. The BB activity in eastern Africa, weak during the wet season, contributed to modulate the atmospheric composition over this region. The simultaneous presence of African and Australian BB products has been recorded at Reunion. This reveals the complex variability of the atmospheric compostion over the SWIO basin.
Bibiana Lopes, Damaris Kirsch Pinheiro, Hassan Bencherif, Gabriela Dornelles Bittencourt, Lucas Vaz Peres, Jean-Maurice Cadet, Thierry Portafaix, and Nathalie Tissot Boiaski
EGUsphere, https://doi.org/10.5194/egusphere-2023-1474, https://doi.org/10.5194/egusphere-2023-1474, 2023
Preprint archived
Short summary
Short summary
This is a study of the climatology and behavior of UV radiation on the surface during events of secondary effects of the Antarctic ozone hole over south of Brazil. Considering all implications of excess exposure to UV radiation on the surface on human health it is important to know how much radiation the population is being exposed to during those events. Results showed that for each 1 % decrease in the ozone total column, the UV index tends to increase by 4 % in the region of study.
Gabriela Dornelles Bittencourt, Damaris Kirsch Pinheiro, Hassan Bencherif, Lucas Vaz Peres, Nelson Begue, José Valentin Bageston, Douglas Lima de Bem, Vagner Anabor, and Luiz Angelo Steffenel
EGUsphere, https://doi.org/10.5194/egusphere-2023-1471, https://doi.org/10.5194/egusphere-2023-1471, 2023
Preprint archived
Short summary
Short summary
The study examines ozone depletions at mid-latitudes in Brazil during austral spring Antarctic Ozone Hole influence events. The methodology applied used data from the total column ozone, vertical profile of the atmosphere, and reanalysis data to analyze the atmospheric dynamics. The main motivation of this work is to show how this important trace gas dynamically behaves in the atmosphere in the active period of the Antarctic Ozone Hole in regions of medium latitudes.
Gabriela Dornelles Bittencourt, Damaris Kirsch Pinheiro, Hassan Bencherif, Nelson Begue, Lucas Vaz Peres, José Valentin Bageston, Francisco Reimundo da Silva, and Douglas Lima de Bem
EGUsphere, https://doi.org/10.5194/egusphere-2023-1664, https://doi.org/10.5194/egusphere-2023-1664, 2023
Short summary
Short summary
The study examines the behavior of ozone at equatorial and subtropical latitudes in South America, in a multi-instrumental analysis. The methodology applied used ozonesondes (SHADOZ/NASA) and satellite data (TIMED/SABER), in addition analysis with ground-based and satellites instruments, allowing a more in-depth study at both latitudes. The main motivation is to understand how latitudinal differences in the observation of ozone content can interfere with the behavior of this trace gas.
Olivier Delage, Thierry Portafaix, Hassan Bencherif, Alain Bourdier, and Emma Lagracie
Nonlin. Processes Geophys., 29, 265–277, https://doi.org/10.5194/npg-29-265-2022, https://doi.org/10.5194/npg-29-265-2022, 2022
Short summary
Short summary
The complexity of geophysics systems results in time series with fluctuations at all timescales. The analysis of their variability then consists in decomposing them into a set of basis signals. We developed here a new adaptive filtering method called empirical adaptive wavelet decomposition that optimizes the empirical-mode decomposition existing technique, overcoming its drawbacks using the rigour of wavelets as defined in the recently published empirical wavelet transform method.
Erika Brattich, Hongyu Liu, Bo Zhang, Miguel Ángel Hernández-Ceballos, Jussi Paatero, Darko Sarvan, Vladimir Djurdjevic, Laura Tositti, and Jelena Ajtić
Atmos. Chem. Phys., 21, 17927–17951, https://doi.org/10.5194/acp-21-17927-2021, https://doi.org/10.5194/acp-21-17927-2021, 2021
Short summary
Short summary
In this study we analyse the output of a chemistry and transport model together with observations of different meteorological and compositional variables to demonstrate the link between sudden stratospheric warming and transport of stratospheric air to the surface in the subpolar regions of Europe during the cold season. Our findings have particular implications for atmospheric composition since climate projections indicate more frequent sudden stratospheric warming under a warmer climate.
Nelson Bègue, Lerato Shikwambana, Hassan Bencherif, Juan Pallotta, Venkataraman Sivakumar, Elian Wolfram, Nkanyiso Mbatha, Facundo Orte, David Jean Du Preez, Marion Ranaivombola, Stuart Piketh, and Paola Formenti
Ann. Geophys., 38, 395–420, https://doi.org/10.5194/angeo-38-395-2020, https://doi.org/10.5194/angeo-38-395-2020, 2020
Short summary
Short summary
This study investigates the influence of the 2015 Calbuco eruption (41.2°S, 72.4°W; Chile) on the total columnar aerosol optical properties in the Southern Hemisphere. The well-known technique of sun photometry was applied to the investigation of the transport and the spatio-temporal evolution of the optical properties of the volcanic plume. The CIMEL sun photometer measurements performed over six South American and three African sites were statistically analyzed.
Gabriela Dornelles Bittencourt, Damaris Kirsch Pinheiro, José Valentin Bageston, Hassan Bencherif, Luis Angelo Steffenel, and Lucas Vaz Peres
Ann. Geophys., 37, 1049–1061, https://doi.org/10.5194/angeo-37-1049-2019, https://doi.org/10.5194/angeo-37-1049-2019, 2019
Short summary
Short summary
The Antarctic ozone hole (AOH) directly influences the Antarctic region, where its levels can reach values below 220 DU. The temporary depletion of ozone in Antarctica generally occurs between the beginning and middle of August, during the austral spring, and extends to November, when a temporary reduction in ozone content is observed in a large region over Antarctica. However, masses of ozone-depleted air can break away from the ozone hole and reach mid-latitude regions.
Corinna Kloss, Gwenaël Berthet, Pasquale Sellitto, Felix Ploeger, Silvia Bucci, Sergey Khaykin, Fabrice Jégou, Ghassan Taha, Larry W. Thomason, Brice Barret, Eric Le Flochmoen, Marc von Hobe, Adriana Bossolasco, Nelson Bègue, and Bernard Legras
Atmos. Chem. Phys., 19, 13547–13567, https://doi.org/10.5194/acp-19-13547-2019, https://doi.org/10.5194/acp-19-13547-2019, 2019
Short summary
Short summary
With satellite measurements and transport models, we show that a plume resulting from strong Canadian fires in July/August 2017 was not only distributed throughout the northern/higher latitudes, but also reached the faraway tropics, aided by the circulation of Asian monsoon anticyclone. The regional climate impact in the wider Asian monsoon area in September exceeds the impact of the Asian tropopause aerosol layer by a factor of ~ 3 and compares to that of an advected moderate volcanic eruption.
Kévin Lamy, Thierry Portafaix, Béatrice Josse, Colette Brogniez, Sophie Godin-Beekmann, Hassan Bencherif, Laura Revell, Hideharu Akiyoshi, Slimane Bekki, Michaela I. Hegglin, Patrick Jöckel, Oliver Kirner, Ben Liley, Virginie Marecal, Olaf Morgenstern, Andrea Stenke, Guang Zeng, N. Luke Abraham, Alexander T. Archibald, Neil Butchart, Martyn P. Chipperfield, Glauco Di Genova, Makoto Deushi, Sandip S. Dhomse, Rong-Ming Hu, Douglas Kinnison, Michael Kotkamp, Richard McKenzie, Martine Michou, Fiona M. O'Connor, Luke D. Oman, Giovanni Pitari, David A. Plummer, John A. Pyle, Eugene Rozanov, David Saint-Martin, Kengo Sudo, Taichu Y. Tanaka, Daniele Visioni, and Kohei Yoshida
Atmos. Chem. Phys., 19, 10087–10110, https://doi.org/10.5194/acp-19-10087-2019, https://doi.org/10.5194/acp-19-10087-2019, 2019
Short summary
Short summary
In this study, we simulate the ultraviolet radiation evolution during the 21st century on Earth's surface using the output from several numerical models which participated in the Chemistry-Climate Model Initiative. We present four possible futures which depend on greenhouse gases emissions. The role of ozone-depleting substances, greenhouse gases and aerosols are investigated. Our results emphasize the important role of aerosols for future ultraviolet radiation in the Northern Hemisphere.
Pablo Facundo Orte, Elian Wolfram, Jacobo Salvador, Akira Mizuno, Nelson Bègue, Hassan Bencherif, Juan Lucas Bali, Raúl D'Elia, Andrea Pazmiño, Sophie Godin-Beekmann, Hirofumi Ohyama, and Jonathan Quiroga
Ann. Geophys., 37, 613–629, https://doi.org/10.5194/angeo-37-613-2019, https://doi.org/10.5194/angeo-37-613-2019, 2019
Short summary
Short summary
We analysed an event of short-term ozone variability due to the passage of the polar vortex over Río Gallegos (southern Argentina) with the aim of highlighting the capability of a millimetre-wave radiometer to observe ozone in the stratosphere and the low mesosphere with a high temporal resolution. It is particularly important in this subpolar region due to the high variation that this gas can suffer as a consequence of the passage of the polar vortex and the ozone hole during spring.
Abdoulwahab Mohamed Toihir, Thierry Portafaix, Venkataraman Sivakumar, Hassan Bencherif, Andréa Pazmiño, and Nelson Bègue
Ann. Geophys., 36, 381–404, https://doi.org/10.5194/angeo-36-381-2018, https://doi.org/10.5194/angeo-36-381-2018, 2018
Gabriela Dornelles Bittencourt, Caroline Bresciani, Damaris Kirsch Pinheiro, José Valentin Bageston, Nelson Jorge Schuch, Hassan Bencherif, Neusa Paes Leme, and Lucas Vaz Peres
Ann. Geophys., 36, 415–424, https://doi.org/10.5194/angeo-36-415-2018, https://doi.org/10.5194/angeo-36-415-2018, 2018
Short summary
Short summary
Ozone-poor air mass can be released and leave through the Antarctic ozone hole, thus reaching midlatitude regions. The objective of this study is to show how tropospheric and stratospheric dynamics behaved during the event. The ozone-poor air mass began to operate in the region on 20 October 2016. A reduction of ozone content of approximately 23 % was observed in relation to the climatology average. The advance of the ozone-poor air mass caused intense reductions in total ozone content.
Caroline Bresciani, Gabriela Dornelles Bittencourt, José Valentin Bageston, Damaris Kirsch Pinheiro, Nelson Jorge Schuch, Hassan Bencherif, Neusa Paes Leme, and Lucas Vaz Peres
Ann. Geophys., 36, 405–413, https://doi.org/10.5194/angeo-36-405-2018, https://doi.org/10.5194/angeo-36-405-2018, 2018
Short summary
Short summary
This paper investigates the passage of the ozone secondary effect (OSE) over southern Brazil and Uruguay in October 2016 by using multi-instrumental data, i.e. ozonesonde, satellites and ground-based instruments, and the large OSE influence on the ozone concentration and on the temperature was shown.
Mateus S. Venturini, José V. Bageston, Nattan R. Caetano, Lucas V. Peres, Hassan Bencherif, and Nelson J. Schuch
Ann. Geophys., 36, 301–310, https://doi.org/10.5194/angeo-36-301-2018, https://doi.org/10.5194/angeo-36-301-2018, 2018
Short summary
Short summary
In the past years, the study of the temperature trend and its variability in the upper atmosphere has increased. However, most works were conducted in regions of medium and high latitude. Therefore, we aim to analyze a low-latitude region, the south of Brazil and surrounding areas. Using data from the TIMED/SABER instrument and applying the Trend-Run model for temperature trend analyses, no substantial temperature trend was found in the MLT region (80–100 km) from the years 2003 to 2014.
Kévin Lamy, Thierry Portafaix, Colette Brogniez, Sophie Godin-Beekmann, Hassan Bencherif, Béatrice Morel, Andrea Pazmino, Jean Marc Metzger, Frédérique Auriol, Christine Deroo, Valentin Duflot, Philippe Goloub, and Charles N. Long
Atmos. Chem. Phys., 18, 227–246, https://doi.org/10.5194/acp-18-227-2018, https://doi.org/10.5194/acp-18-227-2018, 2018
Short summary
Short summary
This work focuses on solar radiation in the tropics, more specifically on ultraviolet radiation. From ground-based and satellite observations of the chemical state of the atmosphere, we were able to model the ultraviolet measurements measured in the southern tropics with a very small error. This is a first step to modelling and predicting future ultraviolet levels in the tropics from chemistry-climate projections.
Nelson Bègue, Damien Vignelles, Gwenaël Berthet, Thierry Portafaix, Guillaume Payen, Fabrice Jégou, Hassan Benchérif, Julien Jumelet, Jean-Paul Vernier, Thibaut Lurton, Jean-Baptiste Renard, Lieven Clarisse, Vincent Duverger, Françoise Posny, Jean-Marc Metzger, and Sophie Godin-Beekmann
Atmos. Chem. Phys., 17, 15019–15036, https://doi.org/10.5194/acp-17-15019-2017, https://doi.org/10.5194/acp-17-15019-2017, 2017
Short summary
Short summary
The space–time evolutions of the Calbuco plume are investigated by combining satellite, in situ aerosol counting and lidar observations, and a numerical model. All the data at Reunion Island reveal a twofold increase in the amount of aerosol with respect to the values observed before the eruption. The dynamic context has favored the spread of the plume exclusively in the Southern Hemisphere. This study highlights the role played by dynamical barriers in the transport of atmospheric species.
Nelson Bègue, Nkanyiso Mbatha, Hassan Bencherif, René Tato Loua, Venkataraman Sivakumar, and Thierry Leblanc
Ann. Geophys., 35, 1177–1194, https://doi.org/10.5194/angeo-35-1177-2017, https://doi.org/10.5194/angeo-35-1177-2017, 2017
Short summary
Short summary
In this investigation a statistical analysis of the characteristics of mesospheric inversion layers (MILs) over tropical regions is presented. This study involves the analysis of 16 years of lidar observations recorded at Reunion (20.8° S, 55.5° E) and 21 years of lidar observations recorded at Mauna Loa (19.5° N, 155.6° W) together with SABER observations at these two locations. Results presented in this study confirm that SAO contributes to the formation of MILs over the tropical region.
Gwenaël Berthet, Fabrice Jégou, Valéry Catoire, Gisèle Krysztofiak, Jean-Baptiste Renard, Adam E. Bourassa, Doug A. Degenstein, Colette Brogniez, Marcel Dorf, Sebastian Kreycy, Klaus Pfeilsticker, Bodo Werner, Franck Lefèvre, Tjarda J. Roberts, Thibaut Lurton, Damien Vignelles, Nelson Bègue, Quentin Bourgeois, Daniel Daugeron, Michel Chartier, Claude Robert, Bertrand Gaubicher, and Christophe Guimbaud
Atmos. Chem. Phys., 17, 2229–2253, https://doi.org/10.5194/acp-17-2229-2017, https://doi.org/10.5194/acp-17-2229-2017, 2017
Short summary
Short summary
Since the last major volcanic event, i.e. the Pinatubo eruption in 1991, only
moderateeruptions have regularly injected sulfur into the stratosphere, typically enhancing the aerosol loading for several months. We investigate here for the first time the chemical perturbation associated with the Sarychev eruption in June 2009, using balloon-borne instruments and model calculations. Some chemical compounds are significantly affected by the aerosols, but the impact on stratospheric ozone is weak.
Lucas Vaz Peres, Hassan Bencherif, Nkanyiso Mbatha, André Passaglia Schuch, Abdoulwahab Mohamed Toihir, Nelson Bègue, Thierry Portafaix, Vagner Anabor, Damaris Kirsch Pinheiro, Neusa Maria Paes Leme, José Valentin Bageston, and Nelson Jorge Schuch
Ann. Geophys., 35, 25–37, https://doi.org/10.5194/angeo-35-25-2017, https://doi.org/10.5194/angeo-35-25-2017, 2017
Short summary
Short summary
In this paper, we analyze the total ozone column over the Southern Space Observatory, Brazil, between 1992 and 2014 by Brewer spectrometer and TOMS and OMI satellite instruments, finding good agreement between the two. In addition, the seasonal TOC variation is dominated by an annual cycle, and the Quasi-Biennial Oscillation modulation was the main mode of interannual variability and in opposite phase to the total ozone column anomaly time series.
A. M. Toihir, H. Bencherif, V. Sivakumar, L. El Amraoui, T. Portafaix, and N. Mbatha
Ann. Geophys., 33, 1135–1146, https://doi.org/10.5194/angeo-33-1135-2015, https://doi.org/10.5194/angeo-33-1135-2015, 2015
N. Bègue, P. Tulet, J. Pelon, B. Aouizerats, A. Berger, and A. Schwarzenboeck
Atmos. Chem. Phys., 15, 3497–3516, https://doi.org/10.5194/acp-15-3497-2015, https://doi.org/10.5194/acp-15-3497-2015, 2015
N. Mbatha, V. Sivakumar, H. Bencherif, and S. Malinga
Ann. Geophys., 31, 1709–1719, https://doi.org/10.5194/angeo-31-1709-2013, https://doi.org/10.5194/angeo-31-1709-2013, 2013
Related subject area
Subject: Terrestrial atmosphere and its relation to the sun | Keywords: Atmospheric ozone
Investigation of the behavior of the atmospheric dynamics during occurrences of the ozone hole's secondary effect in southern Brazil
Analysis of a southern sub-polar short-term ozone variation event using a millimetre-wave radiometer
Case study of ozone anomalies over northern Russia in the 2015/2016 winter: measurements and numerical modelling
Strong downdrafts preceding rapid tropopause ascent and their potential to identify cross-tropopause stratospheric intrusions
Gabriela Dornelles Bittencourt, Damaris Kirsch Pinheiro, José Valentin Bageston, Hassan Bencherif, Luis Angelo Steffenel, and Lucas Vaz Peres
Ann. Geophys., 37, 1049–1061, https://doi.org/10.5194/angeo-37-1049-2019, https://doi.org/10.5194/angeo-37-1049-2019, 2019
Short summary
Short summary
The Antarctic ozone hole (AOH) directly influences the Antarctic region, where its levels can reach values below 220 DU. The temporary depletion of ozone in Antarctica generally occurs between the beginning and middle of August, during the austral spring, and extends to November, when a temporary reduction in ozone content is observed in a large region over Antarctica. However, masses of ozone-depleted air can break away from the ozone hole and reach mid-latitude regions.
Pablo Facundo Orte, Elian Wolfram, Jacobo Salvador, Akira Mizuno, Nelson Bègue, Hassan Bencherif, Juan Lucas Bali, Raúl D'Elia, Andrea Pazmiño, Sophie Godin-Beekmann, Hirofumi Ohyama, and Jonathan Quiroga
Ann. Geophys., 37, 613–629, https://doi.org/10.5194/angeo-37-613-2019, https://doi.org/10.5194/angeo-37-613-2019, 2019
Short summary
Short summary
We analysed an event of short-term ozone variability due to the passage of the polar vortex over Río Gallegos (southern Argentina) with the aim of highlighting the capability of a millimetre-wave radiometer to observe ozone in the stratosphere and the low mesosphere with a high temporal resolution. It is particularly important in this subpolar region due to the high variation that this gas can suffer as a consequence of the passage of the polar vortex and the ozone hole during spring.
Yury M. Timofeyev, Sergei P. Smyshlyaev, Yana A. Virolainen, Alexander S. Garkusha, Alexander V. Polyakov, Maxim A. Motsakov, and Ole Kirner
Ann. Geophys., 36, 1495–1505, https://doi.org/10.5194/angeo-36-1495-2018, https://doi.org/10.5194/angeo-36-1495-2018, 2018
Short summary
Short summary
Atmospheric ozone plays a vital role, absorbing the ultraviolet solar radiation and heating the air, thus forming the stratosphere itself. If not absorbed, UV radiation would reach Earth's surface in amounts that are harmful to a variety of lifeforms. Climate change may lead to increasing ozone depletion, especially in the Arctic. Observation and prediction of the ozone variability are crucial for the investigation of its nature and the prediction of potential increase in surface UV radiation.
Feilong Chen, Gang Chen, Chunhua Shi, Yufang Tian, Shaodong Zhang, and Kaiming Huang
Ann. Geophys., 36, 1403–1417, https://doi.org/10.5194/angeo-36-1403-2018, https://doi.org/10.5194/angeo-36-1403-2018, 2018
Short summary
Short summary
Downward stratospheric intrusions are well known as an important source of tropospheric ozone. In the light of the present understanding, several unanswered questions remain regarding the use of VHF radars to identify stratospheric intrusions. Our study found that the radar-observed strong downdrafts preceding the rapid tropopause ascent are a strong diagnostic for possible intrusions. This will have important implications for air-quality monitoring and long-term estimation of troposphere ozone.
Cited articles
Abarca, J. F., Casiccia, C. C., and Zamorano, F. D.: Increase in sunburns and
photosensitivity disorders at the edge of the Antarctic ozone hole, Southern
Chile 1986–2000, J. Am. Acad. Dermatol., 46, 193–199,
https://doi.org/10.1067/mjd.2002.118556, 2002.
Ajtić, J., Connor, B. J., Lawrence, B. N., Bodeker, G. E., Hoppel, K. W.,
Rosenfield, J. E., and Heuff, D. N.: Dilution of the Antarctic ozone hole
into the southern midlatitudes, J. Geophys. Res., 109, D17107,
https://doi.org/10.1029/2003JD004500, 2004.
Bais, A. F., Mckenzie, R. L., Bernhard, G., Aucamp, P. J., llysa, M.,
Madronich, S., and Tourpali, K.: Ozone depletion and climate change: Impacts
on UV radiation, Photochem. Photobiol. Sci., 14, 19–52,
https://doi.org/10.1039/c4pp90032d, 2015.
Balis, D., Kroon, M., Koukouli, M. E., Brinksma, E. J., Labow, G., Veefkind,
J. P., and McPeters, R. D.: Validation of Ozone Monitoring Instrument total
ozone column measurements using Brewer and Dobson spectrophotometer
ground-based observations, J. Geophys. Res., 112, D24S46,
https://doi.org/10.1029/2007JD008796, 2007.
Bandoro, J., Solomon, S., Donohoe, A., Thompson, D. W., and Santer, B. D.:
Influences of the Antarctic Ozone Hole on Southern Hemispheric Summer Climate
Change, J. Clim., 27, 6245–6264, https://doi.org/10.1175/JCLI-D-13-00698.1, 2014.
Barsby, J. and Diab, R. D.: Total ozone and synoptic weather relationships
over southern Africa and surrounding oceans, J. Geophys. Res., 100,
3023–3032, https://doi.org/10.1029/94JD01987, 1995.
Bencherif, H., Portafaix, T., Baray, J. L., Morel, B., Baldy, S., Leveau, J.,
Hauchecorne, A., Keckhut, K., Moorgawa, A., Michaelis, M. M., and Diab, R.:
LIDAR observations of lower stratospheric aerosols over South Africa linked
to large scale transport across the southern subtropical barrier, J. Atmos.
Sol.-Terr. Phy., 65, 707–715, 2003.
Bencherif, H., Amraoui, L. E., Semane, N., Massart, S., Vidyaranya Charyulu,
D., Hauchecorne, A., and Peuch, V.: Examination of the 2002 major warming in
the southen hemisphere using ground-based and Odin/SMR assimilated data:
Stratospheric ozone distributions and tropic/mid-latitude exchange, Can. J.
Phys., 85, 1287–1300, https://doi.org/10.1139/P07-143, 2007.
Bencherif, H., El Amraoui, L., Kirgis, G., Leclair De Bellevue, J.,
Hauchecorne, A., Mzé, N., Portafaix, T., Pazmino, A., and Goutail, F.:
Analysis of a rapid increase of stratospheric ozone during late austral
summer 2008 over Kerguelen (49.4∘ S, 70.3∘ E), Atmos. Chem.
Phys., 11, 363–373, https://doi.org/10.5194/acp-11-363-2011, 2011.
Bhartia, P. K.: OMI/Aura Ozone (O3) Total Column Daily L2 Global
Gridded 0.25∘ × 0.25∘ V3, , Goddard Earth Sciences
Data and Information Services Center (GES DISC),
https://doi.org/10.5067/Aura/OMI/DATA2025 (last access: 15 April 2017), 2012.
Bodeker, G.E. and McKenzie, R. L.: An algorithm for inferring surface UV
irradiance including cloud effects, J. Appl. Meteor., 35, 1860–1877, 1996.
Bodeker, G. E. and Scourfield, M. W.: Estimated past and future variability
in UV radiation in South Africa based on trends in total ozone, S. Afr. J.
Sci., 94, 24–32, 1998.
Bodeker, G. E., Struthers, H., and Connor, B. J.: Dynamical containment of
Antarctic ozone depletion, Geophys. Res. Lett., 29, 7 pp.,
https://doi.org/10.1029/2001GL014206, 2002.
Booth, C. R. and Madronich, S.: Radiation Amplification Factors: Improved
formulation accounts for large increases in ultraviolet radiation associated
with Antarctic ozone depletion, in: Ultraviolet Radiation in Antarctica:
Measurements and Biological Effects, 62, Washington, D. C., American
Geophysical Union, https://doi.org/10.1029/AR062p0039, 1994.
Brönnimann, S., Jacques-Coper, M., Rozanov, E., Fischer, A. M.,
Morgenstern, O., Zeng, G., Akiyoshi, H., and Yamashita, Y.: Tropical
circulation and precipitation response to ozone depletion and recovery,
Environ. Res. Lett., 12, 064011, https://doi.org/10.1088/1748-9326/aa7416, 2017.
Cadet, J.-M., Benchrif, H., Portafaix, T., Lamy, K., Ncongwane, K., Coetzee,
G. J., and Wright, C. Y.: Comparison of Ground-Based and Satellite-Derived
Solar UV Index Levels at Six South African Sites, Int. J. Env. Res. Pub.
He., 14, 1384, https://doi.org/10.3390/ijerph14111384, 2017.
Charney, J. G. and Drazin, P. G.: Propagation of planetary-scale distrubances
from the lower into the upper atmosphere, J. Geophys Res., 66, 83–109,
1961.
Climate Prediction Center Internet Team: Cold and warm episodes by season,
http://www.cpc.ncep.noaa.gov/products/analysis_monitoring/ensostuff/ensoyears.shtml,
last access: 30 August 2017.
de Laat, A., van der A, R. J., Allaart, M. F., van Weele, M., Benitez, G. C.,
Casiccia, C., Paes Leme, N. M., Quel, E., Salvador, J., and Wolfram, E.:
Extreme sunbathing: Three weeks of small total O3 columns and high UV
radiation over the southern tip of South America during the 2009 Antartci O3
hole season, Geophys. Res. Lett., 37, L14805, https://doi.org/10.1029/2010GL043699,
2010.
Diab, R., Barsby, J., Bodeker, G., Scourfield, M., and Salter, L.: Satellite
observations of total ozone above South Africa, S. Afr. Geogr. J., 74,
13–18, 1992.
Diffey, B. L.: Sources and measurement of ultraviolet radiation, Methods,
28, 4–13, 2002.
Fahey, D. W. and Hegglin, M. L.: Twenty Questions and Answers About the Ozone
Layer: 2010 Update, in: Scientific Assesment of Ozone depletion: 2010,
Geneva: World Meteorological Organisation, 2011.
Farman, J. C., Gardinier, B. G., and Shanklin, J. D.: Large losses of total
ozone in Antarctica reveal seasonal CIO/NO interaction, Nature, 315
207–209, 1985.
Gies, P., Klekociuk, A., Tully, M., Henderson, S., Javorniczky, J., King, K.,
Lemus-Deschamps, L., and Makin, J.: Low ozone over southern Australia in
August 2011 and its imapct on solar ultraviolet radiation levels, Photochem.
Photobiol., 89, 984–994, 2013.
Guarnieri, R. A., Padilha, L. F., Guarnieri, F. L., Echer, E., Makita, K.,
Pinheiro, D. K., Schuch, A. M. P., Boeira, L. S., and Schuch, N. J.: A study
of the anticorrelations between ozone and UV-B radiation using linear and
exponential fits in southern Brazil, Adv. Space Res., 34, 764–768, 2004.
Hauchecorne, A., Godin, S., Marchand, M., Hesse, B., and Souprayen, C.:
Quantification of the transport of chemical constituents from the polar
vortex to midlatitudes in the lower stratosphere using the high-resolution
advection model MIMOSA and effective diffusivity, J. Geophys. Res., 107,
D208289, https://doi.org/10.1029/2001JD000491, 2002.
Hazarika, N.: Correlation and Data Transformations, availibe at:
https://blog.majestic.com/case-studies/correlation-data-transformations/
(last access: 30 August 2018), 2013.
Herman, J. R. and McKenzie, R. L.: Ultraviolet radiation at the Earth's
surface, in: Scientific Assesment of ozone depletion: 1998, World
Meteorological Organisation, 1998.
Holton, J. R. and Hakim, G. J. (Fith Eds.): Circulation, Vorticity and
potential vorticity, in: An Introduction to dynamic meteorology Oxford,
Academic Press, 2013.
Huang, G., Liu, X., Chance, K., Yang, K., and Cai, Z.: Validation of 10-year
SAO OMI ozone profile (PROFOZ) product using Aura MLS measurements, Atmos.
Meas. Tech., 11, 17–32, https://doi.org/10.5194/amt-11-17-2018, 2018.
Jiang, Y. B., Froidevaux, L., Lambert, A., Livesey, N. J., Read, W. G.,
Waters, J. W., Bojkov, B., Leblanc, T., McDermid, I. S., Godin-Beekmann, S.,
Filipiak, M. J., Harwood, R. S., Fuller, R. A., Daffer, W. H., Drouin, B. J.,
Cofield, R. E., Cuddy, D. T., Jarnot, R. F., Knosp, B. W., Perun, V. S.,
Schwartz, M. J., Snyder, W. V., Stek, P. C., Thurstans, R. P., Wagner, P. A.,
Allaart, M., Andersen, S. B., Bodeker, G., Calpini, B., Claude, H., Coetzee,
G.,Davies, J., De Backer, H., Dier, H., Fujiwara, M., Johnson, B., Kelder,
H., Leme, N. P., König-Langlo, G., Kyro, E., Laneve, G., Fook, L. S.,
Merrill, J., Morris, G., Newchurch, M., Oltmans, S., Parrondos, M. C., Posny,
F., Schmidlin, F., Skrivankova, P., Stubi, R., Tarasick, D., Thompson, A.,
Thouret, V., Viatte, P., Vömel, H., von Der Gathen, P., Yela, M., and
Zablocki, G.: Validation of Aura Microwave Limb Sounder Ozone by ozonesonde
and lidar measurements, J. Geophys. Res., 112, D24S34,
https://doi.org/10.1029/2007JD008776, 2007.
Kalicharran, S., Diab, R. D., and Sokolic, F.: Trends in total ozone over
southern African stations between 1979 and 1991, Geophys. Res. Lett., 20,
2877–2880, https://doi.org/10.1029/93GL03427, 1993.
Kuttippurath, J., Lefèvre, F., Pommereau, J.-P., Roscoe, H. K., Goutail,
F., Pazmiño, A., and Shanklin, J. D.: Antarctic ozone loss in 1979–2010:
first sign of ozone recovery, Atmos. Chem. Phys., 13, 1625–1635,
https://doi.org/10.5194/acp-13-1625-2013, 2013.
Kuttippurath, J., Godin-Beekmann, S., Lefèvre, F., Santee, M. L.,
Froidevaux, L., and Hauchecorne, A.: Variability in Antarctic ozone loss in
the last decade (2004–2013): high-resolution simulations compared to Aura
MLS observations, Atmos. Chem. Phys., 15, 10385–10397,
https://doi.org/10.5194/acp-15-10385-2015, 2015.
Lefèvre, F., Brasseur, G. P., Folkins, I., Smith, A. K., and Simon, P:
Chemistry of the 199–1992 stratospheric winter: three-dimensional model
simulations, J. Geophys. Res., 99, 8183–8195, 1994.
Leovy, C. B., Sun, C. R., Hitchman, M. H., Remsberg, E. E., Russel, J. M.,
Gordley, L. L., and Lyiak, L. V.: Transport of ozone in the middle
stratosphere: evidence for planetary wave breaking, J. Atmos. Sci., 42,
230–244, 1985.
Levelt, P. F., Hilsenrath, E., Leppelmeier, G. W., van den Oord, G. H.,
Bhartia, P. K., Tamminen, J., and Veefkind, J. P.: Science Objectives of the
ozone monitoring instrument, IEEE T. Geosci. Remote Sens., 44, 1199–1208,
https://doi.org/10.1109/TGRS.2006.872336, 2006.
Livesey, N. J., Read, W. G., Wagner, P. A., Froidevaux, L., Lambert, A.,
Manney, G. L., Millan, L. F., Pumphrey, H. C., Santee, M. L., Schwartz, M.
J., Wang, S., Fuller, R. A., Jarnot, R. F., Knosp, B. W., and Martinez, E.:
The earth observing system (EOS) Aura microwave limb sounder (MLS) Version
4.2xlevel 2 data quality and description document, available at:
https://mls.jpl.nasa.gov/data/v4-2_data_quality_document.pdf, last
access: 8 May 2017.
Lucas, R. M. and Ponsonby, A.-L.: Ultraviolet radiation and health: friend
and foe, Med. J. Australia, 11, 594–598, 2002.
Marchand, M. S., Godin, A., Hauchecorne, A., Lefèvre, F., Bekki, S., and
Chipperfield, M.: Influence of polar ozone loss on northern midlatitude
regions estimated by a high-resolution chemistry transport model during
winter 1999/2000, J. Geophys. Res., 108, https://doi.org/10.1029/2001JD000906, 2003.
Massen, F.: Computing the Radiation Amplification Factor RAF using a sudden
dip in Total Ozone Column measured at Diekirch, Luxembourg,
https://doi.org/10.13140/RG.2.1.2911.0644, 2013.
McKenzie, R., Connor, B., and Bodeker, G.: Increased summertime UV radiation
in New Zealand in response to ozone loss, Science, 285, 1709–1711, 1999.
McKenzie, R. L., Matthews, W. A., and Johnston, P. V.: The relationship
between Erythemal UV and ozone derived from spectral irradiance measurements,
Geophys. Res. Lett., 18, 2269–2272, https://doi.org/10.1029/91GL02786, 1991.
McKenzie, R. L., Bodeker, G. E., Keep, D. J., and Kotkamp, M.: UV Radiation
in New Zealand: North-to-South differences between two sites, and
relationship to other latitudes, Weath. Clim., 16, 17–26, 1996.
McPeters, R. D., Frith, S., and Labow, G. J.: OMI total column ozone:
extending the long-term data record, Atmos. Meas. Tech., 8, 4845–4850,
https://doi.org/10.5194/amt-8-4845-2015, 2015.
Paul, J., Fortuin, F., and Kelder, H.: An ozone climatology based on
ozonesonde and satellite measurements, J. Geophys. Res., 103, 709–734,
https://doi.org/10.1029/1998JD200008, 1998.
Portafaix, T., Morel, B., Bencherif, H., and Baldy, S.: Fine-scale study of a
thick stratospheric ozone lamina at the edge of the southern subtropical
barrier, J. Geophys. Res., 108, D64196, https://doi.org/10.1029/2002JD002741, 2003.
Reda, I. and Andreas, A.: NREL's Solar Position Algorithm (SPA), availible
at: https://www.nrel.gov/midc/spa/ (last access: 15 August 2017), 2008.
Schuch, A. P., dos Santos, M. B., Lipinski, V. M., Vaz Peres, L., dos Santos,
C. P., Cechin, S. Z., Schuch, N. J., Pinheiro, D. K., and da Silva Loreto, E.
L.: Identification o finfluential eventsconcerning the Antarctic ozone hole
over southern Brazil and the biological effects induced by UVB and UVA
radiation in an endemic treefrog species, Ecotox. Environ. Safety, 118,
190–198, https://doi.org/10.1016/j.ecoenv.2015.04.029, 2015.
Schwartz, M., Froidevaux, L., Livesey, N., and Read, W.: MLS/Aura Level 2
Ozone (O3) Mixing Ratio V004, Greenbelt, MD, USA, Goddard Earth Sciences Data
and Information Services Center (GES DISC), https://doi.org/10.5067/Aura/MLS/DATA2017
(last access: 8 May 2017), 2015.
Seckmeyer, G., Bais, A., Bernhard, G., Blumthaler, M., Booth, C. R., Lantz,
K., and Webb, A.: A Instruments to MeasureSolar Ultraviolet Radiation. Part 2: Broadband Instruments Measuring Erythemally Weighted Solar Irradiance, Geneva, Switzerland, World Meteorological Organization (WMO),
2005.
Semane, N., Bencherif, H., Morel, B., Hauchecorne, A., and Diab, R. D.: An
unusual stratospheric ozone decrease in the Southern Hemisphere subtropics
linked to isentropic air-mass transport as observed over Irene
(25.5∘ S, 28.1∘ E) in mid-May 2002, Atmos. Chem. Phys., 6,
1927–1936, https://doi.org/10.5194/acp-6-1927-2006, 2006.
Serrano, A., Antón, M., Cancillo, M. L., and García, J. A.: Proposal
of a new erythemal UV radiation amplification factor, Atmos. Chem. Phys.
Discuss., 8, 1089–1111, https://doi.org/10.5194/acpd-8-1089-2008, 2008.
Sivakumar, V. and Ogunniyi, J.: Ozone climatology and variablity over Irene,
South Africa detrermined by ground based and satellite observations. Part 1:
Vertical variations in the troposphere and stratopshere, Atmosfera, 30,
337–353, 2017.
Slemr, F., Brunke, E. G., Labuschagne, C., and Ebinghaus, R.: Total gaseous
mercury concentrations at the Cape Point GAW station and their seasonality,
Geophys. Res. Lett., 35, L11807, https://doi.org/10.1029/2008GL033741, 2008.
Solarlight: Model 501 UVB Radiometer, availible at:
http://solarlight.com/wp-content/uploads/2015/01/Meters_Model-501-.pdf
(last access: 3 September 2016), 2014.
Tripathi, O. P., Godin-Beekmann, S., Lefévre, F., Pazmiño, A.,
Hauchecorne, A., Chipperfield, M., Feng, W., Millard, G., Rex, M., Streibel,
M., and Von der Gathen, P.: Comparison of polar ozone loss rates simulated by
one-dimensional and three-dimensional models with match observations in
recent Antarctic and Arctic winters, J. Geophys. Res., 112, D12307,
https://doi.org/10.1029/2006JD008370, 2007.
WMO: Scientific Asessment of Ozone Depletion: 2010, Global Ozone Research and
Monitoring Project- Report No52, Geneva, Switzerland, 2011.
WHO: Ultraviolet radiation and the INTERSUN Programme:
http://www.who.int/uv/uv_and_health/en/, last access: 25 January 2017.
Wolfram, E. A., Salvador, J., Orte, F., D'Elia, R., Godin-Beekmann, S.,
Kuttippurath, J., Pazmiño, A., Goutail, F., Casiccia, C., Zamorano, F.,
Paes Leme, N., and Quel, E. J.: The unusual persistence of an ozone hole over
a southern mid-latitude station during the Antarctic spring 2009: a
multi-instrument study, Ann. Geophys., 30, 1435–1449,
https://doi.org/10.5194/angeo-30-1435-2012, 2012.
Wright, C. Y., Coetzee, G., and Ncongwane, K.: Ambient solar UV radiation and
seasonal trends in potential sunburn risk among schoolchilren in South
Africa, S. Afr. J. Child Health, 5, 33–38, 2011.
Zempila, M.-M., van Geffen, J. H. G. M., Taylor, M., Fountoulakis, I.,
Koukouli, M.-E., van Weele, M., van der A, R. J., Bais, A., Meleti, C., and
Balis, D.: TEMIS UV product validation using NILU-UV ground-based
measurements in Thessaloniki, Greece, Atmos. Chem. Phys., 17, 7157–7174,
https://doi.org/10.5194/acp-17-7157-2017, 2017.
Short summary
Reduced atmospheric ozone results in increased solar ultraviolet radiation (UVR) at the surface which may potentially negative impact public health. We aimed to assess whether or not the break-up of the Antarctic ozone hole had an impact on ozone and UVR at Cape Point (South Africa). We found a moderate inverse relationship between ozone and UVR at midday on clear-sky days. The Antarctic ozone hole had a limited effect on ozone levels while tropical air masses more frequently affected the site.
Reduced atmospheric ozone results in increased solar ultraviolet radiation (UVR) at the surface...
