STRAPOLETE : Studying summer polar stratosphere.

• Main Authors: Payan, Sébastien, Huret, Nathalie, Berthet, Gwenaël, Catoire, Valéry, Renard, Jean-Baptiste, Thiéblemont, Rémi, Camy-Peyret, Claude, Té, Y.-V., Bureau, Jérôme, Pondrom, M., Brogniez, C., Lefèvre, Franck, Godin-Beekmann, Sophie, Pfeilsticker, K., Dorf, M., Kreycy, S., Werner, B., Orsolini, Y.
• Other Authors: Laboratoire de Physique Moleculaire pour l'Atmosphere et l'Astrophysique (LPMAA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales Paris (CNES), Laboratoire d’Optique Atmosphérique - UMR 8518 (LOA), Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), STRATO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut für Umweltphysik Heidelberg, Universität Heidelberg Heidelberg, Institute of Environmental Physics Heidelberg (IUP), Norwegian Institute for Air Research (NILU)
• Format: Conference Object
• Language: English
• Published: HAL CCSD 2010
• Subjects: [PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP]; [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP]; Kiruna; International Polar Year
• Online Access: https://hal.archives-ouvertes.fr/hal-00526316

International audience The polar stratosphere in the summertime remains largely unexplored. Dynamical conditions are characterizedby large scale transport and mixing between air masses of higher and lower latitude origins. Understanding theseexchanges is crucial since they have a large impact on the distribution of trace gases and aerosols at polar latitudes,and thus on the stratospheric ozone budget. Ozone change affects the radiative balance, the coupling betweentroposphere and stratosphere, and therefore the climate.In the framework of the International Polar Year, the STRAPOLETE project starts on January 2009. It is associatedwith a successful balloon borne campaign which took place close to Kiruna (Sweeden) from 2 August 2009 to12 September 2009 with eight balloon flights. During this campaign the main characteristics of the summertimearctic stratosphere have been captured. The data set obtained using UV-visible and infrared instruments, remoteand in situ sensing embarked spectrometers provided detailed information on vertical distributions of more thanfifteen chemical tracers and reactive species from the upper troposphere to the middle stratosphere. A number of insitu optical aerosol counters, a UV-visible remote spectrometer for the aerosol extinction and a photopolarimeterprovided information on the nature and size distribution of the stratospheric aerosols. These balloon measurementswith high precision and high vertical resolution are relevant to qualify the dynamical processes occurring in thisregion during summertime, the aerosols variability, the bromine abundance and establish a reference state of thepolar summer stratosphere. The data set is completed by satellite data offering large spatial coverage of the regionof interest. Data analysis is made using relevant dynamical (trajectory calculations, contour advection model) andchemistry-transport models (CTM) to highlight major mechanisms that control the distribution of tracers, aerosolsand bromine.An overview of the project, its scientific ...