TY - JOUR A1 - Cairo, Francesco A1 - Buontempo, Carlo A1 - MacKenzie, Robert A. A1 - Schiller, Cornelius A1 - Volk, C.-Michael A1 - Adriani, Alberto A1 - Mitev, Valentin A1 - Matthey, Renaud A1 - Di Donfrancesco, Guido A1 - Oulanovsky, Alexey A1 - Ravegnani, Fabrizio A1 - Yushkov, Vladimir A1 - Snels, Marcel A1 - Cagnazzo, Chiara A1 - Stefanutti, Leopoldo T1 - Morphology of the tropopause layer and lower stratosphere above a tropical cyclone: a case study on cyclone Davina (1999) T2 - Atmospheric chemistry and physics / Discussions, 7.2007, S. 18319-18360 N2 - During the APE-THESEO mission in the Indian Ocean the Myasishchev Design Bureau stratospheric research aircraft M55 Geophysica performed a flight over and within the inner core region of tropical cyclone Davina. Measurements of total water, water vapour, temperature, aerosol backscattering, ozone and tracers were made and are discussed here in comparison with the averages of those quantities acquired during the campaign time frame. Temperature anomalies in the tropical tropopause layer (TTL), warmer than average in the lower part and colder than average in the upper TTL were observed. Ozone was strongly reduced compared to its average value, and thick cirrus decks were present up to the cold point, sometimes topped by a layer of very dry air. Evidence for meridional transport of trace gases in the stratosphere above the cyclone and the perturbed water distribution in the TTL is illustrated and discussed. Y1 - 2007 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/29250 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-292509 UR - www.atmos-chem-phys-discuss.net/7/18319/2007/ SN - 1680-7367 SN - 1680-7375 N1 - © Author(s) 2007. This work is licensed under a Creative Commons License. VL - 7 SP - 18319 EP - 18360 PB - European Geosciences Union CY - Katlenburg-Lindau ER -