HR: 09:00h
AN: A11E-04    [Abstracts]
TI: Composition Changes in the Polar Stratosphere and Mesosphere Induced by the 2003 Solar Proton Events
AU: * Lopez-Puertas, M
EM: puertas@iaa.es
AF: Institututo de Astrofisica de Andalucia, Apdo. 3004, Granada, 18080 Spain
AU: Funke, B
AF: Institututo de Astrofisica de Andalucia, Apdo. 3004, Granada, 18080 Spain
AU: Clarmann, T v
AF: Institut fur Meteorologie und Klimaforschung, Univesitat Karlsruhe/Forschungszentrum Karlsruhe GmbH, Postfach 3640, Karlsruhe, D-76021 Germany
AU: Fischer, H
AF: Institut fur Meteorologie und Klimaforschung, Univesitat Karlsruhe/Forschungszentrum Karlsruhe GmbH, Postfach 3640, Karlsruhe, D-76021 Germany
AU: Gil-Lopez, S
AF: Institututo de Astrofisica de Andalucia, Apdo. 3004, Granada, 18080 Spain
AU: Glatthor, N
AF: Institut fur Meteorologie und Klimaforschung, Univesitat Karlsruhe/Forschungszentrum Karlsruhe GmbH, Postfach 3640, Karlsruhe, D-76021 Germany
AU: Grabowski, U
AF: Institut fur Meteorologie und Klimaforschung, Univesitat Karlsruhe/Forschungszentrum Karlsruhe GmbH, Postfach 3640, Karlsruhe, D-76021 Germany
AU: Hopfner, M
AF: Institut fur Meteorologie und Klimaforschung, Univesitat Karlsruhe/Forschungszentrum Karlsruhe GmbH, Postfach 3640, Karlsruhe, D-76021 Germany
AU: Kellmann, S
AF: Institut fur Meteorologie und Klimaforschung, Univesitat Karlsruhe/Forschungszentrum Karlsruhe GmbH, Postfach 3640, Karlsruhe, D-76021 Germany
AU: Kaufmann, M
AF: Institut fur Chemie und Dynamik der Geosphere (ICG-I), Forschungszwntrum Juelich, Juelich, 52425 Germany
AU: Kiefer, M
AF: Institut fur Meteorologie und Klimaforschung, Univesitat Karlsruhe/Forschungszentrum Karlsruhe GmbH, Postfach 3640, Karlsruhe, D-76021 Germany
AU: Koukouli, M E
AF: Institututo de Astrofisica de Andalucia, Apdo. 3004, Granada, 18080 Spain
AU: Linden, A
AF: Institut fur Meteorologie und Klimaforschung, Univesitat Karlsruhe/Forschungszentrum Karlsruhe GmbH, Postfach 3640, Karlsruhe, D-76021 Germany
AU: Mengistu Tsidu, G
AF: Institut fur Meteorologie und Klimaforschung, Univesitat Karlsruhe/Forschungszentrum Karlsruhe GmbH, Postfach 3640, Karlsruhe, D-76021 Germany
AU: Milz, M
AF: Institut fur Meteorologie und Klimaforschung, Univesitat Karlsruhe/Forschungszentrum Karlsruhe GmbH, Postfach 3640, Karlsruhe, D-76021 Germany
AU: Steck, T
AF: Institut fur Meteorologie und Klimaforschung, Univesitat Karlsruhe/Forschungszentrum Karlsruhe GmbH, Postfach 3640, Karlsruhe, D-76021 Germany
AU: Stiller, G P
AF: Institut fur Meteorologie und Klimaforschung, Univesitat Karlsruhe/Forschungszentrum Karlsruhe GmbH, Postfach 3640, Karlsruhe, D-76021 Germany
AU: Wang, D Y
AF: Institut fur Meteorologie und Klimaforschung, Univesitat Karlsruhe/Forschungszentrum Karlsruhe GmbH, Postfach 3640, Karlsruhe, D-76021 Germany
AU: Dudhia, A
AF: Atmospheric, Oceanic and Planetary Physics, Oxford Univ., Clarendon Laboratory, Parks Road, Oxford, OX1 3PU United Kingdom
AB: The Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) is a high-resolution limb sounder on board the European Space Agency ENVISAT satellite, successfully launched on March 1, 2002. MIPAS measures the atmospheric emission in the 4.15-14.6 $\mu$m range with a spectral resolution of 0.05 cm$^{-1}$ (apodised). The instrument scans the limb operationally from 6 km up to 68 km with a near-global latitude coverage both at day and nighttime. From MIPAS spectra many atmospheric constituents are retrieved, including O$_3$, H$_2$O, CH$_4$, CO, and nitrogen oxides (NO and NO$_2$). We show in this paper the significant depletions measured in O$_3$ at high latitudes above 35~km after the solar protons events of 28th October and 4th November 2003 in North and South polar caps. Depletions are also observed in water vapour. The temporal evolution of decreases in O$_3$ of the changes in NO$_x$ (NO+NO$_2$) and NO$_y$ (NO$_x$, HNO$_3$, N$_2$O$_5$, ClONO$_2$) are shown. Increases of lower mesospheric NO$_2$ of near 100 ppbv were measured by MIPAS. The temporal evolution of NO$_2$, O$_3$, and HNO$_3$ along the winter 2003-2004 are also presented. The simultaneous measurements of such a large number of atmospheric species, with global coverage, obtained by MIPAS constitute an unprecedented dataset to study the atmospheric effects caused by large solar proton events.
DE: 0340 Middle atmosphere--composition and chemistry
DE: 0341 Middle atmosphere--constituent transport and chemistry (3334)
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting