HR: 1340h
AN: A13C-0950    [Abstracts]
TI: Comparison of ILAS-II Data With Ground-based FTIR Measurements of O3, HNO3, N2O, and CH4 Over Kiruna, Sweden
AU: * Griesfeller, A
EM: alexandra.griesfeller@nies.go.jp
AF: National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, 305-8506 Japan
AU: Griesfeller, J
EM: jan.griesfeller@nies.go.jp
AF: National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, 305-8506 Japan
AU: Hase, F
EM: frank.hase@imk.fzk.de
AF: IMK-ASF, Forschungszentrum Karlsruhe, Postfach 3640, Karlsruhe, 76021 Germany
AU: Blumenstock, T
EM: thomas.blumenstock@imk.fzk.de
AF: IMK-ASF, Forschungszentrum Karlsruhe, Postfach 3640, Karlsruhe, 76021 Germany
AU: Nakajima, H
EM: hide@nies.go.jp
AF: National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, 305-8506 Japan
AB: The Improved Limb Atmospheric Spectrometer-II (ILAS-II), a solar occultation instrument, was developed by the Ministry of the Environment (MOE) of Japan. ILAS-II was launched onboard the Advanced Earth Observing Satellite-II (ADEOS-II) in December 2002 and took measurements between February and October 2003. Ground-based FTIR (Fourier Transform Infra-Red) measurements were performed at Kiruna (northern Sweden, 68° N, 20° E) as a part of ILAS-II validation. The Kiruna station is a part of the Network for the Detection of Stratospheric Change (NDSC) and records continuous ground-based measurements that provide a good statistical basis for the validation of satellite data. These vertical profiles of O₃, HNO₃, N₂O, and CH₄ were calculated with Version 9.2 of the retrieval code PROFFIT and the forward model KOPRA from spectra taken with a Bruker IFS-120HR FTIR spectrometer. The retrieved profiles were compared with ILAS-II measurements processed with the Version 1.4 retrieval algorithm. Nineteen coincidence days between FTIR and ILAS-II observations were determined and spectra taken on these days were analyzed. This study investigated differences between vertical profiles derived from retrievals of FTIR data and those retrieved from ILAS-II.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0322 Constituent sources and sinks
DE: 0340 Middle atmosphere: composition and chemistry
DE: 0341 Middle atmosphere: constituent transport and chemistry (3334)
DE: 3360 Remote sensing
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005