HR: 1340h
AN: A23B-0945    [Abstracts]
TI: Ground-Based FTIR Observations of Ozone, HNO3, HCl, and HF in Poker Flat, Alaska from 1999 to 2004
AU: * Kagawa, A
EM: a.kagawa@fip.fujitsu.com
AF: FUJITSU FIP Co., 2-45, Aomi, Koto-ku, Tokyo, 135-8686 Japan
AU: Kasai, Y
EM: ykasai@nict.go.jp
AF: National Institute of Information and Communications Technology, 4-2-1, Nukui-Kitamachi, Koganei, Tokyo, 184-8795 Japan
AU: Jones, N
EM: njones@uow.edu.au
AF: University of Wollongong, NSW, Wollongong, 2522 Australia
AU: Murayama, Y
EM: murayama@nict.go.jp
AF: National Institute of Information and Communications Technology, 4-2-1, Nukui-Kitamachi, Koganei, Tokyo, 184-8795 Japan
AU: Murayama, Y
EM: murayama@nict.go.jp
AF: National Institute of Polar research, 9-10, Kaga 1-chome,Itabashi-ku, Tokyo, 173-8515 Japan
AU: Murcray, F
EM: fmurcray@du.edu
AF: University of Denver, 2199 S. University Blvd., Denver, CO 80208 United States
AB: Stratospheric ozone and related species have been observed from 1999 to date over Poker Flat, Alaska (65N, 147W) by Fourier-transform solar-absorption infrared spectrometer. The purpose of this study is to investigate seasonal and inter-annual variability of ozone and ozone-related chemical species with simultaneous measurements in the lower stratosphere. For this purpose, vertical profiles of O3, HNO3, HCl, and HF from 1999 were retrieved using Rodger's OEM method [Rodgers, 2000]. O3, HNO3, HCl, and HF are retrieved using all of absorption lines in the range over 3051.2-3051.9, 867.45-869.25, 2925.80-2926, 4038.80-4039.15 cm-1, respectively. Retrieval errors were estimate [Rodgers, 2000]. Total errors are calculated from sum of measurement, smoothing, and model parameter error. The errors of total column for O3, HNO3, HCl, and HF were estimated about 5, 12, 6, 7 %, respectively. Retrieved species are also consistent with HALOE and TOMS data. Time series of chemical species for several independent layer indicated by averaging kernel are derived. Inter-annual variabilities for these species over Poker Flat are preliminary estimated from 6 years data of 1999-2004. HCl and HF total column over Poker Flat from 6 years showed small negative and positive inter-annual change, respectively. The estimated variabilities agree qualitatively with HALOE observations. The rates of variabilities are different depend on the layers. Detailed investigation will be presented. References [1]Newchurch, et al, J. Geophys. Res., 108, 4507, doi:10.1029/2003JD003471, 2003. [2] Rodgers, C. O., Inverse method for atmospheric sounding, World Scientific, 2000. [3] Solomon, S., Review of Geophysics, Vol. 37, 1999.
UR: http://salmon.nict.go.jp/index_e.html
DE: 0340 Middle atmosphere: composition and chemistry
DE: 0341 Middle atmosphere: constituent transport and chemistry (3334)
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005