Development of spectroscopic system for the measurements of stratospheric OClO and BrO

1993 Fiscal Year Final Research Report Summary

• Project/Area Number: 04554015
• Research Category: Grant-in-Aid for Developmental Scientific Research (B)
• Allocation Type: Single-year Grants
• Research Field: Space and upper atmospheric physics
• Research Institution: Nagoya University
• Principal Investigator: KONDO Yutaka Nagoya Univ.Solar Terr.Env.Lab., Professor, 太陽地球環境研究所, 教授 (20110752)
• Co-Investigator(Kenkyū-buntansha): NAKAJIMA Hideaki Nagoya Univ.Solar Terr.Env.Lab., Res.Assoc., 太陽地球環境研究所, 助手 (20217722) ; IWASAKA Yasunobu Nagoya Univ.Solar Terr.Env.Lab., Professor, 太陽地球環境研究所, 教授 (20022709)
• Project Period (FY): 1992 – 1993
• Keywords: OClO / BrO / Spectrometer / NO_2 / Ozone / Stratosphere

Research Abstract

An automated grating spectrometer has been developed for possible measurements of OClO and BrO in the stratosphere by zenith sky technique. The monochromator has a field of view of F4.2 using a 68x68 mm, 2400 grove/mm grating. The detector is a 9804 photomultiplier and its gain is adjusted over a range of 2x105 by varying the high voltage. Wavelength is scanned by rotating the grating using a sine bar mechanism driven by a stepping moror. The wavelength region covered is 430-502 nm for the current tests. Processing uses 432 to 500 nm of this spectrum. The cross sections fitted are NO_2, O_3, H_2O, Ring effect, Rayleigh scattering and O_4, NO_2 and O_3 column amounts have been determined with 1 % precision. Residual absorption after subtraction from the observed total absorption is less than 0.1 %. This fulfillls necessary condition for the detection of OClO and BrO.

Research Products

• [Publications] Y.Kondo et al.: "Reactive nitrogen,ozone,and nitrate aerosols observed in the Arctic stratosphere in January 1990." J.Geophys.Res.97. 13025-13038 (1992)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Y.Iwasaka et al.: "Chemical state of polar stratospheric aerosols." Proc.NIPR Sympos.5. 1-8 (1992)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] M.Koike et al.: "Decrease of stratospheric NO_2 observed at 44^0N due to Pinatubo volcanic aerosols" Geophys.Res.Lett.20. 1975-1978 (1993)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Y.Kondo et al.: "Total reactive nitrogen,N_2O,and ozone in the winter Arctic stratosphere" Geophys.Res.Lett.(1994)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] P.Aimedieu et al.: "In situ measurement of nitric oxide,ozone and aerosol in the candinavian Arctic stratosphere in January 1992" Geophys.Res.Lett.(1994)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Y.Kondo et al.: "Ground based measurements of column amounts of NO_2 over Syowa Station,Antarctica." J.Geophys.Res.(1994)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Kondo, Y., P.Aimedieu, M.Koike, Y.Iwasaka, P.A.Newman, U.Schmidt, and W.A.Matthews: "Reactive nitrogen, ozone, and nitrate aerosols observed in the Arctic stratosphere in January 1990." J.Geophys.Res.97. 13025-13038 (1992)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Iwasaka, Y., M.Hayashi, Y.Kondo, M.Koike, S.Koga, M.Yamato, P.Aimedieu, and W.A.Matthews: "Chemical state of polar stratospheric aerosols." Proc.NIPR Sympos.Polar Meteorol.Glacio.5. 1-8 (1992)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Koike, M., Y.Kondo, W.A.Matthews, P.V.Johnston: "Decrease of stratospheric NO_2 observed at 44。C due to Pinatubo volcanic aerosols" Geophys.Res.Lett.20. 1975-1978 (1993)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Kondo, Y., W.A.Matthews, P.V.Johnston, M.Hayashi, M.Koike, Y.Iwasaka, A.Shimizu, T.Yamanouchi, and S.Aoki: "Ground based NO_2 and O_3 measurements by visible spectrometer at Syowa base (69。S), Antarctica." Proc.Quadren.Ozone Symp.(in press). (1994)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Kondo, Y., U.Schmidt, T.Sugita, P.Aimedieu, M.Koike, H.Ziereis, and Y.Iwasaka: "Total reactive nitrogen, N_2O, and ozone in the winter Arctic stratosphere" Geophys.Res.Lett.(in press). (1994)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Aimedieu, P., Y.Kondo, T.Sugita, M.Koike, and W.R.Sheldon: "In situ measurement of nitric oxide, ozone and aerosol in thecandinavian Arctic stratosphere in January 1992" Geophys.Res.Lett.(in press). (1994)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Kondo, Y., W.A.Matthews, S.Solomon, M.Hayashi, M.Koike, and K.Yamazaki: "Ground based measurements of column amounts of NO_2 over Syowa Station, Antarctica." J.Geophys.Res.(in press). (1994)
  • Description: 「研究成果報告書概要(欧文)」より