Dynamics of the antarctic Ozone Hole

• Project/Area Number: 17540417
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: The University of Tokyo
• Principal Investigator: SATO Kaoru The University of Tokyo, Graduate School of Science, Professor, 大学院理学系研究科, 教授 (90251496)
• Co-Investigator(Kenkyū-buntansha): YAMAMORI Miho Tsuru University, Faculty of Letters, Lecture, Lecturer, 文学部, 講師 (80392728) ; TOMIKAWA Yoshihiro The University of Tokyo, National Institute of Polar Research, Project Researcher, 国立極地研究所, プロジェクト研究員 (20435499)
• Project Period (FY): 2005 – 2006
• Project Status: Completed (Fiscal Year 2006)
• Budget Amount: ¥3,500,000 (Direct Cost: ¥3,500,000); Fiscal Year 2006: ¥1,500,000 (Direct Cost: ¥1,500,000); Fiscal Year 2005: ¥2,000,000 (Direct Cost: ¥2,000,000)
• Keywords: Ozone hole / Transport / Planetary waves / Gravity waves / Polar vortex / Soywa Station / ILAS-II

Research Abstract

Using data from intensive ozonesonde observation at Syowa Station in the Antarctic and from satellite onboard Improved Limb Atmospheric Spectrometer-II (ILAS-II) in 2003, detailed analysis was made to elucidate the dissipation mechanism of the Antarctic ozone hole. It was shown from the tracer-tracer correlation analysis and backward trajectory analysis that the ozone recovery started before the polar vortex breaking, by the Brewer-Dobson circulation and lateral mixing between inside and outside the polar vortex.
Using intensive radiosonde observation data at Syowa Station in 2002, seasonal variation of gravity wave characteristics were analyzed. It was shown that significant amount of gravity waves propagate energy downward in the periods when the polar vortex was stable and when the polar vortex breaking proceeded. Local Rossby number and the parameters estimated by the hodograph analysis indicated that the gravity waves were generated by the spontaneous adjustment mechanism around th e polar vortex.
Ozone lamina observed inside the Antarctic ozone hole observed were examined in terms of their characteristics and causes. Based on ozonesonde data at Syowa Station and Neumayer Station, it was shown that ozone lamina with a vertical depth of 0.4 to 1.4 km frequently appear in the height region of 14-19km where the ozone mixing ratio is quite low. Using backward trajectory analysis, it was revealed that these lamina were originated from the boundary region of the polar vortex.
We analyzed ozone mixing ratio, temperature and horizontal wind velocities in the height region up to 30 km from ozonesonde observations at Fairbanks, Alaska in August, 2003. First, dominant vertical scales observed in the ozone fluctuations were examined using vertical wavenumber spectra. Next, the contribution from atmospheric gravity waves to the fine structure of ozone in the lower stratosphere was quantitatively estimated. About 20% of ozone variance was explained by the vertical displacement mostly due to gravity waves.

Research Products

• [Journal Article] 日本気象学会創立125周年記念解説-中層大気 (2007)
  • Author(s): 佐藤薫, 廣岡俊彦
  • Journal Title: 天気 (印刷中)
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] Statistics of Antarctic surface meteorology based on hourly data in 1957-2007 at Syowa Station (2007)
  • Author(s): K.Sato, N.Hirasawa
  • Journal Title: Polar Sci. (in press)
  • NAID: 110006385852
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] Lower-stratospheric and upper-tropospheric disturbances observed by radiosondes over Thailand during January 2000 (2006)
  • Author(s): S.Ogino, K.Sato, M.D.Yamanaka, A.Watanabe
  • Journal Title: J. Atmos. Sci. 63
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] A diagnostic study of waves on the tropopause (2006)
  • Author(s): Y.Tomikawa, K.Sato, T.G.Shepherd
  • Journal Title: J. Atmos. Sci. 63
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] A neutral wave observed in the Antarctic polar vortex (2006)
  • Author(s): Y.Tomikawa, M.Yoshiki, K.Sato
  • Journal Title: J. Met. Soc. Japan 84 Pages: 97-113
  • NAID: 110004656446
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] A GCM study of orographic gravity waves over Antarctica exceited by katabatic winds (2006)
  • Author(s): S.Watanabe, K.Sato, M.Takahashi
  • Journal Title: J. Geophys. Res. 111
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] Characteristics of inertia gravity waves over the South Pacific as revealed by radiosonde observations (2006)
  • Author(s): M.Yamamori, K.Sato
  • Journal Title: J. Geophys. Res. 111
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] Ozone profiles in the high-latitude stratosphere and lower mesosphere measured by the Improved Limb Atmospheric Spectrometer (ILAS)-II Comparison with other satellite sensors and ozonesondes (2006)
  • Author(s): T.Sugita, H.Nakajima, T.Yokota, H.Kanzawa, H.Gernandt, A.Herber, P.von der Gathen, G.Konig-Langlo, K.Sato, 他30名
  • Journal Title: J. Geophys. Res. 111
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] Combined MU radar and ozonesonde measurements of turbulence and ozone fluxes in the tropo-stratosphere over Shigaraki, Japan (2006)
  • Author(s): N.M.Gavrilov, S.Fukao, H.Hashiguchi, K.Kita, K.Sato, Y.Tomikawa, M.Fujiwara
  • Journal Title: Geophys. Res. Let. 33
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] 昭和基地連結飛揚観測に基づくラジオゾンデデータ品質比較 (2006)
  • Author(s): 吉識宗佳, 木津暢彦, 佐藤薫
  • Journal Title: 天気 53 Pages: 123-133
  • NAID: 110004665054
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] Lower-stratospheric and upper-tropospheric disturbances observed by radiosondes over Thailand during January 2000 (2006)
  • Author(s): S.Ogino, K.Sato, M.D.Yamanaka, A.Watanabe
  • Journal Title: J.Atmos.Sci. 63(doi:10.1175/JAS3801.1) Pages: 3437-3447
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] A diagnostic study of waves on the tropopause. (2006)
  • Author(s): Y.Tomikawa, K.Sato, T.G.Shepherd
  • Journal Title: J.Atmos.Sci. 63(doi:10.1175/JAS3800.1) Pages: 3315-3332
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] A neutral wave observed in the Antarctic polar vortex. (2006)
  • Author(s): Y.Tomikawa, M.Yoshiki, K.Sato
  • Journal Title: J.Met.Soc.Japan 84 Pages: 97-113
  • NAID: 110004656446
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] A GCM study of orographic gravity waves over Antarctica excited by katabatic winds. (2006)
  • Author(s): S.Watanabe, K.Sato, M.Takahashi
  • Journal Title: J.Geophys.Res. 111(doi:10.1029/2005JD006851)
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Characteristics of inertia gravity waves over the South Pacific as revealed by radiosonde observations. (2006)
  • Author(s): M.Yamamori, K.Sato
  • Journal Title: J.Geophys.Res. 111(doi:10.1029/2005JD006861)
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Ozone profiles in the high-latitude stratosphere and lower mesosphere measured by the Improved Limb Atmospheric Spectrometer (ILAS)-II : Comparison with other satellite sensors and ozonesondes. (2006)
  • Author(s): T.Sugita, H.Nakajima, T.Yokota, H.Kanzawa, H.Gernandt, A.Herber, P.von der Gathen, G.Konig-Langlo, K.Sato, V.Dorokhov, V.Yushkov, Y.Murayama, M.Yamamori, S.Godin-Beekmann, F.Goutail, H.Roscoe, T.Deshler, M.Yela, P.Taalas E.Kyro, S.Oltmans, B.Johnson, M.Allaart, Z.Litynska, A.Klekociuk, S.B.Andersen, G.braathen, H.D.Backer, C.Randall, R.Bevilacqua, G.Taha, L.Thompson, H.Irie, M.Ejiri, N.Saitoh, T.Tanaka.Y.Terao, H.Kobayashi, Y.Sasano
  • Journal Title: J.Geophys.Res. 111(doi:10.1029/2005JD006439)
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Combined MU radar and ozonesonde measurements of turbulence ad ozone fluxes in the tropo-stratosphere over Shigaraki, Japan. (2006)
  • Author(s): N.M.Gavrilov, S.Fukao, H.Hashiguchi, K.Kita, K.Sato, Y.Tomikawa, M.Fujiwara
  • Journal Title: Geophys.Res.Let. 33(doi:10.1029/2005GL024002)
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] A comparison of Vaisala RS80-15GH and Meisei RS2-91 radiosonde data based on simultaneous observations at Syowa Station. (2006)
  • Author(s): M.Yoshiki, N.Kizu, K.Sato
  • Journal Title: Tenki 53 Pages: 123-133
  • NAID: 110004665054
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] A neutral wave observed in the Antarctic polar vortex. (2006)
  • Author(s): Y.Tomikawa, M.Yoshiki, K.Sato
  • Journal Title: J. Met. Soc. Japan 84 Pages: 97-113
  • NAID: 110004656446
• [Journal Article] A general circulation model study of orographic gravity waves over Antarctica excited by katabatic winds. (2006)
  • Author(s): S.Watanabe, K.Sato, M.Takahashi
  • Journal Title: J. Geophys. Res. 111
• [Journal Article] Characteristics of inertia gravity waves over the South Pacific as revealed by radiosonde observations. (2006)
  • Author(s): M.Yamamori, K.Sato
  • Journal Title: J. Geophys. Res. 111
• [Journal Article] Combined MU radar and ozonesonde measurements of turbulence and ozone fluxes in the tropo-stratosphere over Shigaraki, Japan. (2006)
  • Author(s): N.M.Gavrilov, S.Fukao, H.Hashiguchi, K.Kita, K.Sato, Y.Tomikawa, M.Fujiwara
  • Journal Title: Geophys. Res. Let. 33
• [Journal Article] A diagnostic study of waves on the tropopause (2006)
  • Author(s): Y.Tomikawa, K.Sato, T.G.Shepherd
  • Journal Title: J.Atmos.Sci. in press
• [Journal Article] Lower-stratospheric and upper-tropospheric disturbances observed by radiosondes over Thailand during January 2000 (2006)
  • Author(s): S.Ogino, K.Sato, M.D.Yamanaka, A.Watanabe
  • Journal Title: J.Atmos.Sci. in press
• [Journal Article] Characteristics of inertia-gravity waves over the south Pacific as revealed by radiosonde observation (2006)
  • Author(s): M.Yamamori, K.Sato
  • Journal Title: J.Geophys.Res. in press
• [Journal Article] Ozone profiles in the high-latitude stratosphere and lower mesosphere measured by the Improved Limb Atmospheric Spectrometer (ILAS)-II : Comparison with other satellite sensors and ozonesondes (2006)
  • Author(s): T.Sugita, 他38名(8番目)
  • Journal Title: J.Geophys.Res. in press
• [Journal Article] Combined MU radar and ozonesonde measurements of turbulence and ozone fluxes in the tropo-stratosphere over Shigaraki, Japan (2006)
  • Author(s): N.M.Gavrilov, S.Fukao, H.Hashiguchi, K.Kita, K.Sato, Y.Tomikawa, M.Fujiwara
  • Journal Title: Geophys.Res.Let. in press
• [Journal Article] 気球および衛星観測に基づく南極オゾン層回復過程三次元構造の研究 (2006)
  • Author(s): 佐藤薫, 他11名
  • Journal Title: 第20回大気化学シンポジウム報告集 印刷中
• [Journal Article] 気球および衛星観測に基づく南極オゾン層回復過程三次元構造の研究 (2006)
  • Author(s): 佐藤薫, 他11名
  • Journal Title: 平成17年度大気球シンポジウム報告集 印刷中
• [Journal Article] 大気重力波と気象学との関わり (2006)
  • Author(s): 佐藤薫
  • Journal Title: 京都大学数理解析研究所講究録 印刷中
• [Journal Article] A neutral wave observed in the Antarctic polar vortex (2006)
  • Author(s): Y.Tomikawa, M.Yoshiki, K.Sato
  • Journal Title: J.Met.Soc.Japan 84 Pages: 97-113
  • NAID: 110004656446
• [Journal Article] Design of the NIPR trajectory model (2005)
  • Author(s): Y.Tomikawa, K.Sato
  • Journal Title: Polar Meteorology and Glaciology 19 Pages: 120-137
  • NAID: 110002261737
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] Arctic Study of Tropospheric Aerosol and Radiation (ASTAR) 2000 : Arctic haze case study. (2005)
  • Author(s): T.Yamanouchi, R.Treffeisen, A.Herber, M.Shiobara, S.Yamagata, K.Hara, K.Sato, 他9名
  • Journal Title: Tellus 57B Pages: 141-152
  • Description: 「研究成果報告書概要(和文)」より
• [Journal Article] Design of the NIPR trajectory model. (2005)
  • Author(s): Y.Tomikawa, K.Sato
  • Journal Title: Polar Meteorology and Glaciology 19 Pages: 120-137
  • NAID: 110002261737
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Arctic Study of Tropospheric Aerosol and Radiation (ASTAR) 2000:Arctic haze case study. (2005)
  • Author(s): T.Yamanouchi, R.Treffeisen, A.Herber, M.Shiobara, S.Yamagata, K.Hara, K.Sato, M.Yabuki, Y.Tomikawa, A.Rinke, R.Neuber, R.Schumachter, M.Kriews, J.Strom, O.Schrems, H.Gernandt
  • Journal Title: Tellus 57B Pages: 141-152
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Arctic Study of Tropospheric Aerosol and Radiation (ASTAR) 2000 : Arctic haze case study (2005)
  • Author(s): T.Yamanouchi, 他15名(6番目)
  • Journal Title: Tellus 57B Pages: 141-152
• [Journal Article] The Middle atmosphere
  • Author(s): K.Sato, T.Hirooka
  • Journal Title: Tenki (in press)
  • NAID: 110006279299
  • Description: 「研究成果報告書概要(欧文)」より
• [Journal Article] Statistics of Antarctic surface meteorology based on hourly data in 1957-2007 at Syowa Station.
  • Author(s): K.Sato, N.Hirasawa
  • Journal Title: Polar Sci. (in press)
  • NAID: 110006385852
  • Description: 「研究成果報告書概要(欧文)」より