Ibaraki University's
Graduate School of Science and Engineering (Science)
Department of Science (Earth Sciences Course)


KITA Kazuyuki

Other affiliation / position

  1. Institute for Global Change Adaptation Science (ICAS)


  1. Research associate, Faculty of Science, University of Tokyo 1990/04-2000/06
  2. Research associate, Research Center for Advanced Science and Technology, University of Tokyo 2000/07-2002/06
  3. Associate Professor, Faculty of Science, Ibaraki University 2002/07-Present

Academic background

  1. The University of Tokyo Faculty of Science 地球物理学科 1986 Graduated
  2. The University of Tokyo Graduate School, Division of Science 地球惑星物理専攻 Doctor course 1990 Withdrawn before completion

Academic degrees

  1. 理学博士 University of Tokyo

Current state of research and teaching activities

1)Introduction to atmospheric environmental sciences
2)Basic meteorology
3)Basic atmospheric chemistry
4)Atmospheric chemistry for graduate students

1)Photochemistry of tropospheric ozone
2)Environmental impact of biomass burning including tropospheric ozone
3)Meteorological processes affecting ozone distribution
4)Cheical transformation processes of tropospheric aerosols

Research Areas

  1. Weather/Oceanic Physics/Hydrology
  2. Environmental Dynamic Analysis
  3. Upper Atmospheric Physics

Research keywords

  1. Atmospehric environmental science, Atmospheric chemistry and physics, ozone, greenhouse effect, aerosol

Subject of research

  1. Atmospheric environmental Science 大気環境に影響を及ぼす大気成分の変動メカニズムを中心に、大気環境全般について研究を行っている。
  2. Photochemical processes of ozone and aerosols in polluted air over East Asia 1999-Present

Proposed theme of joint or funded research

  1. 大気汚染物質、環境影響物質の測定法の開発 Joint research with other research organizations such as universities. Commisioned research,Joint research
  2. 大気環境物質、大気汚染の動態の研究 Wish to undertake joint research with industry and other organizations including private sector. Commisioned research,Joint research


  1. 原発事故環境汚染―福島第一原発事故の地球科学的側面 中島映至、大原利眞、植松光男、恩田裕一 東京大学出版会 2014 「3.7 大気エアロゾル放射能の観測と地表からの再飛散の影響」を執筆。
  2. 太陽地球系科学 日本地球電磁気・地球惑星圏学会 学校教育ワーキンググループ 京都大学学術出版会 2010 本書は、太陽活動と地球磁気圏・大気・地磁気についての教科書である。「第8章太陽と地球大気・地球環境」を執筆。
  3. アサヒ・エコブックス 地球変動の最前線を訪ねる 北 和之,小川 利紘,及川 武久,陽 捷行 清水弘文堂書房 2010 本書は、地球環境にとって重要な大気中の炭素循環や窒素循環を軸に、最新の研究成果を紹介したもの。第Ⅲ部「4.熱帯林火災の大気環境への影響」を執筆。
  4. 気象研究ノート 209号 先端質量分析技術による反応性大気化学組成の測定 第2章化学イオン化質量分析法による気体成分の測定 北 和之、森野 悠、竹川暢之、廣川 淳、近藤 豊、小池 真、谷本浩志 日本気象学会 2005
  5. 「対流圏光化学」、キーワード気象の事典 北 和之,(新田 尚,伊藤朋之,住 明正,木村龍治,安成哲三編) 朝倉書店 2002


  1. Research paper (scientific journal) Joint Fungal spore involvement in the resuspension of radiocaesium in summer Yasuhito Igarashi, Kazuyuki Kita, Teruya Maki, Takeshi Kinase, Naho Hayashi, Kentaro Hosaka, Kouji Adachi, Mizuo Kajino, Masahide Ishizuka, Tsuyoshi Thomas Sekiyama, Yuji Zaizen, Chisato Takenaka, Kazuhiko Ninomiya, Hiroshi Okochi, and Atsuyuki Sorimachi Scientific Reports 9(1)/ 1954 2019 10.1038/s41598-018-37698-x
  2. Joint Concentrations and Size Distributions of Black Carbon in the Surface Snow of Eastern Antarctica in 2011 T. Kinase K. Adachi N. Oshima K. Goto‐Azuma Y. Ogawa‐Tsukagawa Y. Kondo N. Moteki S. Ohata T. Mori M. Hayashi K. Hara H. Kawashima K. Kita Journal of Geophysical Research - Atmosphere Wiley 2019/12/17 10.1029/2019JD030737
  3. Research paper (scientific journal) Joint The seasonal variations of atmospheric 134, 137Cs activity and possible host particles for their resuspension in the contaminated areas of Tsushima and Yamakiya, Fukushima, Japan Kinase T., Kita K., Igarashi Y., Adachi K., Ninomiya K., Shinohara A., Okochi H., Ogata H., Ishizuka M., Toyoda S., Yamada K., Yoshida N., Zaizen Y., Mikami M., Demizu H., Onda Y. Progress in Earth and Planetary Sciences 日本地球惑星科学連合 5/ 12 2018 10.1186/s40645-018-0171-z
  4. Research paper (scientific journal) Joint Characterization of hydrocarbons in aerosols and investigation of biogenic1sources as a carrier of radiocesium isotopes Nakagawa M., Yamada K., Toyoda S., Kita K., Igarashi Y., Komatsu S., Yamada K., Yoshida N. Geochemical Journal 地球化学会 52/ 2, 163-172 2018 10.2343/geochemj.2.0512
  5. Research paper (scientific journal) Joint Atmospheric Activity Concentration of 90Sr and 137Cs after the Fukushima Daiichi Nuclear Accident Zijian Zhang, Kazuhiko Ninomiya, Yoshiaki Yamaguchi, Kazuyuki Kita, Haruo Tsuruta, Yasuhito Igarashi, and Atsushi Shinohara Environmental Science & Technology 52, 9917-9925 2018 10.1021/acs.est.8b01697

Research presentations

  1. Poster presentation Tropospheric ozone-enhanced layers observed over the equatorial Pacific Ocean and the contribution of transport of midlatitude UT/LS air American Geophysical Union 2007 Fall Meeting 2007/12/12 Occurence and its seasonal variation of ozone-enhanced layers in the troposphere over euatorial Pacific Ocean were investogated based on ozonesonde data obtained at three Southern Hemisphere ADditional OZonesondes (SHADOZ) sites, Watukosek, American Samoa and San Cristobal, for 6 years between 1998 and 2003. The O3-enhanced layers were frequently observed at the three sites, and their occurrence was about 50% on average. The formation processes of O3-enhanced layers were investigated by meteorological analyses including backward trajectories. Several O3-enhanced layers resulted from the transport of air masses affected by biomass burning. The contribution of this process was about 30% at San Cristobal during February to March period and August to September period, while it was relatively low, about 10%, at Watukosek and Samoa. A significant part of the O3-enhanced layers were attributed to the transport of midlatitude upper-troposphere and lower-stratosphere (UT/LS) air. Meteorological analyses indicated that these layers were originated from equatorward and downward transport of the midlatitude UT/LS air masses through a narrow region between high and low pressure systems around subtropical jet stream. This process accounts for about 50% of observed O3-enhanced layers at Watukosek, about 80% of those at Samoa, and about 30% of those at San Cristobal, indicating that it was important for O3 budget over the equatorial Pacific Ocean.

Intellectual property rights

  1. Patent 二酸化窒素光分解コンバーターおよび二酸化窒素光分解コンバーターを備えた窒素酸化物濃度測定装置 特願2009-295289 2009/12/25 特許4543186 2010/07/09

Memberships of academic societies

  1. American Geophysics Union
  2. 大気環境学会
  3. 大気化学研究会
  4. 日本気象学会
  5. 地球電磁気・地球惑星圏学会

Committee Career

  1. 地球電磁気・地球惑星圏学会 運営委員 2003/04-Present
  2. 大気化学研究会 運営委員 1998/10-2005/03