Updated on 2023/08/16
博士（理学) （ 2001.3 名古屋大学 ）
atmospheric aerosol
marine biogenic sulfur compounds
atmospheric physics and chemistry
Others / Others / 気象・海洋物理・陸水学
Others / Others / Environmental Dynamic Analysis
Others / Others / 地球宇宙化学
都市大気オゾンの光化学生成とその前駆物質の観測的研究
Study of atmospheric photochemical processes over the Northwestern Pacific
Study of atmospheric aerosols and cloud formation processes induced by the marine biospheric sulfur compounds
伊勢湾周辺の海陸風にともなう風のホドグラフ構造の鉛直分布と大気汚染物質の挙動解析
Nagoya University Graduate School, Division of Natural Science
1985.4 - 1988.3
Country： Japan
Hokkaido University Faculty of Science
1980.4 - 1985.3
Country： Japan
日本地球惑星科学連合
The Japan Society of Atmospheric Chemistry
日本気象学会
公益社団法人日本気象学会電子情報委員会 委員
2020.4 - 2023.3
Committee type：Academic society
日本気象学会電子情報委員会 委員
2018.4 - 2020.3
Committee type：Academic society
日本気象学会電子情報委員会 委員
2016.7 - 2018.3
Committee type：Academic society
2016年度日本気象学会秋季大会実行委員会 委員
2015.7 - 2016.10
Committee type：Academic society
公益社団法人日本気象学会中部支部理事会 幹事
2012.7
2011年度日本気象学会秋季大会実行委員会 委員
2011.4 - 2011.11
Chemical processes of wintertime aerosols over the East China Sea based on aircraft and ground measurements: Comparison with the Sea of Japan Reviewed International coauthorship
Kagawa, M., Katsuta, N., Deepak, A., Adhikari, M., Nagao, I., Ishizaka, Y.
Atmospheric Pollution Research Vol. 14 2023.8
Chemical characteristics of wintertime aerosol and cloud over the Sea of Japan based on aircraft and ground measurements Reviewed International coauthorship
Kagawa, M., Katsuta, N., Nagao, I., Deepak, A., Ishizaka, Y.
Atmospheric Pollution Research Vol. 14 2023.1
Distribution of dimethylsulfoniopropionate degradation genes reflects strong water current dependencies in the Sanriku coastal region in Japan: From mesocosm to field study Reviewed
Y. Cui, S. Wong, R. Kaneko, A. Mouri, Y. Tada, I. Nagao, S. Chun, H. Lee, C. Ahn, H. Oh, Y. Sato-Takabe, K. Suzuki, H. Fukuda, T. Nagata, K. Kogure, K. Hamasaki
Vol. 13 2020.7
Vertical profiles of wind hodographs in the summer land-sea breeze observed at the port of Nagoya Reviewed
Vol. 65 page： 503-520 2018.9
Biogenic sulfur compounds in spring phytoplankton bloom in the western North Pacific off the coast of northern Japan
I. Nagao, Y-J. Eum, Y. Iwamoto, Y. Tada, K. Suzuki, A. Tsuda, M. Toratani, K. Hamasaki, M. Uematsu
Progress in Oceanography Vol. 165 page： 145 - 157 2018
DMS研究の進展と現状 Invited Reviewed
永尾一平
北海道大学低温科学研究所紀要 Vol. 72 page： 1-15 2014.3
Climate regulation by marine biogenic sulfur compound, dimethyl sulfide (DMS) Reviewed
Ippei Nagao
Vol. 27 ( 3 ) page： 269-277 2012.9
Differing Growth Responses of Major Phylogenetic Groups of Marine Bacteria to Natural Phytoplankton Blooms in the Western North Pacific Ocean Reviewed
Y. Tada, A. Taniguchi, I. Nagao, T. Miki, M. Uematsu, A. Tsuda, K. Hamasaki
Applied and Environmental Microbiology Vol. 77 ( 12 ) page： 4055-4065 2011.6
Atmospheric trace gas measurements during SEEDS-II over the northwestern pacific Reviewed
Kato Shungo, Watari Mayo, Nagao Ippei, Uematsu Mitsuo, Kajii Yoshizumi
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY Vol. 56 ( 26 ) page： 2918-2927 2009.12
Production and air-sea flux of halomethanes in the western subarctic Pacific in relation to phytoplankton pigment concentrations during the iron fertilization experiment (SEEDS II) Reviewed
Hashimoto Shinya, Toda Shuji, Suzuki Koji, Kato Shungo, Narita Yasusi, Kurihara Michiko K., Akatsuka Yoko, Oda Hiroshi, Nagai Takahiro, Nagao Ippei, Kudo Isao, Uematsu Mitsuo
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY Vol. 56 ( 26 ) page： 2928-2935 2009.12
*Responses of DMS in the seawater and atmosphere to iron enrichment in the subarctic western North Pacific (SEEDS-II) Reviewed
Nagao, I., Hashimoto, S., Suzuki, K., Toda, S., Narita, Y., Tsuda, A., Saito, H., Kudo, I., Kato, S., Kajii, Y., Uematsu, M.
Deep Sea Research II Vol. 56 page： 2899-2917 2009.12
Characteristics of ambient C-2-C-11 non-methane hydrocarbons in metropolitan Nagoya, Japan Reviewed
Saito Shinji, Nagao Ippei, Kanzawa Hiroshi
ATMOSPHERIC ENVIRONMENT Vol. 43 ( 29 ) page： 4384-4395 2009.9
Evidence for the grazing hypothesis: Grazing reduces phytoplankton responses of the HNLC ecosystem to iron enrichment in the western subarctic pacific (SEEDS II) Reviewed
Tsuda Atsushi, Takeda Shigenobu, Saito Hiroaki, Nishioka Jun, Kudo Isao, Nojiri Yukihiro, Suzuki Koji, Uematsu Mitsuo, Wells Mark L., Tsumune Daisuke, Yoshimura Takeshi, Aono Tatsuo, Aramaki Takafumi, Cochlan William P., Hayakawa Maki, Imai Keiri, Isada Tomoshi, Iwamoto Yoko, Johnson William K., Kameyama Sohiko, Kato Shungo, Kiyosawa Hiroshi, Kondo Yoshiko, Levasseur Maurice, Machida Ryuji J., Nagao Ippei, Nakagawa Fumiko, Nakanish Takahiro, Nakatsuka Seiji, Narita Akira, Noiri Yoshifumi, Obata Hajime, Ogawa Hiroshi, Oguma Kenji, Ono Tsuneo, Sakuragi Tomofumi, Sasakawa Motoki, Sato Mitsuhide, Shimamoto Akifumi, Takata Hyoe, Trick Charles G., Watanabe Yutaka W., Wong Chi Shing, Yoshie Naoki
JOURNAL OF OCEANOGRAPHY Vol. 63 ( 6 ) page： 983-994 2007.12
Chemical compositions of marine aerosols meausured during ACE-Asia cruise of R/V Mirai Reviewed
Ippei Nagao, Yukiko Uyama, Mitsuo Uematsu, Atsushi Oki
Journal of Aerosol Research Vol. 19 ( 2 ) page： 122-127 2004
Relationship of NOx and NMHC to photochemical O3 production in a coastal and metropolitan areas of Japan Reviewed
Saito S, Nagao I, Tanaka H
ATMOSPHERIC ENVIRONMENT Vol. 36 ( 8 ) page： 1277-1286 2002.3
大気DMS・エアロゾル・雲核間の相互関係
永尾一平、松本潔、田中浩
月刊海洋 Vol. 34 ( 3 ) page： 214-220 2002
Sunrise ozone destruction found in the sub-tropical marine boundary layer Reviewed
Nagao I, Matsumoto K, Tanaka H
GEOPHYSICAL RESEARCH LETTERS Vol. 26 ( 22 ) page： 3377-3380 1999.11
Individual-particle analyses of coastal Antarctic aerosols Reviewed
Mouri H, Nagao I, Okada K, Koga S, Tanaka H
TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY Vol. 51 ( 3 ) page： 603-611 1999.7
Characteristics of dimethylsulfide, ozone, aerosols, and cloud condensation nuclei in air masses over the northwestern Pacific Ocean Reviewed
Nagao I, Matsumoto K, Tanaka H
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES Vol. 104 ( D9 ) page： 11675-11693 1999.5
Methane sulfonate and non-sea salt sulfate concentrations in aerosols at Syowa, Antarctica Reviewed
Koga, S., Nagao, I., Tanaka, H., Mouri, H.
Journal of the Meteorological Society of Japan Vol. 77 page： 155-164 1999
Seasonal characteristics of organic and inorganic species and their size distributions in atmospheric aerosols over the northwest Pacific Ocean Reviewed
Matsumoto K, Nagao I, Tanaka H, Miyaji H, Iida T, Ikebe Y
ATMOSPHERIC ENVIRONMENT Vol. 32 ( 11 ) page： 1931-1946 1998.6
Time series analysis of atmospheric Rn-222 concentrations and meteorological factors in Japan Reviewed
Yamada K, Iida T, Ikebe Y, Miyachi H, Nagao I, Komura K
RADON AND THORON IN THE HUMAN ENVIRONMENT page： 271-275 1998
Contribution of particulate sulfate and organic carbon to cloud condensation nuclei in the marine atmosphere Reviewed
Matsumoto K, Tanaka H, Nagao I, Ishizaka Y
GEOPHYSICAL RESEARCH LETTERS Vol. 24 ( 6 ) page： 655-658 1997.3
Elemental compositions of individual aerosol particles collected over the Southern Ocean: A case study Reviewed
Mouri H, Nagao I, Okada K, Koga S, Tanaka H
ATMOSPHERIC RESEARCH Vol. 43 ( 2 ) page： 183-195 1997.1
Elemental composition of individual aerosol particles collected from the coastal marine boundary layer Reviewed
Mouri H, Nagao I, Okada K, Koga S, Tanaka H
JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN Vol. 74 ( 5 ) page： 585-591 1996.10
Atmospheric hydrogen peroxide concentration measured at Ogasawara Hahajima Island in the sub-tropical Pacific Ocean Reviewed
Watanabe K, Nagao I, Tanaka H
JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN Vol. 74 ( 3 ) page： 393-398 1996.6
Measurement of Atmospheric Dimethyl sulfide at Syowa Station,Antarctica(Abstract) Reviewed
Nagao, I., Koga, S., Tanaka, H., Aoki, S.
Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology Vol. 9 page： 185 1995
Effect of cloud-droplet size-distribution on radiative properties of clouds.
Ishizaka, Y., Nagao, I.
Progress report ofWCRP Japan page： 73-78 1990
Cooling of water andthe overlying air by melting ice at Lagoon SanRafael in the Northern Patagonia. (共著) Reviewed
Fujiyoshi, Y., Nakajima, C., Inoue, J., Nagao, I.
Bull. Glacier Res. Vol. 4 page： 97-102 1987
Water depth of LagoonSan Rafael, Patagonia. Reviewed
Nakajima, C., Inooue, J., Fujiyoshi, Y., Nagao, I.
Bull. Glacier Res. Vol. 4 page： 103-105 1987
Ecological Study of Bacterial Populations Related to Biogenic Gas Transformation in Marine Environments in "Western Pacific Air-Sea Interaction Study Edited by Uematsu et al.
K. Hamasaki, R. Kaneko, A. Mouri, Y. Tada, N. Kasamatsu-Takasawa, I. Nagao（ Role： Joint author）
TERRAPUB 2014.3
Longitudinal distributions of DMS and pCO2 in the surface seawater and atmosphere in the subarctic North Pacific during the summer cruise of MR07-04 International conference
Ippei Nagao, Akihiko Murata, Yoko Iwamoto, Mitsuo Uematsu
Joint 14th iCACGP Quadrennial Symposium /15th IGAC Science Conference
Factors determining the longitudinal distribution of biogenic sulfur compounds in aerosols over the subarctic North Pacific International conference
Yoko Iwamoto, Akiho Suizu, Ippei Nagao, Mitsuo Uematsu
Joint 14th iCACGP Quadrennial Symposium /15th IGAC Science Conference
みらいMR07-04航海で観測された夏季北部北太平洋における大気と海水のDMSとpCO2の経度分布
永尾一平、村田昌彦、岩本洋子、植松光夫
日本地球惑星科学連合2018年大会
北太平洋亜寒帯域における大気エアロゾル中の生物起源硫黄化合物の経度分布
岩本洋子、水津明穂、永尾一平、植松光夫
日本地球惑星科学連合2018年大会
名古屋港で観測された夏季海陸風のホドグラフの鉛直分布
永尾一平, 菊本雄紀, 河合 慶, 長田和雄, 柴田 隆, 甲斐憲次
日本気象学会2016年度秋季大会
名古屋港で観測された夏季海陸風のホドグラフの鉛直分布
永尾一平, 菊本雄紀, 河合 慶, 甲斐憲次, 柴田 隆, 長田和雄
日本気象予報士会東海支部第211回例会
名古屋港で観測された夏季海陸風のホドグラフの鉛直分布
永尾一平, 菊本雄紀, 河合 慶, 甲斐憲次, 柴田 隆, 長田和雄
日本気象学会中部支部研究会
名古屋港で観測された夏季海陸風のホドグラフの鉛直分布
永尾一平, 菊本雄紀, 河合 慶, 甲斐憲次, 柴田 隆, 長田和雄
日本気象学会2014年度秋季大会
DMSP-related gene shifts in response to phytoplankton blooms International conference
Yingshun Cui, Ayako Mouri, Ryo Kanako, Shukuan Wong, Yuya Tada, Ippei Nagao, Koji Hamasaki
The 5th Taiwan-Korea-Japan International Symposium on Microbial Ecology
Diurnal variations in aromatic hydrocarbons an urban air of Nagoya
非メタン炭化水素放出強度の気温感度
永尾一平, 齊藤伸治
大気化学討論会
Photochemical oxidants and their precursors in an urban air of Nagoya, Japan International conference
I. Nagao
The 2nd Workshop on Climate and Environment between Nanjing University and Nagoya University
Behaviors of photochemical oxidants and their precursors in urban air of Nagoya, Japan International conference
I. Nagao
The 1st Workshop on Climate and Environment between Nanjing University and Nagoya University
連続測定システムによって観測された都市大気中の非メタン炭化水素に関する研究
齊藤伸治、永尾一平、神沢博
第15回大気化学討論会
名古屋の都市大気の芳香族炭化水素の日変化
永尾一平、齊藤伸治
地球惑星科学連合2009合同大会
2007年夏季北部北太平洋の大気と海水DMS分布と大気DMSの酸化条件
永尾一平、岩本洋子、川名佳織、植松光夫、加藤俊吾、村田晶彦
Blue Earth 09（みらいシンポジウム）
夏季北部北太平洋の大気と海水の高濃度DMSについて
永尾一平、岩本洋子、加藤俊吾、村田晶彦、川名佳織、植松光夫
大気化学討論会
フッ素との蛍光反応を利用したDMS濃度の高速測定装置の開発
永尾一平、近藤文義、加藤俊吾、岩本洋子
地球惑星科学連合2008合同大会
北太平洋のDMS放出量の測定
永尾一平、植松光夫
大気化学討論会
Seawater and atmospheric DMS concentrations in the sub-arctic western North Pacific during SEEDS-II International conference
SOLAS Open Science Conference
Seawater and atmospheric DMS concentrations during SEEDS-II (western North Pacific) International conference
Fifteenth annual meeting of PICES
北太平洋の亜寒帯域で行われた鉄散布実験（SEEDS-II)における海水中のDMSの挙動
永尾一平、橋本伸哉、加藤俊吾、梶井克純、植松光夫
第16回大気化学シンポジウム
都市域(名古屋）における非メタン炭化水素の変動特性
齊藤伸治、永尾一平
第46回大気環境学会年会
Sulfur compounds measured during ABC-EAREX05 at Amami-ohshima island
DMS in the atmosphere and surface seawater measured during SEEDS-II cruise International conference
The Asian SOLAS meeting
DMSの大気への放出量の測定
SOLAS国内研究集会
SEEDS-II鉄散布航海での大気中微量気体成分測定
加藤俊吾、亘理真代、梶井克純、植松光夫、永尾一平
第15回大気化学シンポジウム
SEEDS-II航海で観測された大気・海水中の硫黄化合物
永尾一平、植松光夫、加藤俊吾、梶井克純、橋本伸哉
第15回大気化学シンポジウム
Kilo Moanaにおける大気化学観測
東京大学海洋研究所シンポジウム
Springtime distributions of DMS and related species in the surface seawater and atmosphere over the western North Pacific International conference
SOLAS Science Meeting 2004
Seasonal and diurnal characteristics of ambient non-methane hydrocarbons at Nagoya, and urban site in Japan International conference
8th International Global Atmospheric Chemstry Conference
Spring time distributions of DMS and related species in the surface seawater and atmosphere over the western North Pacific International conference
8th International Global Atmospheric Chemistry Conference
都市における冬季から春季の非メタン炭化水素類の濃度変動特性
齊藤伸治、永尾一平
第10回大気化学討論会
Observation strategy for atmospheric gas and aerosol International conference
Japan-US workshop on SEEDS-II experiment
Measurement of O3, NOX, VOCs and SO2 over the polluted sea area in Japan International conference
8th International Conference on Atmospheric Sciences and Applications to Air Quality (ASAAQ2003)
Comparison of oceanic DMS emission with the other sulfur emissions over the western North Pacific and East Asia International conference
8th International Conference on Atmospheric Sciences and Applications to Air Quality (ASAAQ2003)
西部北太平洋からのDMSの放出量の見積もりー他のソースの硫黄化合物との比較
永尾一平、田中浩
第13回大気化学シンポジウム
西部北太平洋における海水と大気のDMSとその関連物質の分布
永尾一平、加藤俊吾、宇山悠紀子、梶井克純、植松光夫、田中浩
みらいシンポジウム
雲を作るー凝結核
名古屋市民大学講座
Spring time distributions of DMS and related species in the surface seawater and atmosphere over the western North Pacific International conference
3rd International Symposium on Biological and Environmental Chemistry of DMS(P) and Related Compounds
Relationship of NOX and NMHC to photochemical O3production in coastal and metropolitan areas of Japan International conference
CACGP/IGAC Conference
西部北太平洋における大気中、海水中のDMS分布―みらいMR01K02航海の結果―
永尾一平、田中浩、植松光夫
日本気象学会秋季大会
都市と沿岸におけるオゾンとオゾン前駆物質の関係（II）－Ozone Isopleth Diagram描画の試み
齊藤伸治、永尾一平、田中浩
日本気象学会春季大会(東京)
都市と沿岸におけるオゾンとオゾン前駆物質の関係（I）－季節変化と日変化
齊藤伸治、永尾一平、田中浩
日本気象学会春季大会（東京)
春季、夏季の北太平洋のDMSとDMSPの分布とDMSの放出量―KM04-15, KH06-2, MR06-04, KT07-7, MR07-04の結果から―
名古屋市のオキシダント濃度に見られる2，3年変動について
Seasonal variations in ozone and water vapor in the subtropical marine boundary layer over the western North Pacific
都市域における光化学オゾン生成メカニズム解明に関する研究
Springtime distributions of DMS and related species in the surface seawater and atmosphere over the western North Pacific
伊勢湾～四国海盆間の大気と海水中のDMSの分布
小笠原諸島母島におけるエアロゾル・ガスの長期観測
Observation of sulfur compounds in marine atmosphere, Ogasawara
Observation of atmospheric sulfur compounds at Syowa station, Antarctica
海洋鉄散布実験における海洋表層・低層大気での生物応答
2004
国内共同研究
海洋生物起源硫黄化合物の高速測定方法の開発とその応用
2002.11
住友財団
Grant type：Competitive
フッ素との蛍光反応を用いた海面・陸面からの硫化ジメチルフラックスの測定
2009.4 - 2012.3
科学研究費補助金 基盤研究C 課題番号21510012
永尾一平
Authorship：Principal investigator
Measurements of dimethylsulfide(DMS) fluxes from sea and land surfaces by using fluorine-induced chemiluminescence technique
Grant number：21510012 2009 - 2011
NAGAO Ippei
Authorship：Principal investigator
Grant amount：\4680000 （ Direct Cost: \3600000 、 Indirect Cost：\1080000 ）
Dimethyl sulfide(DMS) produced by marine phytoplankton is oxidized into sulfate aerosols and cloud condensation nuclei(CCN) in the atmosphere. Accurate measurement of the sea-air DMS flux by such as eddy correlation(EC) method is required to study the impact of DMS on the atmospheric chemistry and radiative processes. In this study, down-sized device for the EC method using fluorine-induced chemiluminescence was developed in order to be installed on the top of foremast of research vessels and to measure the DMS concentration fluctuation with high time resolution. After several performance tests, several observations in the marine air were carried out over the western North Pacific.
東シナ海上でブラウン雲が雲粒核作用を通して下層雲の微物理学的性質に与える影響
2007 - 2008
科学研究費補助金 基盤研究C
石坂隆
Authorship：Coinvestigator(s)
Effects of Brown Cloud on Microphysical Properties of Lower Clouds by the activation of Cloud Condensation Nuclei over the East China Sea
Grant number：19510016 2007 - 2008
ISHIZAKA Yutaka
Authorship：Collaborating Investigator(s) (not designated on Grant-in-Aid)
微量気体成分の海面乱流フラックス直接測定法の開発
2006 - 2010
科学研究費補助金 特定領域研究「海洋表層・大気下層間の物質循環リンケージ」
塚本修
Authorship：Coinvestigator(s)
Direct measurement of trace gas air-sea fluxes
Grant number：18067010 2006 - 2010
TSUKAMOTO Osamu
Authorship：Coinvestigator(s)
In the global warming, carbon dioxide(CO2) plays an important role and its transport through air-sea interface should be quantitatively evaluated. We have developed on-board eddy-covariance system including energy and trace gas fluxes. Air-sea CO2 flux is leas than an order of magnitude smaller than vegetation over land and should be evaluated very accurately. Eddy-covariance measurement of DMS flux is also tried as well as successful vertical profile method.
Study on processes of dimethyl sulfide production in seawater, its emission to the marine atmosphere and formation of sulfate aerosol
Grant number：16204044 2004 - 2007
UEMATSU Mitsuo
Authorship：Coinvestigator(s)
For simple and quick bulk chemical analysis of suspended particles in seawater, a devise with energy dispersive X-ray fluorescence spectrometer that specialized for light elements was developed. A fast measurement system of atmospheric DMS concentrations based on the fluorine-induced chemiluminescence was also developed and succeeded to employ in the marine air to apply the eddy correlation method on ship board.
Our shipboard simultaneous measurements of air and sea were carried out as a part of the iron fertilization experiment in the western subarctic North Pacific in the summer (R/V Hakuho-maru), at the Off Sanriku region during the high primary productive period in the spring (R/V Tansei-maru), and survey along 47°N from western to eastern subarctic North Pacific in summer (R/V Mirai). During the phytoplankton bloom caused by iron fertilization, the concentrations of CH_3Br increased. A linear correlation was observed between the concentrations of 19'-hexanoyloxyfucoxanthin, which is a biomarker of several prymnesiophytes, and CH_3Br in the seawater. After fertilization, the air-sea flux of CH_3Br inside the patch changed from influx to efflux from the ocean.
Dimethylsulfide, halomethanes, and isoprene in the water and air measured in the western subarctic Pacific revealed that phytoplankton speciation and physiological differences are probably related to the differences of the distribution of VOCs in air and seawater. In the front region of Tsushima warm current, high concentrations of VOCs such as CH_3Br, CH_2I_2 and CH_2CII in seawater were correlated with in atmospheric concentrations. Results of the longitudinal transect along the 47°N, the highest DMS concentrations of seawater were observed between 180°E and 140V corresponding increases in the atmospheric DMS concentrations. At the same time, the concentration of particulate Ca in seawater increased with DMS concentration in seawater. It suggested that detritus of coccolithophorids with CaCO_3 test, reflect DMS concentration in seawater.
Biogeochemical responses of the surface ocean and the lower atmosphere during the meso-scale iron enrichment experiments
Grant number：16201003 2004 - 2007
TSUDA Atsushi
Authorship：Coinvestigator(s)
The Southern Ocean, the eastern equatorial Pacific and subarctic Pacific are recognized as HNLC (High Nutrient Low Chlorophyll) oceans, where depletion of iron is an limiting factor of primary production. Mesoscale iron-fertilization experiments have been conducted from 1993 to test the iron hypothesis and for future geoengineering as carbon sequestration. In the North Pacific, three experiments (SEEDS, SERIES and SEEDS II) have been carried out by A. Tsuda and his colleagues from 2001. This Grant-in-Aid supported the SEEDS II cruises, and detailed analysis and synthesis of other two experiments. Furthermore, preliminary bottle incubation experiments in which iron and phosphate were added, were carried out in the subtropical Pacific to test the feasibility of future mesoscale experiments. Data analysis and synthesis of these experiments have been done through a domestic workshop, domestic symposium, international workshop, international symposium, PICES-IFEP meeting and SOLAS-related meetings. The main conclusion of our experiments is iron-fertilization to HNLC waters enhance the primary production but the magnitude of phytoplankton accumulation, the timing of the bloom and dominant phytoplankton species varies depending on the iron concentration, depth of surface mixed layer, zooplankton biomass and the season. More importantly, the efficiency of carbon sequestration by sinking of particulate matter was not high as what have been expected, because of respiration of microbial organisms. These results importantly affect on the formation of the international consensus that iron-fertilization is an immature technology as carbon sequestration. On the other hand, iron had almost no effect in the subtropical experiments, but these experiments contributed for the accumulation of the basic knowledge of the subtropical ecosystems and formed a groundwork of SOLAS-related project (Grant-in-Aid for Scientific Research on Priority Areas: Linkages in Biochemical Cycles between Surface Ocean and Lower Atmosphere).
Study on the mechanisms of the 2〜3 year variation in the increasing trend of oxidant in the urban air
Grant number：16510006 2004 - 2006
NAGAO Ippei
Authorship：Principal investigator
Grant amount：\3800000 （ Direct Cost: \3800000 ）
(1) Collection and analyses of datasets for atmospheric pollutants and meteorological elements
We obtained the atmospheric pollutants datasets of Aichi prefecture from 1991 to 2001 as well as the meteorological datasets at Nagoya. We identified the period when this variation was well defined (1985-1998). Since temporal variation in the oxidant concentration in Nagoya was closely related with that in ozone (O_3), this 2-3 year variation in oxidant can be regarded as that in O_3 in Nagoya. In addition, the precursors of O_3 such as NO_x and NMHC (total) were also collected and analyzed to find the similar variations in their trends.
(2) Analyses of 03 dataset in the free troposphere over Japan and in the marine boundary layer over the western North Pacific
Surface O_3 concentration is controlled by in-situ photochemical reactions and transport of the O_3 in the overlying free troposphere. In summer, O_3 in Nagoya can be also affected by the transport of O_3 from the North Pacific. Therefore we analyzed the behaviors in the O_3 concentrations in the free troposphere and at the Ogasawara Island between 1994 and 1997.
(3) Measurements of C_2~C_<11> NMHCs in Nagoya
To understand the variation in the photochemical processes in O_3 production, it is required to variation in the individual component of NMHCs. We developed the continuous measurement system of each NMHC component (C_2-C_<11>) with GC/FID and air sampling device, and obtained the NMHC data fro C_2-C_<11>. In particular, the ratio of NMHC/NOx increased in spring and summer could be explained by an increase emission of biogenic NMHC (isoprene), and this result will be helpful to investigate the mechanism.
We have not yet revealed the mechanisms of 2-3 year variation in oxidant in urban air. Now we are investigating the differences in the processes between the well-defined periods and the not defined periods to reveal the factors controlling this variation.
都市大気オキシダントの増加トレンドに見られる２，３年変動のメカニズムの研究
2004
科学研究費補助金 基盤研究（Ｃ），課題番号：16510006
永尾 一平
Authorship：Principal investigator
海水中の硫化ジメチル生成、大気への放出、洋上硫酸エアロゾル形成に至る過程の解明
2004
科学研究費補助金 基盤研究A(2)
植松光夫
Authorship：Coinvestigator(s)
海洋・大気間の物質相互作用研究計画（IGBP/SOLAS)の準備調査
2004
科学研究費補助金 基盤研究C
植松光夫
Authorship：Coinvestigator(s)
植物起源炭化水素による汚染大気中のオゾン生成最適化に関する研究
2002.10
科学研究費補助金 基盤研究C 課題番号14580549
永尾一平
Authorship：Principal investigator
Study on optimum condition for photochemical ozone production caused by non-methane hydrocarbons emitted by vegetation in the polluted air
Grant number：14580549 2002 - 2003
NAGAO Ippei
Authorship：Principal investigator
Grant amount：\2600000 （ Direct Cost: \2600000 ）
In order to investigate the contribution of NMHCs emitted by vegetation to photochemical production of ozone in the polluted urban air, automatic continuous measurement system for NMHCs (C_2-C_<10>) which are indispensable for photochemical production of ozone was constructed. Continuous measurement of NMHCs was set up from last December particularly focusing on the seasonal variations in concentrations of isoprene, α-pinene and β-pinene, and fraction of these gases to the total NMHC. In parallel, measurements of ozone, nitrogen oxides (NO, NO_2) and solar radiation (global solar radiation, ultra violet A and B) were also set up at the same time. These data were recorded in the personal computer to enable to manipulate various analyses.
Based on the analysis of these data sets, seasonal variations both in ozone and its precursors were investigated, and relationship between the daytime increase of ozone and concentrations of precursors of ozone (NMHCs, NO_X) was explored. In addition, relative contribution of biogenic NMHCs to total NMHC was also studied.
Since it was last December that whole system was ready for continuous observation, enough data has not yet been obtained to discuss these issues. These measurements are going on, and photochemical box model approach will be carried out including observed data to study the relative contribution of biogenic NMHCs to the photochemical production of ozone.
Study on atmosphere-ocean interaction through marine biogehic sulfur compounds (dimethylsulfide)
Grant number：13480156 2001 - 2003
MASUZAWA Toshiyuki
Authorship：Coinvestigator(s)
With support of this grant-in-aid, we performed following terms ; (1) development of automatic measurement system of atmospheric DMS, (2) measurement of DMS in the seawater and atmosphere over the western North Pacific in spring and winter, (3) setting up an observation station at Hachijojima Island to obtain time series of atmospheric DMS. In addition, analysis of transport pathway of air parcel by an isentropic trajectory Analysis was also performed, and we analyzed aerosol chemical compositions to detect the Kosa particle and oxidation products of DMS in the marine air. Moreover to obtain the distribution of chlorophyll-a in this area, remote sensing chlorophyll-a data derived from SeaWiPs satellite was analyzed.
Sea-air DMS flux was estimated with DMS concentrations in the surface seawater and atmosphere, SST and surface wind speed. Relationship between sea-air DMS flux and atmospheric DMS abundance was analyzed.
As a result of analysis, seawater DMS in spring was higher than in December by a factor of 1.5〜2 in this area. Chlorophyll-a concentration derived from SeaWiES was also higher in April than in December. These results were due to an increase of marine production in spring. In addition, high MSA and non sea-salt sulfate concentrations in aerosol were observed when air parcel was transported from the elevated chlorophyll-a area within 1〜2 days. According to column model approach, these elevated concentrations in aerosol were mainly due to the, high emission of DMS in the elevated chlorophyll-a area and rapid oxidation of DMS under the high ozone condition. Although Kosa events were observed in these observations, we did not succeed getting enough data to show any sign of impact of Kosa on marine production.
海洋起源の硫黄化合物（硫化ジメチル）からみた大気ー海洋相互作用の研究
2001
科学研究費補助金 基盤研究B
田中浩、増澤敏行
Authorship：Coinvestigator(s)
木星エウロパの氷盤-液体海洋重層構造の形成維持機構の室内実験
Grant number：11874063 1999 - 2000
萌芽的研究
田中 浩
Authorship：Coinvestigator(s)
木星の衛星エウロパには厚い氷盤の下に液体の水の層が存在することがほぼ確実視されている。これを実験的に確かめるために、平成11年度は、冷凍実験室のなかで熱対流が氷を融解する過程、および氷層と水層の最終平衡状態を実験的に調べた。平成12年度は、種々の制約によって室内実験では十分確認できなかった部分を追試するとともに、氷.水2層構造の形成条件をパラメータを変化させることによって可能なかぎり一般性をもって導出することを数値実験によって試みた。
パラメータとして、レイリー数(Ra)と上下の温度差をとった。
(1)Ra=100,000の場合:上下の温度差を変えて実験すると、最終的には氷対水の厚さはおおむね1:9の状態に落ち着いた。しかし、氷と水の厚さの比が1:1になるケースも少ないながら存在した。水層の中では不規則な熱対流が活動しており、この先突然状態変化を起こすことも考えられる。
(2)Ra=10,000の場合:(1)の場合と状況は変わりない。
このように、不規則的に層の厚さの比が異なって出現するというカオス的状態が見られたのは興味ある結果である。詳細に追求する必要がある。
Aerosol and cloud formation processes induced by sulfur compounds of marine biospherical origin
Grant number：05402067 1993 - 1995
Grant-in-Aid for General Scientific Research (A)
TANAKA Hiroshi
Authorship：Coinvestigator(s)
An observation station facing the Pacific ocean was set up in Ogasawara Hahajima island by 1000 km south to main land of Japan.
Constructing automatic continuous measurement system to measure atmospheric dimethylsulfide (DMS), ozone and radon, and data communication system to check the measurement condition, almost continuous data sampling for one year has been conducted. Members of our group went to Ogasawara Hahajima island for ten days each month and collected aerosols and cloud condensation nuclei (CCN). These samples were analyzed in laboratories at Nagoya university. In addition, using meteorological objective analysis data, isentropic backward trajectory analysis was carried out to look for the origins of the materials.
It is concluded that, even at 100 km south to main land of Japan and Eurasian continent, Ogasawara Hahajima island undergoes influence of continental and/or anthropogenic materials under continental air mass in winter. There found a good correlation between concentration of CCN and nss-sulfate in the marine atmosphere. The precursors of this nss-sulfate would be DMS especially under maritime air mass, and anthropogenic sulfur dioxide under continental air mass.
気候科学セミナー
2020
気候科学セミナー
2019
大気水圏フィールドセミナーI
2019
大気水圏フィールドセミナーI
2018
気候科学セミナー
2018
大気水圏フィールドセミナーI
2017
気候科学セミナー
2017
大気水圏フィールドセミナーI
2016
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2016
大気水圏フィールドセミナーI
2015
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2015
大気水圏フィールドセミナーI
2014
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2014
大気水圏フィールドセミナーI
2013
大気水圏フィールドセミナーI
2012
大気水圏フィールドセミナーII
2012
大気水圏フィールドセミナーI
2011
大気水圏フィールドセミナーII
2011
気候科学セミナー
2010
地球惑星科学セミナーI
2010
大気水圏フィールドセミナーI
2010
大気水圏フィールドセミナーII
2010
気候科学セミナー
2009
気候科学セミナー
2008
大気水圏フィールドセミナー
2006
地球圏環境科学
2007.4 - 2008.3 （中部大学）
環境物理学
2007.4 - 2008.3 （名古屋産業大学）
地球圏環境科学
2006.4 - 2007.3 （中部大学）
環境物理学
2006.4 - 2007.3 （名古屋産業大学）
環境物理学
2005.4 - 2006.3 （名古屋産業大学）
地球圏環境科学
2005.4 - 2006.3 （中部大学）
大気水圏科学演習
2002.4 - 2003.3 （愛知教育大学）
地学II
2001.4 - 2002.3 （愛知教育大学）
地学II
2000.4 - 2001.3 （愛知教育大学）
地学II
1999.4 - 2000.3 （愛知教育大学）
地学II
1998.4 - 1999.3 （愛知教育大学）
オゾン、日の出直後、大量消滅 Newspaper, magazine
神戸新聞（夕刊） 1998.12
日の出後にオゾン破壊 Newspaper, magazine
中部経済新聞 1998.12
日の出直後にオゾン壊れるー地球温暖化原因物質解明に光明？ー Newspaper, magazine
福島民報 1998.11
日の出直後、オゾン破壊ー海塩粒子が関与かー Newspaper, magazine
秋田さきがけ 1998.11
日の出直後にオゾン破壊 Newspaper, magazine
神奈川新聞 1998.11
