1998 Fiscal Year Final Research Report Summary
Tropospheric ozone chemistry over the tropical Pacific
| Project/Area Number |
09041105
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Field Research |
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| Research Field |
Space and upper atmospheric physics
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| Research Institution | Nagoya University |
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Principal Investigator |
KONDO Yutaka Nagoya Univ., Solar-Terre.Env.Lab., Professor, 太陽地球環境研究所, 教授 (20110752)
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| Co-Investigator(Kenkyū-buntansha) |
KAWAMURA Kimitaka Hokkaido Univ., Dep.of Science, Professor, 大学院・理学研究科, 教授 (70201449)
NISHI Noriyuki Kyoto Univ., Dep.of Science, Research Associate, 大学院・理学研究科, 助手 (00222183)
KITA Kazuyuki Tokyo Univ., Dep.of Science, Research Associate, 大学院・理学系研究科, 助手 (30221914)
ZHAO Yongjing Nagoya Univ., Solar-Terre.Env.Lab., Research Associate, 太陽地球環境研究所, 助手 (00303595)
KOIKE Makoto Nagoya Univ., Solar-Terre.Env.Lab., Associate Professor, 太陽地球環境研究所, 助教授 (00225343)
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| Project Period (FY) |
1997 – 1998
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| Keywords | tropospheric ozone / tropospheric reactive nitrogen / Western Pacific / biomass burning / stratosphere |
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| Research Abstract |
Ozone and reactive nitrogen play a critical role in the tropospheric photochemistry by controlling the oxidation capacity in the atmosphere. In this study, we made aircraft measurements over the equatorial western Pacific and around the US continent to investigate these issues.
In 1997, we participated in the NASA' s aircraft measurements made at middle and low latitudes near the US continent between July and November using NASA DC-8 aircraft. We successfully measured reactive nitrogen species (NO and NOy) whole through the mission. By analyzing these data with co-investigators including the meteorologists and modelers, a lot of new knowledge on the sources of reactive nitrogen in the upper troposphere was obtained. Impact on the ozone production rate was also quantitatively estimated.
In 1998, we made aircraft measurements around Indonesia region using Japanese research aircraft. Five intensive flights were made over and near Sumatra Is. and Kalimantan Is., the region where biomass burning was occurring. Studies with co-investigators on these data show that chemical signature of biomass burning and the impact from it to the ozone chemistry in the equatorial region.
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Research Products
(12 results)
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[Publications] Y.Kondo, M.Koike, H.Ikeda, B.E.Anderson, K.E.Brunke, Y.Zhao, Kita, T.Sugita, H.B Singh, S.C.Liu, A.Thompson, G.L.Gregory, R.Shetter, G.Sachse, S.A.Vay, E.V.Browell, and M.J.Mahoney: "Impact of aircraft emissions on NO_x in the lowermost stratosphere at northern midlatitudes" Geophysical Research Letters.
Description
「研究成果報告書概要(欧文)」より
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[Publications] M.Koike, Y.Kondo, G.L.Gregory, B.E.Anderson, G.W.Sachse, D.Blake, H B Singh, A.Thompson, K.Kita, Y.Zhao, T.Sugita, R.Shetter, H.Ikeda, S.C.Liu, and L.Jeagle: "Impact of aircraft emissions on reactive nitrogen over the North Atlantic Flight Corridor region" J.Geophys.Res.
Description
「研究成果報告書概要(欧文)」より
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[Publications] K.Kita, S.Matsukawa, Y.Kondo, M.Koike, H.Ikeda, Y.Zhao, T.Sugita, H.B.Singh, R.W.Talbot, D.R.Blake, G.Sachse, G.L.Gregory, W.H.Brune, L.Jaegle, D.J.Jacob, J.Maloney, and H.E.Fuelberg: "Distribution and partitioning of reactive nitrogen observed in the upper troposphere over the Atlantic Ocean and North America in autumn" J.Geophys.Res.
Description
「研究成果報告書概要(欧文)」より
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[Publications] Kondo, Y., M.Koike, S.Kawakami, H.B.Singh, R.Talbot, H.Nakajima, G.L.Gregory, D.R.Blake, G.W.Sachse, and J.T.Merrill: "Profiles and partitioning of reactive nitrogen over the Pacific Ocean in winter and early spring" J.Geophys.Res.102,28,405-28,424. (1997)
Description
「研究成果報告書概要(欧文)」より
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[Publications] Kondo, Y., S.Kawakami, M.Koike, D.W.Fathey, H.Nakajima, Y.Zhao, N.Toriyama, M.Kanada, G.W.Sachse, and G.L.Gregory: "The performance of an aircraft instrument for the measurement of NOy" J.Geophys.Res.102,28,663-28,671. (1997)
Description
「研究成果報告書概要(欧文)」より
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[Publications] Koike, M., Y.Kondo, S.Kawakami, H.Nakajima, G.L.Gregory, G.W.Sachse, H.B.Singh, E.V.Browell, J.T.Merrill, and R.E.Newell: "Reactive nitrogen and its correlation with O_3 and CO over the Pacific in winter and early spring." J.Geophys.Res.102,28,385-28,404. (1997)
Description
「研究成果報告書概要(欧文)」より
