Elucidation of release mechanism of gas and particles from snow surface
| Project/Area Number |
24651015
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
TAKENAKA Norimichi 大阪府立大学, 工学(系)研究科(研究院), 教授 (70236488)
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| Research Collaborator |
NORO Kazushi
Duong Huu Huy
Trinh Thai Ha
KITADA Kodai
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 硝酸 / 積雪 / エアロゾル / 揮散 / 光分解 / 塩化水素 / アンモニア / 雪の均一化 / 雪氷 / 窒素酸化物 / 亜硝酸ガス / 大気雪氷物質交換 / 光化学 / 氷化学 / 南極 / 硝酸イオン / 雪氷コア |
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| Outline of Final Research Achievements |
We observed NOx produced by irradiation of UV light to snow sample including nitrate. This is probably due to that concentration of nitrate becomes high in snow by evaporating water vaper from warm part to colder part formed by temperature gradiant in snow cover. The release of NOx is expected to affect on photochemistry and the release of nitric acid affects on the aerozole composition in the Antactic atmosphere. On the other hand, photochemical reaction of chloride was not observed, but evaporation loss of chloride (HCl gas) was observed. We also observed the possibility of the reaction of nitrate with iodide, but the reproducibilty was not good. Further research will be required for the reaction. Finally, in this research, we establised the homogenization method of snow sample.
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Report
(4 results)
Research Products
(33 results)
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[Presentation] 雪氷からの硝酸ガスの放出2014
Author(s)
竹中規訓
Organizer
第16 回 南極エアロゾル研究会
Place of Presentation
国立極地研究所（東京都立川市）
Year and Date
2014-07-28 – 2014-07-29
Related Report
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