STUDIES OF FORMATION MECHANISM OF ACID SNOW PARTICLES ACOODING TO THEIR FORMATION PROCESSES

酸雪颗粒形成机理及其形成过程研究

• 批准号: 07640564
• 负责人: ENDOH Tatsuo
• 金额: $ 1.41万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07640564/
• 关键词: acid snow; aerosol; depositional growth; SO42-; graupl; rimed crystal; NO3-; riming growth; 酸性雪; 雪片; レーダー

Case studies of chemical analysis of solid precipitation were carried out at sites on the outskirts and central part of Sapporo City, Japan to investigate the difference in precipitation chemistry owing to the mechanism by which snow particles grow, i.e.by vapor deposition or by riming. Even in vapor depositional growth, the samples were found to be acidic. NO_3-and nss-Cl-contributed to the acidification. In the samples of riming growth, the nss-SO^2_-concentration was considerably high. Snow samples from the site in the central city area were less acidic due to the higher concentration of nss-Ca^<2+> in the early period of snowfalls.

在日本札幌市的郊区和中部进行了固体降水化学分析的个案研究，以调查由于雪颗粒生长的机制（气相沉积或雾凇）而导致的降水化学差异。i.e.by即使在气相沉积生长中，发现样品是酸性的。NO_3 ~-和nss-Cl ~-对酸化有贡献。在有边生长的样品中，nss-SO^2_-浓度相当高。中心城市地区的雪样酸性较低，这是因为降雪初期nss-Ca^<2+>浓度较高。

项目成果

Tuneya Takahashi: "Influence of the growth mechanism of snow particles on their chemical composition" Atmospheric Environment. 30. 1683-1692 (1996)

Tuneya Takahashi：“雪颗粒的生长机制对其化学成分的影响”大气环境。

T.Takahashi: "Influence of the growth mechanism of snow particles on their chemical composition" Atmos.Environ.(in press).

T.Takahashi：“雪颗粒的生长机制对其化学成分的影响”Atmos.Environ。（正在印刷中）。

Tsuneya Takahashi: "Influence of the growth mechanism of snow particles on their chemical composition" Atmospheric Environment. Vol.30. 1683-1692 (1996)

Tsuneya Takahashi：“雪颗粒的生长机制对其化学成分的影响”大气环境。

Tsuneya Takahashi: "Influence of the growth mechanism of snow particles on their chemical composition" Atmospheric Environment. 30,10/11. 1683-1692 (1996)

Tsuneya Takahashi：“雪颗粒的生长机制对其化学成分的影响”大气环境。