Chemical compositions of soluble inclusions in cold snowfall

2015 Fiscal Year Final Research Report

• Project/Area Number: 26610147
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Hokkaido University
• Principal Investigator: Iizuka Yoshinori 北海道大学, 低温科学研究所, 助教 (40370043)
• Co-Investigator(Kenkyū-buntansha): NAKAMURA Kazuki 防災科学技術研究所, イノベーションハブ推進室, 室長補佐 (50725231)
• Co-Investigator(Renkei-kenkyūsha): Sato Tomonori 北海道大学, 大学院地球環境科学研究院, 准教授 (10512270)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 降雪 / エアロゾル / 個別微粒子 / 化学組成

Outline of Final Research Achievements

In this study, we had aerosol and snow precipitation sampling at same time in Tomamu basin, and then measured chemical compositions of solid particles both of insoluble and soluble materials. This study produce a first approach that direct comparison of chemical components between dry and wet depositions at same time in same place. We will discuss the difference of chemical components between dry and wet depositions.
As a result, the chemical components between inclusions in snow and aerosols are diffrent. Especially, inclusions in snow have many NaCl not but aerosols have less NaCl particles. Also, inclusions in diamond dust have less NaCl. These diffrences are probably due to the diffrence of origins of inclusion.

Free Research Field

雪氷学