アラスカ州ノーススロープ群上空の氷晶雲の残差粒子の物理化学特性 – ArcticCARE-2017での挑戦

Material type: 文書・図像類

Author: 平沼, 成基

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Publication date: 2016-12-22

Material Format: Paper

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Note (General)：: The climate impact of ice-nucleating particles (INPs) on global scale has been recently accented by their diversity and efficient freezing ability. Ho...

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Paper

Material Type: 文書・図像類
Title: アラスカ州ノーススロープ群上空の氷晶雲の残差粒子の物理化学特性 – ArcticCARE-2017での挑戦
Author/Editor: 平沼, 成基
Author Heading: 平沼, 成基
Publication Date: 2016-12-22
Publication Date (W3CDTF): 2016-12-22
Alternative Title: Chemical and physical characterization of ice residuals from the North Slope of Alaska during ISDAC2008 – Challenges in ArcticCARE-2017
Text Language Code: jpn
Subject Heading: アラスカ
残差粒子
氷晶雲
Alaska
ice residuals
Target Audience: 一般
Note (General): The climate impact of ice-nucleating particles (INPs) on global scale has been recently accented by their diversity and efficient freezing ability. However, their representation in atmospheric models is limited in part due to our incomplete knowledge of their composition, abundance and associated sensitivity to heterogeneous ice nucleation.To fill given knowledge gap, a unique/rich set of ice crystal residual samples derived from a variety of cloud residual samples obtained through the Indirect and Semi-Direct Aerosol Campaign (ISDAC) was investigated. ISDAC was held over the North Slope of Alaska for three weeks in April 2008, in which a total of 27 flights (~45 hours of flight) was carried out, to comprehensively study the Arctic cloud formation with collaboration among 16 international groups that were funded through the U.S. DOE agencies. Here, I will present the nanoscale surface morphology and elemental/molecular composition of ice crystal residuals as well as that of total aerosol samples from the ISDAC activity to identify and classify any specific mineral and organic inclusions that may have promoted nucleation of ice. Comparing total aerosols to residuals will shed light on the composition and abundance of certain particle types in INPs. Some challenging aspects of ice residual research in upcoming ArcticCARE-2017 in Ny-Ålesund will also be introduced and discussed.
Polar Meteorology and Glaciology Group seminar / 気水圏コロキウム日時：12月22日（木）15:00-16:00 場所：C301（3階セミナー室）
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 国立極地研究所 : 国立極地研究所学術情報リポジトリ