Videosonde-observed graupel in different rain systems during Pre-YMC Project

Kenji Suzuki, Katsuhiro Nakagawa, Tetsuya Kawano, Shuichi Mori, Masaki Katsumata, Fadli Syamsudin, Kunio Yoneyama

研究成果: Contribution to journalArticle査読

2 被引用数 (Scopus)

抄録

Videosonde observations were conducted at the southwestern coastal region of Sumatra Island, Indonesia, as part of a pilot field campaign of the Years of the Maritime Continent project (Pre- YMC), to investigate the role of solid hydrometeor for precipitation processes in clouds. Videosondes were launched into three types of clouds: convective and stratiform clouds, and a thick upper stratiform cloud with shallow convection at lower level. A quantitative evaluation of the graupel shape data obtained from the videosondes showed different graupel formations in different rain systems. For the typical stratiform cloud, almost no graupel was observed. In contrasts, for the thick upper stratiform clouds with shallow convection, large numbers of ice crystals in the upper layer suggested to act as embryos and form a lot of graupel with the riming of the supercooled droplets that was supposed to be provided from the shallow convection. On the other hand, for the convection case, the videosonde observed spherical graupel just above the freezing level. This suggested that frozen drops acting as embryos formed spherical graupel, which were uplifted by the strong updraft in the convective cloud, and were different from the generally irregular-shaped graupel in the thick upper stratiform cloud.

本文言語英語
ページ(範囲)148-152
ページ数5
ジャーナルScientific Online Letters on the Atmosphere
14
DOI
出版ステータス出版済み - 2018

All Science Journal Classification (ASJC) codes

  • 大気科学

フィンガープリント

「Videosonde-observed graupel in different rain systems during Pre-YMC Project」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル