Stalled improvement in a numerical weather prediction model as horizontal resolution increases to the Sub-Kilometer Scale

Junshi Ito, Syugo Hayashi, Akihiro Hashimoto, Hideaki Ohtake, Fumichika Uno, Hiromasa Yoshimura, Teruyuki Kato, Yoshinori Yamada

研究成果: Article査読

14 被引用数 (Scopus)

抄録

This study evaluated the performance of a regional weather prediction model. The horizontal resolution is increased to the sub-kilometer scale in a series of experiments over areas of Japan through the summer or winter seasons of 2015-2016. The performance improves less when increasing the horizontal resolution from 2 km to 1 km or 500 m than it does from 5 km to 2 km, especially when topography and ice microphysics are less relevant. Although the velocity and magnitude of updrafts, cloud size, and convection in the boundary layer indeed change with the horizontal resolution, these differences turn out to have little impact on the model performance.

本文言語English
ページ(範囲)151-156
ページ数6
ジャーナルScientific Online Letters on the Atmosphere
13
DOI
出版ステータスPublished - 2017
外部発表はい

ASJC Scopus subject areas

  • 大気科学

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