The SCALE-LETKF system and its early applica9ons Guo-Yuan Lien , - - PowerPoint PPT Presentation

The SCALE-LETKF system and its early applica9ons

Guo-Yuan Lien, Takemasa Miyoshi, Seiya Nishizawa, Ryuji Yoshida, Hisashi Yashiro, Sachiho Adachi, and Hirofumi Tomita

RIKEN Advanced Institute for Computational Science, Japan

October 9, 2015

Introduction of myself

Guo-Yuan Lien

• 2014-15 Postdoctoral researcher, RIKEN AICS
• 2014 Ph.D. in Atmospheric and Oceanic Science
• University of Maryland, College Park, Maryland
• Advisors: Profs. Eugenia Kalnay and Takemasa Miyoshi
• 2009 M.S. in Atmospheric Sciences
• Na9onal Taiwan University, Taipei, Taiwan
• Advisor: Prof. Chun-Chieh Wu
• Research topics:
• Assimila9on of the global satellite precipita9on data.
• Data assimila9on for tropical cyclone ini9aliza9on and forecasts.

We coupled the LETKF to a new model: SCALE.

• Wide usage of LETKF:
• Global models:
• SPEEDY (Miyoshi 2005)
• SPEEDY-C (Kang et al. 2011, 2012)
• Earth simulator (Miyoshi and Yamane 2007)
• GFS (Szunyogh et al. 2008; Lien et al. 2014, 2015)
• JMA GSM (Miyoshi et al. 2010)
• NICAM (Terasaki et al. 2015)
• MOM (Penny et al. 2013)
• Regional models:
• JMA NHM (Miyoshi and Aranami 2006; Kunii 2014)
• WRF (Miyoshi and Kunii 2012)
• SCALE-LETKF (Lien et al., in prepara9on)
• Others:
• Mars model (Greybush et al. 2012)

… and so on.

Goals:

Real-time, high-resolution, short-term rainfall prediction