Graphical Abstract
Ishii, M., H. Kamahori, H. Kubota, M. Zaiki, R. Mizuta, H. Kawase, M. Nosaka, H. Yoshimura, N. Oshima, E. Shindo, H. Koyama, M. Mori, S. Hirahara, Y. Imada, K. Yoshida, T. Nozawa, T. Takemi, T. Maki, and A. Nishimura, 2024: Global historical reanalysis with a 60-km AGCM and surface pressure observations: OCADA. J. Meteor. Soc. Japan, 102.
https://doi.org/10.2151/jmsj.2024-010
Early Online Release
Graphical Abstract
Special Edition on Research on "Heavy rainfall and snowfall, and moisture transport"
Plain Language Summary: This study performed a historical atmospheric reanalysis from 1850 to 2015, assimilating only surface pressure observations with an atmospheric general circulation model. The reanalysis is called OCADA (Over-Centennial Atmospheric Data Assimilation), and it provides the evolution of the three-dimensional atmosphere and the quantitative information of the uncertainties. Severe weather events that occurred in Japan before World War II were downscaled to the East Asian region using a regional climate model.
Highlights:
- Surface pressure observations in East and Southeast Asia, which are newly archived and used in this study, account for 15 % of the database in the early 20th century.
- OCADA is superior in representing the intensities of observed tropical cyclones in 1979-2015.
- OCADA reproduces several extreme precipitation events in Japan before World War II.