OKAMOTO, Kozo

[Japanese]


Job title	Director/Department of Observation and Data Assimilation Research
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Expertise	Satellite data assimilation: (1) All-sky infrared radiance assimilation for Himawari and hyperspectral sounders (2) Evaluation and assimilation of Doppler wind lidar and new satellite observations (3) Observing system simulation experiment (OSSE) for future satellite observations (4) Space-based radar and lidar assimilation
Degree	Ph.D.
Publications	Okamoto, K., T. Ishibashi, I. Okabe, 2023: All-sky infrared radiance assimilation of a geostationary satellite in the Japan Meteorological Agency's global system. Quarterly Journal of the Royal Meteorological Society,Quart. J. Roy. Meteor. Soc, 149, 2477-2503, https://doi.org/10.1002/qj.4516 Okamoto, K., M. Hayashi, T. Hashino, M. Nakagawa, and A. Okuyama, 2021: Examination of all-sky infrared radiance simulation of Hiwamari-8 for global data assimilation and model verification, Quart. J. Roy. Meteor. Soc, 147, 3611–3627, https://doi.org/10.1002/qj.4144 Okamoto, K., H. Owada, T. Fujita, M. Kazumori, M. Otsuka, H. Seko, Y. Ota, N. Uekiyo, H. Ishimoto, M. Hayashi, H. Ishida, A. Ando, M. Takahashi, K. Bessho, H. Yokota, 2020: Assessment of the potential impact of a hyperspectral infrared sounder on the Himawari follow-on geostationary satellite, SOLA 16, 162-168. doi.org/10.2151/sola.2020-028 Okamoto, K., Y. Sawada and M. Kunii, 2019: Comparison of assimilating all‐sky and clear‐sky infrared radiances from Himawari‐8 in a mesoscale system. Quart. J. Roy. Meteor. Soc. 145, 745-766. doi.org/10.1002/qj.3463 Okamoto, K., T. Ishibashi, S. Ishii, P. Baron, K. Gamo, T. Y. Tanaka, K. Yamashita, and T. Kubota, 2018: Feasibility study for future space-borne coherent Doppler wind lidar. part 3: Impact assessment using sensitivity observing system simulation experiments. J. Meteor. Soc. Japan, 96, 179-199, doi.org/10.2151/jmsj.2018-024. Okamoto, K. 2017: Evaluation of IR radiance simulation for all-sky assimilation of Himawri-8/AHI in a mesoscale NWP system. Quart. J. Roy. Meteor. Soc., 143, 1517-1527. doi:10.1002/qj.3022 Okamoto, K., K. Aonashi, T. Kubota and T. Tashima, 2016: Experimental assimilation of the GPM-Core DPR reflectivity profiles for Typhoon Halong (2014). Mon. Weather Rev., 144, 2307-2326. DOI: http://dx.doi.org/10.1175/MWR-D-15-0399.1 Okamoto, K., T. McNally and W. Bell, 2014: Progress towards the assimilation of all-sky infrared radiances: an evaluation of cloud effects. Quart. J. Roy. Meteor. Soc., , 140, 1603-1614. doi:10.1002/qj.2242
Project	Research on Data Assimilation Technologies and High-level Use of Observation Data JAXA 3rd EO-RA "Verification and data assimilation using space-based radars and JMA global forecast systems"