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Job title |
Senior Researcher/The 2nd lab./Department of Physical Meteorology Research |
E-mail |
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Personal |
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Expertise |
Meteorology, Atmospheric Radiation |
Degree |
M.S. |
Publications |
Peer-reviewed articles
- Kudo, R., Henri Diémoz, Victor Estellés, Monica Campanelli, Masahiro Momoi, Franco Marenco, Claire L Ryder, Osamu Ijima, Akihiro Uchiyama, Kouichi Nakashima, Akihiro Yamazaki, Ryoji Nagasawa, Nozomu Ohkawara, Haruma Ishida, 2021: Optimal use of the Prede POM sky radiometer for aerosol, water vapor, and ozone retrievals, Atmos. Meas. Tech., 14, 3395–3426.
- H. Kawai, S. Yukimoto, T. Koshiro, N. Oshima, T. Tanaka, H. Yoshimura, R. Nagasawa, 2019: Significant improvement of cloud representation in the global climate model MRI-ESM2, Geosci. Model Dev., 12, 2875–2897.
- Y. Takaya, S. Hirahara, T. Yasuda, S. Matsueda, T. Toyoda, Y. Fujii, H. Sugimoto, C. Matsukawa, I. Ishikawa, H. Mori, R. Nagasawa, Y. Kubo, N. Adachi, G. Yamanaka, T. Kuragano, A. Shimpo, S. Maeda, T. Ose, 2018: Japan Meteorological Agency/Meteorological Research Institute-Coupled Prediction System version 2(JMA/MRI-CPS2): atmosphere–land–ocean–sea ice coupled prediction system for operational seasonal forecasting, Clim. Dyn., 10.1007/s00382-017-3638-5
- Nagasawa, R., T. Iwasaki, S. Asano, K. Saito, and H. Okamoto, 2006: Resolution dependence of nonhydrostatic models in simulating the formation and evolution of low-level clouds during a "Yamase" event, J. Meteor. Soc. Japan, 84, 969-987.
- Saito, K., T. Fujita, Y. Yamada, J. Ishida, Y. Kumagai, K. Aranami, S. Ohmori, R. Nagasawa, S.Kumagai, C. Muroi, T. Kato, H. Eito, and Y. Yamazaki, 2006: The Operational JMA Nonhydrostatic Mesoscale Model, Mon. Wea. Rev., 134, 1266-1298.
Other publications
- Hitoshi Yonehara, Yukihiro Kuroki, Masashi Ujiie, Chihiro Matsukawa, Takafumi Kanehama, Ryoji Nagasawa, Kenta Ochi, Mayuko Higuchi, Yuiko Ichikawa, Ryohei Sekiguchi, Shoji HIRAHARA, 2023: Upgrade of JMA’s operational global numerical weather prediction system, WGNE Res. Activ. Earth Syst. Modell., 53, 6-15-6-16.
- Haruki YAMAGUCHI, Yukimasa ADACHI, Shoji HIRAHARA, Yuiko ICHIKAWA, Tomoya IWAHIRA, Yukihiro KUROKI, Chihiro MATSUKAWA, Ryoji NAGASAWA, Kenta OCHI, Ryohei SEKIGUCHI, Toshinari TAKAKURA, Masashi UJIIE, Hitoshi YONEHARA, 2022: Upgrade of JMA's Global Ensemble Prediction System, WGNE Res. Activ. Earth Syst. Modell., 52, 6-09-6-10.
- Ryoji Nagasawa, 2021: Impact of ice cloud treatment on the OLR in the radiation calculation of JMA global NWP model, WGNE Res. Activ. Earth Syst. Modell., 51, 4-13-4-14.
- Hitoshi Yonehara, Chihiro Matsukawa, Takashi Nabetani, Takafumi Kanehama, Takayuki Tokuhiro, Kazutaka Yamada, Ryoji Nagasawa, Yukimasa Adachi, Ryouhei Sekiguchi, 2020: Upgrade of JMA's operational global model, WGNE Res. Activ. Earth Syst. Modell., 50, 6-19-6-20.
- Hitoshi Yonehara, Ryouhei Sekiguchi, Takafumi Kanehama, Kei Saitou, Teppei Kinami, Akira Shimokobe, Daisuke Hotta, Ryoji Nagasawa, Hitoshi Sato, Masashi Ujiie,Takashi Kadowaki, Syoukichi Yabu, Kazutaka Yamada, Masayuki Nakagawa,Takayuki Tokuhiro, 2018: Upgrade of JMA’s operational global NWP system, CAS/JSC WGNE Res. Act. Atmos. Ocea. Model., 48, 0615-0616.
- Hitoshi Yonehara, Takayuki Tokuhiro, Ryoji Nagasawa, Masashi Ujiie, Akira Shimokobe, Masayuki Nakagawa, Ryouhei Sekiguchi, Takafumi Kanehama, Hitoshi Sato, Kei Saitou, 2017: Upgrade of parameterization schemes in JMA's operational global NWP model, CAS/JSC WGNE Res. Act. Atmos. Ocea. Model., 47, 0417-0418.
- Nagasawa, R., 2013: Problem of cloud overlap in radiation process in JMA global NWP model, CAS/JSC WGNE Res. Act. Atmos. Ocea. Model., 42, 0415-0416.
- Tabito Hara, Kohei Aranami, Ryoji Nagasawa, Masami Narita, Tomonori Segawa, Daisuke Miura, Yuki Honda, Hiroshi Nakayama and Kensuke Takenouchi, 2007: Upgrade of the operational JMA non-hydrostatic mesoscale model, CAS/JSC WGNE Res. Act. Atmos. Ocea. Model., 37, 0511-0512.
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