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Kobayashi, S., Y. Ota, Y. Harada, A. Ebita, M. Moriya, H. Onoda, K.
Onogi, H. Kamahori, C. Kobayashi, H. Endo, K. Miyaoka, and K.
Takahashi, 2015: The JRA-55 Reanalysis: General Specifications and
Basic Characteristics. J. Met. Soc. Jap., 93(1), 5-48 (DOI:
10.2151/jmsj.2015-001), URL:
https://www.jstage.jst.go.jp/article/jmsj/93/1/93_2015-001/_article.
Kobayashi, C., H. Endo, Y. Ota, S. Kobayashi, H. Onoda, Y. Harada,
K. Onogi and H. Kamahori, 2014: Preliminary results of the JRA-55C,
an atmospheric reanalysis assimilating conventional observations
only. Sci. Online Lett. on the Atmos., 10, 78-82 (DOI:
10.2151/sola.2014-016), URL:
https://www.jstage.jst.go.jp/article/sola/10/0/10_2014-016/_article.
Onogi, K., J. Tsutsui, H. Koide, M. Sakamoto, S. Kobayashi, H.
Hatsushika, T. Matsumoto, N. Yamazaki, H. Kamahori, K. Takahashi, S.
Kadokura, K. Wada, K. Kato, R. Oyama, T. Ose, N. Mannoji, and R.
Taira, 2007: The JRA-25 Reanalysis. J. Met. Soc. Jap., 85(3),
369-432 (DOI: 10.2151/jmsj.85.369), URL:
https://www.jstage.jst.go.jp/article/jmsj/85/3/85_3_369/_article.
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| hasSummary |
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As a subset of the Japanese 55-year Reanalysis (JRA-55) project, the
Meteorological Research Institute of the Japan Meteorological Agency
has conducted a global atmospheric reanalysis that assimilates only
conventional surface and upper air observations, with no use of
satellite observations, using the same data assimilation system as
the JRA-55. The project, named the JRA-55 Conventional (JRA-55C),
aims to produce a more homogeneous dataset over a long period,
unaffected by changes in historical satellite observing systems. The
dataset is intended to be suitable for studies of climate change or
multidecadal variability. The reanalysis period of JRA-55C is from
November 1972 to December 2012. The JMA recommends the use of JRA-55
to extend JRA-55C back to January 1958.
The Data Support Section at NCAR has downloaded all JRA-55C data.
The entire archive has been reorganized into single parameter time
series, and model resolution data has been transformed to a regular
Gaussian grid. The JRA-55C products are currently being made
accessible to RDA registered users of JRA-55, and will appear
incrementally via the Data Access tab.
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