Operational data assimilation system for the Kuroshio south of Japan: Reanalysis and validation

Journal of Oceanography

Volumn 60, Issue 2, 2004, Pages 303-312

  Kamachi, Masafumi ^a   Kuragano, Tsunare ^b   Ichikawa, Hiroshi ^c   Nakamura, Hirohiko ^c   Nishina, Ayako ^c   Isobe, Atsuhiko ^d   Ambe, Daisuke ^d   Arai, Masazumi ^e   Gohda, Noriaki ^e   Sugimoto, Satoshi ^b   Yoshita, Kumi ^b   Sakurai, Toshiyuki ^b   Uboldi, Francesco ^f  

^a METEOROLOGICAL RESEARCH INSTITUTE   (Japan)

^b JAPAN METEOROLOGICAL AGENCY   (Japan)

^c KAGOSHIMA UNIVERSITY   (Japan)

^d KYUSHU UNIVERSITY   (Japan)

^e HIROSHIMA UNIVERSITY   (Japan)

^f LEGOS   (France)

Author keywords

Data assimilation; Kuroshio; Reanalysis; Ryukyu Current System

Indexed keywords

DATA ASSIMILATION; FLOW VELOCITY; OCEANIC CURRENT; VERTICAL DISTRIBUTION;

KUROSHIO CURRENT; PACIFIC OCEAN;

EID: 2942540997     PISSN: 09168370     EISSN: None     Source Type: Journal    
DOI: 10.1023/B:JOCE.0000038336.87717.b7     Document Type: Article

References (35)

1. Ambe, D., S. Imawaki, S. Uchida and K. Ichikawa (2004): Estimating the Kuroshio axis south of Japan using combination of satellite altimetry and drifting buoys. J. Oceanogr., 60, this issue, 375-382.
2. Bennett, A. F. (2002): Inverse Modeling of the Ocean and Atmosphere. Cambridge University Press, Cambridge, 234 pp.
3. Bourtier, F. and P. Courtier (1999): Data assimilation concepts and methods. Rep. of ECMWF, 75 pp.
4. Bryan, K. (1969): A numerical method for the study of the world ocean. J. Comp. Phys., 4, 347-376.
5. Hellerman, S. and M. Rosenstein (1983): Normal monthly wind stress over the world ocean with error estimates. J. Phys. Oceanogr., 13, 1093-1104.
6. Ichikawa, H., H. Nakamura, A. Nishina and M. Higashi (2004): Variability of northeastward current southeast of northern Ryukyu Islands. J. Oceanogr., 60, this issue, 351-363.
7. Imawaki, S., H. Uchida, H. Ichikawa, M. Fukasawa, S. Umatani and The ASUKA Group (2001): Satellite altimeter monitoring the Kuroshio transport south of Japan. Geophys. Res. Lett., 28, 17-20.
8. Ishizaki, H. and T. Motoi (1999): Reevaluation of the Takano-Oonishi scheme for momentum advection on bottom relief in ocean models. J. Atmos. Ocean. Tech., 16, 1994-2010.
9. Isobe, A., M. Kamachi, Y. Masumoto, H. Uchida and T. Kuragano (2004): Seasonality of the Kuroshio transport revealed in a Kuroshio assimilation system. J. Oceanogr., 60, this issue, 321-328.
10. Kalnay, E. (2003): Atmospheric Modeling, Data Assimilation and Predictability. Cambridge University Press, Cambridge, 341 pp.
11. Kalnay, E. and Coauthors (1996): The NCEP/NCAR 40-year reanalysis progect. Bull. Amer. Meteor. Soc., 77, 434-471.
12. Kamachi, M., T. Kuragano, N. Yoshioka, J. Zhu and F. Uboldi (2001): Assimilation of satellite altimetry into a Western North Pacific operational model. Adv. In Atmos. Sci., 18, 767-786.
13. Kamachi, M., T. Kuragano and S. Sugimoto (2003): Present status of assessments of ocean data assimilation products: An introduction to GODAE metrics. Weather Service Bulletin, JMA, 70, S107-S122 (in Japanese).
14. Kamachi, M., T. Kuragano, S. Sugimoto, K. Yoshita, T. Sakurai, T. Nakano, N. Usui and F. Uboldi (2004): Short-range prediction experiments with operational data assimilation system for the Kuroshio south of Japan. J. Oceanogr., 60, this issue, 269-282.
15. Kaneko, A., Z. Yuan, N. Gohda, M. Arai, H. Nakajima, H. Zheng and T. Sugimoto (2001): Repeat meridional survey of the western North Pacific subtropical gyre by a VOS ADCP during 1997 to 1998. Geophys. Res. Lett., 28, 3429-3434.
16. Kawabe, M. (1980): Sea level variations around the Nansei Islands and the large meander in the Kuroshio south of central Japan. J. Oceanogr. Soc. Japan, 36, 227-235.
17. Killworth, P. D. (1996): Time interpolation of forcing fields in ocean models. J. Phys. Oceanogr., 26, 136-143.
18. Kimura, Y. and M. Endoh (1989): Response experiment of the Pacific Ocean to anomalous wind stress with ocean general circulation model. Tech. Rep. of the Met. Res. Inst., 24, 96 pp.
19. Kuragano, T. and M. Kamachi (2000): The global statistical space-time scales of oceanic variability estimated from the TOPEX/POSEIDON altimeter. J. Geophys. Res., 105, 955-974.
20. Kuragano, T. and M. Kamachi (2003): Altimeter's capability of reconstructing realistic eddy fields using space-time optimum interpolation. J. Oceanogr., 59, 765-781.
21. Kuragano, T. and M. Kamachi (2004): Balance of volume transports between horizontal circulation and meridional overturn in the North Pacific subarctic region. J. Oceanogr., 60, this issue, 439-451.
22. Kuragano, T., S. Sugimoto, N. Yoshioka, T. Yoshida and M. Kamachi (2001): Objective analysis of temperature and salinity with satellite altimetry and in situ observation in the Pacific. Weather Service Bulletin, JMA, 68, 99-119 (in Japanese).
23. Levitus, S. (1982): Climatological atlas of the world ocean. NOAA Prof. Paper, 13, 174 pp.
24. Levitus, S. and T. P. Boyer (1994): World Ocean Atlas 1994, Vol. 4: Temperature, NOAA Atlas NESDIS 4, 117 pp.
25. Levitus, S., R. Gurgett and T. P. Boyer (1994): World Ocean Atlas 1994, Vol. 3: Salinity, NOAA Atlas NESDIS 3, 99 pp.
26. Nitani, H. (1972): Chapter 5, Beginning of the Kuroshio. p. 120-163. In Kuroshio, Its Physical Aspects, ed. by H. Stommel and K. Yoshida, Washington Univ. Press.
27. Richardson, L. F. and H. Stommel (1948): Note on eddy diffusion in the sea. J. Meteorol., 5, 238-240.
28. Saiki, M. (1982): Relation between the geostrophic flux of the Kuroshio in the Eastern China Sea and its large-meanders in south of Japan. Oceanogr. Mag., 32, 11-18.
29. Stommel, H. (1949): Horizontal diffusion due to oceanic turbulence. J. Mar. Res., 8, 199-225.
30. Sugimoto, S., M. Kamachi, K. Yoshita, K. Murakami, S. Kawae, Y. Miura, M. Tani, N. Yoshioka, S. Minato, N. Miyagi, T. Segawa and K. Okano (2003): Validation of the ocean comprehensive analysis system. Weather Service Bulletin, JMA, 70, S71-S105 (in Japanese).
31. Uboldi, F. (1998): Report on Eddy Synthetic Models, Reports in COMPASS Group No. 2, Met. Res. Inst., 49 pp.
32. Wunsch, C. (1996): The Ocean Circulation Inverse Problem. Cambridge University Press, Cambridge, 442 pp.
33. Yoon, J.-H. (2003): Pacific circulation model. Proceedings of the Annual Report of the Research Revolution 2002 (RR2002), MEXT, Tokyo, 119-120.
34. Zhu, J. and M. Kamachi (2000): An adaptive variational method for data assimilation with imperfect models. Tellus, 52A, 265-279.
35. Zhu, X.-H., I.-S. Han, J.-H. Park, H. Ichikawa, K. Murakami, A. Kaneko and A. Ostrovskii (2003): The northeastward current southeast of Okinawa Island observed during November 2000 to August 2001. Geophys. Res. Lett., 30, No. 2, 1071, doi:10.1029/2002GL015867.