Journal of Oceanography

, Volume 62, Issue 3, pp 283–287 | Cite as

Heat content change in the surface isothermal layer of a warm core ring in the sea east of Japan

Short Contribution


Heat content change in the surface isothermal layer of a typical warm core ring in the sea east of Japan is described based on approximately 90 CTD profiles obtained by one profiling float. Erosion of the seasonal thermocline and development of a surface isothermal layer from the mid-summer to the early winter of 1999 are clearly seen. While heat content change between two consecutive profiles with a 35-hour time interval is much noisier, its 10-day running mean is consistent with net surface heat flux, indicating that surface heat flux dominates the temporal heat content change in the surface isothermal layer in the warm core ring.


Mixed layer isothermal layer heat flux warm core ring the sea east of Japan profiling float 


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Copyright information

© The Oceanographic Society of Japan/TERRAPUB/Springer 2006

Authors and Affiliations

  1. 1.Office of Marine PredictionJapan Meteorological AgencyTokyoJapan

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