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Heat and salt transport throughout the North Pacific Ocean
- Journal of Oceanology and Limnology Vol. 34, Issue 6, Pages: 1347-1357(2016)
- Affiliations：
1. Institute of Oceanology Chinese Academy of Sciences
2. University of Chinese Academy of Sciences
3. Key Laboratory of Ocean Circulation and Waves Chinese Academy of Sciences
4. Qingdao Collaborative Innovation Center of Marine Science and Technology
- Author bio：
- Funds：
DOI：10.1007/s00343-016-5125-y
CLC：-
Online First：11 March 2016，
Published：2016
- Accepted：
Scan QR Code
Yang, L., Yuan, D. Heat and salt transport throughout the North Pacific Ocean., Chin. J. Ocean. Limnol. 34, 1347–1357 (2016). https://doi.org/10.1007/s00343-016-5125-y
摘要
Abstract
Absolute geostrophic currents in the North Pacific Ocean are calculated using the P-vector method and gridded Argo profiling data from January 2004 to December 2012. Three-dimensional structures and seasonal variability of meridional heat transport (MHT) and meridional salt transport (MST) are analyzed. The results show that geostrophic and Ekman components are generally opposite in sign
with the southward geostrophic component dominating in the subtropics and the northward Ekman component dominating in the tropics. In combination with the net surface heat flux and the MST through the Bering Strait
the MHT and MST of the western boundary currents (WBCs) are estimated for the first time. The results suggest that the WBCs are of great importance in maintaining the heat and salt balance of the North Pacific. The total interior MHT and MST in the tropics show nearly the same seasonal variability as that of the Ekman components
consistent with the variability of zonal wind stress. The geostrophic MHT in the tropics is mainly concentrated in the upper layers
while MST with large amplitude and annual variation can extend much deeper. This suggests that shallow processes dominate MHT in the North Pacific
while MST can be affected by deep ocean circulation. In the extratropical ocean
both MHT and MST are weak. However
there is relatively large and irregular seasonal variability of geostrophic MST
suggesting the importance of the geostrophic circulation in the MST of that area.
关键词
Keywords
references
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