Effects of South China Sea/western North Pacific summer monsoon on tropospheric biennial oscillation (TBO)
Zheng Bin(郑彬)† , Gu De-Jun(谷德军), Lin Ai-Lan(林爱兰), and Li Chun-Hui(李春晖)
Guangzhou Institute of Tropical and Marine Meteorology/the Key Open Laboratory for Tropical Monsoon, China Meteorological Administration, Guangzhou 510080, China
Abstract Several theories have been developed to explain tropical biennial oscillation (TBO), as an air--sea interactive system to impact Asian and global weather and climate, and some models have been established to produce a TBO. A simple 5-box model, with almost all the key processes associated with TBO, can produce a TBO by including air--sea interactions in the monsoon regions. Despite that, the South China Sea/western North Pacific summer monsoon (SCS/WNPSM), a very important monsoon subsystem, is neglected. In this paper, based on the dynamical framework of 5-box model, the term of SCS/WNPSM has been added and a 6-box model has been developed. Comparing the difference of TBO sensibilities with several key parameters, air--sea coupling coefficient $\alpha$, SST-thermocline feedback coefficient $\gamma$ and wind-evaporation feedback coefficient $\lambda$, between the modified model and original model, TBO is more sensible to the parameters in the new model. The results imply that the eastern Pacific and local wind-evaporation play more important roles in the TBO when including SCS/WNPSM.
Received: 06 September 2006
Revised: 19 October 2006
Accepted manuscript online:
Fund: Project supported by the National Natural Science Foundation of
China (Grant No~40505019) and the Open Research Fund of Laboratory of
China Meteorological Administration (Grant No~CMATG2006L03).
Cite this article:
Zheng Bin(郑彬), Gu De-Jun(谷德军), Lin Ai-Lan(林爱兰), and Li Chun-Hui(李春晖) Effects of South China Sea/western North Pacific summer monsoon on tropospheric biennial oscillation (TBO) 2007 Chinese Physics 16 1472
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.