Graphical Abstract

• Tweet

Li, H., X. GE, M. Peng, L. Li, 2022: The influences of Monsoon Trough on the relative motion of binary tropical cyclones. J. Meteor. Soc. Japan, 100, 729-749.
https://doi.org/10.2151/jmsj.2022-038
Graphical Abstract

Plain Language Summary: In this study, the effect of the zonally-elongating monsoon trough (MT) on the binary tropical-cyclones (TCs) interaction is investigated by using data analysis and idealized simulations. The binary-TCs interaction is found to be sensitive to the relative orientation, intensities of the two TCs embedded in the MT, the strength of the MT, and the β-effect.  

Highlights:

• The partition and reconstruction of wind field in a vortex core area of TC is applied to diagnosis the Fujiwhara interaction.
• The β-induced Rossby wave energy dispersion helps the western TC move northeastward, by which accelerates to reach the critical distance.
• The relative importance of monsoon trough and adjacent TC is assessed by using the decomposition of the steering flows.