Graphical Abstract

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Yulihastin, E., T. W. Hadi, M. R. Abdillah, I. R. Fauziah, and N. S. Ningsih, 2022: Propagation of convective systems associated with early morning precipitation and different northerly background winds over western Java. J. Meteor. Soc. Japan, 100, 99-113.
Special Edition on Years of the Maritime Continent (YMC),
https://doi.org/10.2151/jmsj.2022-005
Graphical Abstract Published

Plain Language Summary: The early morning precipitation (EMP) events over the northern coast of western Java are characterized by propagating convective systems. We found that these propagating precipitation systems are modulated background wind conditions. The EMP is mainly induced by a precipitation system that propagates from sea to land in cases of both strong northerly (SN) and weak northerly (WN) wind background. In case of WN, the propagating systems moving from inland to the sea also play a role on the EMP. We suggest that the propagations are sustained by cold pool and background wind interactions.

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Highlights:

• Cold pool propagation and its advection by the prevailing winds is responsible for the propagating convection, which explains its dependence on the strength of background wind.