Characteristics of Nepartak (2021), a subtropical cyclone controlled by an upper‐tropospheric cutoff low

نویسندگان

چکیده

Abstract This study investigated the structural and track change of cyclone Nepartak occurred over western North Pacific in July 2021, a appeared at surface level, using ERA5 data, focusing on relationship with an upper‐tropospheric cutoff low (COL). The COL was shown to dominate which developed as subtropical hybrid structure. As approached COL, it overlapped by became two‐storied structure, resulting its abrupt change. An analysis potential vorticity (PV) tendency showed that movement toward ceased because counter‐balance horizontal/vertical PV advection anomaly generated diabatic heating, whereas northward motion primarily due horizontal associated COL. is case changes structure are controlled

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ژورنال

عنوان ژورنال: Atmospheric Science Letters

سال: 2023

ISSN: ['1530-261X']

DOI: https://doi.org/10.1002/asl.1177