edu.ucar.opensky::articles:24107 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-25T06:36:44.564583 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7t1570q Initiation and development of a squall line crossing Hangzhou Bay 2021-01-16T00:00:00Z publication https://n2t.org/ark:/85065/d7t1570q https://doi.org/10.1029/2020JD032504 Zhang, Lina author Sun, Juanzhen author Ying, Zhuming author Xiao, X. author UCAR/NCAR - Library publisher The purpose of this study is to examine the influences of mesoscale thermal and dynamical processes near land-sea boundary on the formation and development of a squall line across the Hangzhou Bay (HZB) of East China Sea that resulted in strong surface winds and heavy rainfall. High-resolution spatiotemporal analyses obtained from Variational Doppler Radar Analysis System via the assimilation of radar and surface observations are used for this study. We focus on meso-scale factors leading to the initiation of the squall line and the development of a bow echo that caused damaging winds and heavy rainfall. It was found that a local-scale sea breeze associated with the distinct coastline curvature of the HZB was pivotal to the formation of the squall line. The convective initiation occurred near the HZB's western coastline when the leading edge of the northeasterly sea breeze was met by a westerly outflow from a previous precipitation system to the west of HZB. After the formation of the squall line, a rear inflow jet descending from mid-level to surface contributed to the formation of the bow echo and resulted in damaging local winds. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. None eng geoscientificInformation