Trends in Diurnal Cycle of Summertime Rainfall Over Coastal South China in the Past 135 Years: Characteristics and Possible Causes

Su, Lin; Fung, Jimmy Chi Hung; Li, Junlu; Wong, Wai Kin

doi:10.1029/2020jd033621

Cited by 4 publications

(1 citation statement)

References 74 publications

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“…Coastal extreme rainfall events are influenced by enhanced nocturnal low-level jets (NLLJ) and even marine boundary layer jets [6,16,17]. They are also influenced by the interaction of land-sea breezes and coastal topography [18][19][20]. However, the characteristics and related physical mechanisms of the morning extreme precipitation (MEP) events in the inland region of GD have not been well studied.…”

Section: Introductionmentioning

confidence: 99%

The Principal Modes of Morning Extreme Precipitation over Inland Guangdong, China during Pre-Summer Rainy Season

Wang,

Lu,

et al. 2023

Atmosphere

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The study explores the characteristics of morning extreme precipitation (MEP) during the pre-summer in inland Guangdong. Based on the principal modes, MEP events can be classified into four groups. The first group of MEP (G1) is a typical southeastward-propagating rainfall system originating from the northwestern mountains. This is caused by the strongest accelerated southwesterly winds at night, which bring abundant moist and warm air from the South China Sea (SCS) along with the shear line and the highest convective available potential energy (CAPE). The second group of MEP (G2) is warm-sector heavy rainfall with large-scale warming and higher CAPE. This local rainfall system originates in the south of Nanling mountains at night and reaches its mature stage in the morning. The rainfall system of the third group (G3) originates in central Guangxi and propagates to the southern inland region. The southeasterly winds in Guangxi intensify at night due to the anomalous cyclonic circulation. However, in the morning, the easterly winds shift to the westerlies, favoring eastward propagation. After SCS monsoon onset, cold air intrudes southward, colliding with moist warm air from the SCS, leading to heavy frontal precipitation in the inland region, classified as the fourth group MEP (G4).

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