Global and Regional Characteristics of Radially Outward Propagating Tropical Cyclone Diurnal Pulses

Zhang, Xinyan; Ditchek, Sarah D.; Corbosiero, Kristen L.; Xu, Weixin

doi:10.1029/2022jd037660

Cited by 2 publications

(2 citation statements)

References 83 publications

(283 reference statements)

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“…Previous studies found that the initiation of the diurnal pulse is closely linked to a strong IR BT cooling signal within the inner core, which may imply the fast developing of the inner-core deep convection and the RI of TCs (X. Zhang et al, 2023;X. Zhang & Xu, 2021b).…”

Section: Methodsmentioning

confidence: 98%

“…The inner‐core IR BT cooling rate represents how fast the convection is developing (Dunion et al., 2014; X. Zhang & Xu, 2021b). Previous studies found that the initiation of the diurnal pulse is closely linked to a strong IR BT cooling signal within the inner core, which may imply the fast developing of the inner‐core deep convection and the RI of TCs (X. Zhang et al., 2023; X. Zhang & Xu, 2021b). The surface precipitation can be a proxy of the convection through the deep layer of the troposphere (Leppert & Cecil, 2016; X. Zhang & Xu, 2022).…”

Section: Methodsmentioning

confidence: 98%

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Diurnal Variations on the Initiation Time and Intensification Rate of Rapidly Intensifying Tropical Cyclones

Zhang

2023

Geophysical Research Letters

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Section: Methodsmentioning

confidence: 98%

Section: Methodsmentioning

confidence: 98%

Diurnal Variations on the Initiation Time and Intensification Rate of Rapidly Intensifying Tropical Cyclones

Zhang

2023

Geophysical Research Letters

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Changes in the Deep Convective Structures of Tropical Cyclones Associated With the Diurnal Pulse

Zhang,

2024

JGR Atmospheres

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This study uses satellite passive microwave (PMW) and spaceborne precipitation radar (PR) observations to investigate changes in the cloud and precipitation structures of tropical cyclones (TCs) experiencing diurnal pulses (DPs). A total of 4677 PMW and 3074 PR snapshots are matched with DP and non‐DP events of TCs objectively identified from infrared satellite images. The PMW observations suggest that compared to non‐DP events, the inner‐core (0–100 km) cold clouds containing both ice and liquid particles become more frequent and widespread when DP occurs. The greatest DP‐associated enhancement of cold clouds occurs in the downshear left quadrant of weak TCs (tropical storms) and in the upshear region of moderate‐to‐strong (≥ CAT 1) hurricanes, respectively. Also, the inner‐core cold clouds of DP events still maintain a relatively symmetric distribution under high‐shear (>10 ms−1) environments compared to non‐DP counterparts. The inner‐core warm cloud, dominated by liquid hydrometeors, increases in regions right of the shear but decreases left of the shear during DP events. Similarly, PR echo‐top height statistics show significant increases of moderate‐to‐deep convection in the TC inner region (0–300 km) on DP events especially for weak TCs. Particularly, the upshear‐right quadrant has the greatest increase in moderate‐to‐deep convection during DP events. These changes lead to a deeper and more symmetric convective structure of TCs' inner region with the occurrence of DPs.

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Global and Regional Characteristics of Radially Outward Propagating Tropical Cyclone Diurnal Pulses

Abstract: Tropical cyclones (TCs) are one of the most catastrophic natural hazards, causing thousands of deaths and billions of dollars in economic losses every year (

Cited by 2 publications

References 83 publications

Diurnal Variations on the Initiation Time and Intensification Rate of Rapidly Intensifying Tropical Cyclones

Diurnal Variations on the Initiation Time and Intensification Rate of Rapidly Intensifying Tropical Cyclones

Changes in the Deep Convective Structures of Tropical Cyclones Associated With the Diurnal Pulse

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