TY - JOUR
T1 - Microphysical Characteristics of the Phase-Locking VRW-Induced Asymmetric Convection in the Outer Eyewall of Super Typhoon Lekima (2019)
AU - Huang, Hao
AU - Li, Qingqing
AU - Zhao, Kun
AU - Dai, Huaning
AU - Ming, Jie
AU - Fan, Xueqi
AU - Xu, Yuanyuan
AU - Duan, Yihong
AU - Lee, Wen Chau
AU - Zheng, Feng
N1 - Publisher Copyright:
© 2022. American Geophysical Union. All Rights Reserved.
PY - 2022/5/16
Y1 - 2022/5/16
N2 - Microphysical signatures relevant to the asymmetric convection in the outer eyewall of Super Typhoon Lekima (2019) before its landfall in China were analyzed from ground-based radar observations. The results indicate that the microphysical characteristics varied in quadrants. In the upshear-left outer eyewall, the convection was deepened on the inner edge due to the phase locking between vortex Rossby waves (VRWs), and warm rain was the predominant process contributing to the enhancement of rainfall. In contrast, the strongest precipitation occurred on the outer edge of the upshear-right outer eyewall. In this region, exuberant riming processes and graupel formation prevailed above the melting layer due to the strongest and more outward tilted updrafts induced by the phase locking between the VRWs. A good deal of graupel melted into raindrops, along with significant accretion processes, produced intense rainfall with larger drop sizes.
AB - Microphysical signatures relevant to the asymmetric convection in the outer eyewall of Super Typhoon Lekima (2019) before its landfall in China were analyzed from ground-based radar observations. The results indicate that the microphysical characteristics varied in quadrants. In the upshear-left outer eyewall, the convection was deepened on the inner edge due to the phase locking between vortex Rossby waves (VRWs), and warm rain was the predominant process contributing to the enhancement of rainfall. In contrast, the strongest precipitation occurred on the outer edge of the upshear-right outer eyewall. In this region, exuberant riming processes and graupel formation prevailed above the melting layer due to the strongest and more outward tilted updrafts induced by the phase locking between the VRWs. A good deal of graupel melted into raindrops, along with significant accretion processes, produced intense rainfall with larger drop sizes.
UR - https://www.scopus.com/pages/publications/85130090971
U2 - 10.1029/2021GL096869
DO - 10.1029/2021GL096869
M3 - Article
AN - SCOPUS:85130090971
SN - 0094-8276
VL - 49
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 9
M1 - e2021GL096869
ER -