| dc.description.abstract | The eyewall, inner rainband, and outer rainband regions of tropical cyclones (TCs) have been extensively studied, resulting in numerous conceptual models. While these conceptual models are insightful regarding basic-state kinematics in TCs, they do not detail kinematic variability. Therefore, kinematic perturbations within TCs are not well documented. One of the University of Oklahoma Shared Mobile Atmospheric Research and Teaching Radars (SRs) was deployed near the Louisiana coast at the time Hurricane Laura made landfall on the Louisiana coast early on 27 August 2020. The SR and the Lake Charles, LA WSR-88D (KLCH) sampled the northeast quadrant of Laura in their collective dual-Doppler lobe from 0000 UTC until KLCH sustained substantial damage at around 0550 UTC. With a 1-km x 1-km x 0.5-km spatial resolution and a temporal resolution of 5-10 minutes, the dual-Doppler analyses (DDAs) captured the eyewall, inner rainband, and outer rainband regions of the hurricane. This dataset therefore provides an opportunity to study the kinematic variability of all three TC regions. This research serves to validate the conceptual models of previous literature using DDA-mean azimuthal-mean vertical profiles. It also aims to uncover the vertical structure of kinematic variability across the TC using an empirical orthogonal function (EOF) analysis. Additionally, this EOF analysis quantifies the amount of variance explained by each perturbation profile. The results of this research largely agree with the conceptual models, though some features are not supported and others are found to not represent the majority of the variance. | en_US |
