An Overview of Low-Level Jets (LLJs) and Their Roles in Heavy Rainfall over the Taiwan Area during the Early Summer Rainy Season
Yi‐Leng Chen, Chuan‐Chi Tu, Feng Hsiao, Ching-Sen Chen, Pay‐Liam Lin, Po‐Hsiung Lin
Abstract
During the early summer rainy season over Taiwan, three types of low-level jets are observed, including a synoptic low-level jet (SLLJ) situated in the 850–700 hPa layer in the frontal zone, a marine boundary layer jet (MBLJ) embedded within the southwesterly monsoon flow over the northern South China Sea at approximately the 925 hPa level, and an orographically induced jet at approximately the 1 km level off the northwestern Taiwan coast (e.g., barrier jet (BJ)). The characteristics and physical processes of the formation of these three types of low-level jets are reviewed, and their roles in the development of heavy rainfall are discussed.
Topics & Concepts
Jet (fluid)MonsoonWet seasonClimatologyEnvironmental scienceAtmospheric sciencesGeologyGeographyPhysicsThermodynamicsCartographyMeteorological Phenomena and SimulationsTropical and Extratropical Cyclones ResearchPrecipitation Measurement and Analysis