Heavy Rainfall Associated with Double Low-Level Jets over Southern China. Part II: Convection Initiation

Global Precipitation Extremes Associated with Diurnally Varying Low-Level Jets

Extreme rainfall events have important societal impacts: for example, by causing flooding, replenishing reservoirs, and affecting agricultural yields. Previous literature has documented linkages between rainfall extremes and nocturnal low-level jets (NLLJs) over the Great Plains of North America and the La Plata River basin of South America. In this study, the authors utilize a 21-yr, hourly gl...

Summertime Low-Level Jets Over the Great Plains

A low-level jet (LLJ) is a wind speed maximum that occurs in the lowest few km of the atmosphere. The frequency of LLJ development over the United States is documented climatologically by Bonner (1968), indicating that the Southern Great Plains Cloud and Atmospheric Radiation Testbed (CART) site of the Atmospheric Radiation Measurement (ARM) Program is situated within the region of maximum LLJ ...

American Low Level jetS

Intensified Springtime Deep Convection over the South China Sea and the Philippine Sea Dries Southern China

Springtime rainfall, accounting for 25-40% of the annual rainfall in southern China, exerts great agricultural and socioeconomic impacts on the region. In the recent decades, southern China has experienced a significant declining trend of precipitation in boreal spring. Meanwhile, precipitation has increased over the South China Sea and the Philippine Sea (SCS-PhS). This paper presents observat...

Investigation of the atmospheric circulation anomalies associated with extreme rainfall events over the Coastal West Africa

This study investigates the atmospheric circulation associated with extreme rainfall events over the coastal West Africa. The rainfall data of this study were obtained from the Global Precipitation Climatology Centre (GPCC), spanning from 1981 to 2010. The atmospheric datasets were also obtained from the ERA-Interim reanalysis. The study employed the Z-Index to categorize dry and wet years into...