Dingzhu Hu, Zhaoyong Guan, Wenshou Tian, Rongcai Ren
The stratospheric Arctic vortex (SAV) plays a critical role in forecasting cold winters in northern mid-latitudes. Its influence on the tropospheric mid- and high-latitudes has attracted growing attention in recent years. However, the trend in the SAV during the recent two decades is still unknown. ...
Dingzhu Hu, Zhaoyong Guan, Wenshou Tian
Abstract Previous studies showed that Antarctic ozone could modulate the Hadley circulation (HC) and precipitation in the Southern Hemisphere. However, whether and how, if any, Arctic stratospheric ozone (ASO) modulates the northern HC and subtropical precipitation remains unclear. We found an out‐o...
Dingzhu Hu, Yipeng Guo, Zhaoyong Guan
Abstract Previous studies have reported that the tropospheric climate shifted around the 2000s, but the recent trend in the stratospheric wave intensity (SWI) is still unclear. The results in this study show that the SWI in December during 2001–2015 weakens, which is opposite to that during 1979–200...
Dingzhu Hu, Zhaoyong Guan, Meichen Liu, Tao Wang
Abstract The connections between the stratosphere and troposphere, for example, the stratospheric Arctic vortex (SAV) and Arctic Oscillation (AO), have been paid attention by scientists and the public in recent years. Previous studies suggested that the coupling between the stratosphere and troposph...
Dingzhu Hu, Meichen Liu, Zhaoyong Guan, Wenshou Tian et al.
Abstract Using long‐term reanalysis data, extreme cold events (ECEs) over East Asia are categorized into long‐duration ECEs (L‐ECEs, lasting more than 7 days) and short‐duration ECEs (S‐ECEs, lasting 3–7 days) according to the duration of ECEs during boreal winters from 1959/1960 to 2019/2020. Our r...
G. Mu, Wenjun Zhang, Feng Jiang, Dingzhu Hu et al.
Huimin Zhang, Dingzhu Hu, Tingting Han
Meichen Liu, Dingzhu Hu
Azarias Munyentwari, Dingzhu Hu, Yue Huang, Tanimu Abubakar Sadiq
This study investigates the relationship between the Quasi-Biennial Oscillation (QBO) and precipitation anomalies over sub-Saharan Africa (SSA) during the December–February season (DJF season) using ERA5 reanalysis and CHIRPS observations. The ERA5 accurately reproduces CHIRPS precipitation patterns...
L Zhang, Dingzhu Hu
In recent years, numerous studies have suggested that spring Arctic stratospheric ozone (ASO) variability has significant impacts on Northern Hemisphere climate. Accurate prediction of spring ASO changes is of great importance for improving the skill of short-term climate forecasts in the Northern H...
Yue Huang, Dingzhu Hu
Abstract This study investigates the interdecadal stability of the relationship between the quasi-biennial oscillation (QBO) and East Asian peak summer (July–August) precipitation using long-term observational and reanalysis datasets from 1959 to 2020. Results show a significant strengthening of the...