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Aug 2026
Delayed Tropospheric Response over the East Asia–Northwest Pacific Sector to Arctic Stratospheric Polar Vortex Intensity Anomalies
Based on ERA5 reanalysis data (1979–2022) and sensitivity experiments with the WACCM climate model, this study examines the delayed tropospheric response over the East Asia–Northwest Pacific (EANP) region to stratospheric polar vortex intensity (PVI) anomalies. It is found that positive PVI anomalies in the lower str...
Chongyang Zhang, Jiankai Zhang, Yang Li et al.
· Journal of Climate · 0 citations
Open access
Sep 2026
Stratospheric Quasi‐Biennial Oscillation Modulates Tropical Cyclone Extreme Rainfall Over East Asia via Intraseasonal Oscillation
Tropical cyclone (TC)‐induced extreme precipitation (TCEP) poses heavy risks, yet its seasonal predictability remains limited by insufficient understanding of cross‐scale climatic drivers. Here, we elucidate a stratosphere‐to‐stratosphere coupling pathway where the quasi‐biennial oscillation (QBO) modulates TC activity...
Xiao-Ming Wang, Fang Zhou, Zhi-Cong Yin et al.
· Geophysical Research Letters · 0 citations
Open access
Sep 2026
On the specificity of the tropospheric configurations related to stratospheric vortex decelerations
The wintertime stratospheric circulation over the Northern Hemisphere is characterized by a persistent westerly polar vortex. This circulation can undergo substantial decelerations of varying intensity, accompanied by a pronounced warming of the polar stratosphere. In the most extreme cases, such decelerations may le...
David Gallego, Maria del Carmen Alvarez-Castro, Davide Faranda et al.
· Scientific Reports · 0 citations
Sep 2026
Decadal Surge in Tibetan Plateau 20–30‐Day Oscillation Intensity (1995–2005) Linked to Summer NAO Structure and Baroclinic Energy Conversion
The 20–30‐day intraseasonal oscillation (ISO) over the Tibetan Plateau (TP) significantly modulates summer precipitation, accounting for over 10% of regional rainfall variability. This study identifies a decadal intensification of the summer 20–30‐day ISO during 1995–2005 and examines its multidecadal covariation wit...
Mei-Rong Wang, Jun Wang, An-Min Duan et al.
· Journal of Geophysical Resea... · 0 citations
Oct 2026
Footprints of Tropical Cyclones in the Global Climate. Part I: Improved Potential Vorticity Inversion for Tropical Cyclone Vortex Removal
While tropical cyclones (TCs) are short-lived, they are known to have upscale effects. Isolating TC-vortex contributions embedded in climate fields is difficult because the observed atmosphere always includes TC activity. This study develops a framework to diagnostically separate TC-vortex-induced components from glo...
S. Arakane, Huang-Hsiung Hsu, Ying-Ting Chen et al.
· Journal of Climate · 0 citations
Open access
Oct 2026
Interannual Variability in the Stratosphere–Troposphere Exchange of Air Mass and Ozone in Chemistry Climate Models
Stratosphere–troposphere exchange (STE) governs the transport of air mass and chemical constituents, including ozone, across the tropopause and therefore plays an important role in coupling the stratosphere and troposphere. While the annual-mean STE has been well characterized, its interannual variability and the proce...
Anna Hall, Cong Dong, Qiang Fu et al.
· Climate · 0 citations