Science Source
Jinlong Huang and Wenshou Tian
Journal of Climate
Published date June 13, 2018
Journal of Climate
Published date June 13, 2018
Preconditioning of Arctic Stratospheric Polar Vortex Shift Events
- Examines the preconditioning of events in which the Arctic stratospheric polar vortex shifts toward Eurasia (EUR events), North America (NA events), and the Atlantic (ATL events) using composite analysis
- Finds that a decrease in blocking days over northern Europe and an increase in blocking days over the Bering Strait favors the movement of the vortex toward North America
- Further defines three types of tropospheric blocking events in which the spatial patterns of blocking frequency anomalies are similar to the blocking patterns prior to EUR, NA, and ATL events, respectively
- Reanalysis reveals that the polar vortex is indeed more likely to shift toward Eurasia, North America, and the Atlantic in the presence of the above three defined tropospheric blocking events
Related Content
Headline

Jan 28, 2019 | NPR
Scientists Say A Fluctuating Jet Stream May Be Causing Extreme Weather Events
Science Source
| Science Advances
Projected changes in persistent extreme summer weather events: The role of quasi-resonant amplification
Science Source
| Geophysical Research Letters
North American weather regimes are becoming more persistent: Is Arctic amplification a factor?
Science Source
| Science Advances
A stratospheric pathway linking a colder Siberia to Barents-Kara Sea sea ice loss