Investigation in the relationship between atmospheric circulation characteristics and extreme weather events formation in Tomsk region

2019 ◽  
Author(s):  
Elena Kharyutkina ◽  
Sergey Loginov ◽  
Evgeniya Usova ◽  
Konstantin Pustovalov
Keyword(s):  
Atmospheric Circulation ◽  
Extreme Weather ◽  
Extreme Weather Events ◽  
Weather Events ◽  
Tomsk Region ◽  
The Relationship ◽  
Circulation Characteristics

scholarly journals The Polar Vortex and Extreme Weather: The Beast from the East in Winter 2018

Atmosphere ◽  
2020 ◽  
Vol 11 (6) ◽  
pp. 664 ◽  
Author(s):  
James Overland ◽  
Richard Hall ◽  
Edward Hanna ◽  
Alexey Karpechko ◽  
Timo Vihma ◽  
...  
Keyword(s):  
North America ◽  
Atmospheric Circulation ◽  
Polar Vortex ◽  
Extreme Weather ◽  
Extreme Weather Events ◽  
Late Winter ◽  
Public Attention ◽  
Cold Surface ◽  
Stratospheric Polar Vortex ◽  
Weather Events

Public attention has recently focused on high-impact extreme weather events in midlatitudes that originate in the sub-Arctic. We investigate movements of the stratospheric polar vortex (SPV) and related changes in lower atmospheric circulation during the February-March 2018 “Beast from the East” cold winter event that dramatically affected much of Europe and north-central North America. This study demonstrates that the movement of the SPV is a key linkage in late winter subarctic and northern midlatitude extreme weather events. February–March 2018 saw two types of subarctic-midlatitude weather connections. In the first type, the SPV was displaced from the pole to lower latitudes over North America in February and then was found over northern Siberia in March. Mid-February and mid-March are examples of persistent near vertically aligned geopotential height structures of the atmospheric circulation. These structures over North America and Eurasia advected cold Arctic air southward. The second type of cold surface event was associated with a weak regional SPV and a sudden stratospheric warming event over Europe during the second half of February. These late winter linkage events that arise through dynamic instabilities of the SPV are more common in the last decade, but the potential role of enhanced Arctic amplification is uncertain.

Reliability, Resilience and the Oncoming Wave of Retiring Baseload Units, Volume I: The Critical Role of Thermal Units During Extreme Weather Events

2018 ◽  
Author(s):  
Peter C. Balash, PhD ◽  
Kenneth C. Kern ◽  
John Brewer ◽  
Justin Adder ◽  
Christopher Nichols ◽  
...  
Keyword(s):  
Critical Role ◽  
Extreme Weather ◽  
Extreme Weather Events ◽  
Weather Events
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