LONG ARCTIC INVASION AND EL-NINO–SOUTHERN OSCILLATION
https://doi.org/10.1134/S2587556618040088
Abstract
The statistical relationships of interannual changes in the total duration of Long Arctic Invasion in Atlantic and Pacific sectors of the Northern Hemisphere with the formation of baric ridges between the Arctic and subtropical anticyclones with variations of climate indices of the El Niño–Southern Oscillation (ENSO) process are analyzed. Interannual changes in these indices in the 20th century significantly influenced the variations in the total duration of the considered Arctic invasions in the Pacific sector in February. For most indices, this effect was strongest if their ranks, ahead of the ranks of the processes studied for two months. The revealed relationships, in general, are not stationary and vary depending on the period under review. The relationship of ENSO indices and the total duration of the Arctic invasions in the Atlantic sector in November and October are significant in the 21st century, when the time shifts between these processes were 0–4 months.
About the Authors
A. V. Kholoptsev
Sevastopol Branch, Zubov State Oceanographic Institute.
Russian Federation
Russian Federation
V. A. Semenov
Institute of Geography, Russian Academy of Sciences; Institute of Atmospheric Physics, Russian Academy of Sciences.
Russian Federation
Russian Federation
N. K. Kononova
Institute of Atmospheric Physics, Russian Academy of Sciences.
Russian Federation
Russian Federation
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Graphical Abstract
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1. The total annual duration of arctic blockings lasting 3 days or more in the Atlantic and Pacific sectors | |
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| Type | Исследовательские инструменты | |
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- The statistical relationship of interannual changes in the total duration (TD) of Arctic intrusions with the El Niño–Southern Oscillation (ENSO) in the Pacific sector became in the 21st century less significant than in the 20th century.
- The statistical relationship between TD and ENSO in the Atlantic sector is significant with the time shifts up to 4 months. It is also increasing in the 21st century.
Review
For citations:
Kholoptsev A.V., Semenov V.A., Kononova N.K. LONG ARCTIC INVASION AND EL-NINO–SOUTHERN OSCILLATION. Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya. 2018;(4):22-32. (In Russ.) https://doi.org/10.1134/S2587556618040088
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