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Extreme Arctic cyclone in August 2016


Authors:   Akio Yamagami,  Mio Matsueda and Hiroshi L. Tanaka


First Published:   12th  July, 2017



An extremely strong Arctic cyclone (AC) developed in August 2016. The AC exhibited a minimum sea level pressure (SLP) of 967.2 hPa and covered the entire Pacific sector of the Arctic Ocean on 16 August. At this time, the AC was comparable to the strong AC observed in August 2012, in terms of horizontal extent, position, and intensity as measured by SLP. Two processes contributed to the explosive development of the AC: growth due to baroclinic instability, similar to extratropical cyclones, during the early phase of the development stage, and later nonlinear development via the merging of upper warm cores. The AC was maintained for more than 1 month through multiple mergings with cyclones both generated in the Arctic and migrating northward from lower latitudes, as a result of the high cyclone activity in summer 2016.


Link to full paper:  https://rmets.onlinelibrary.wiley.com/doi/10.1002/asl.757


Alternative pdf version:  https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/asl.757

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