DOI: 10.1029/2004jd005367
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Abstract: Abstract. The 2003The -2004 Arctic winter was remarkable in the ∼50-year record of meteorological analyses. A major warming beginning in early January 2004 led to nearly two months of vortex disruption with high-latitude easterlies in the middle to lower stratosphere. The upper stratospheric vortex broke up in late December, but began to recover by early January, and in February and March was the strongest since regular observations began in 1979. The lower stratospheric vortex broke up in late January. Compa…

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