Characteristics and Development Mechanisms of Northeast Cold Vortices

<div>Monthly variations for the numbers of NECV processes: (a) unit: day; (b) unit: times. The left <i>y</i>-axis in (a) represents maximum NECVs days in a month, and the right <i>y</i>-axis in (a) represents mean lifetime and annual mean NECV days; the left <i>y</i>-axis in (b) represents the total number of NECVs in 30 years, and the right <i>y</i>-axis in (b) represents the monthly mean and maximum number of NECVs in a year.</div>

Advances in Meteorology

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Figure 5

Figure 5: Characteristics and Development Mechanisms of Northeast Cold Vortices 