Trends and Variability of North Pacific Polar Lows

<table>Number of detected Polar Lows in an average calendar month for the whole 62 PLSs. Tracking with N-S criterion. The error bar is the standard deviation of Polar Low variance in each month during the 62 PLSs.</table>

Advances in Meteorology

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Figure 2

Figure 2: Trends and Variability of North Pacific Polar Lows 