Fig. 5: Integrated environmental steering flow from 850 to 500 hPa in the Western North Pacific (WNP) during the mature boreal autumn. | npj Climate and Atmospheric Science

Fig. 5: Integrated environmental steering flow from 850 to 500 hPa in the Western North Pacific (WNP) during the mature boreal autumn.

From: Increasing activity of tropical cyclones in East Asia during the mature boreal autumn linked to long-term climate variability

Fig. 5

a−c Mean 850−500 hPa steering flow during the Period 1 (1981−1997) and Period 2 (1998−2019), and their difference, respectively. d−f Mean 850-500 hPa steering flow during the positive and negative PDO phases, and their difference, respectively. In a, b and d, e, the black contour indicates the position of the WNP subtropical high (= 5875 gpm) during the indicated period.

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