Figure 4
From: Increasing peak intensity of tropical cyclones passing through the Korean Peninsula
Changes in the large-scale environment. (a), (d), (g) Composite map of vertical wind shear (VWS), relative vorticity (RV), and sea surface temperature (SST) during the Period 1 (1981–2002) in September–October (SO), respectively. (b), (e), (h) same as (a), (d), (g) but for Period 2 (2003–2020) in SO, respectively. (c), (f), (i) Composite difference map in the indicated large-scale environmental parameters between Period 2 and Period 1 in SO, respectively. The dots indicate significance at p < 0.05. In a and b, black lines represent the contour line of VWS (35 ms-1) during Period 1 and Period 2, respectively. In d and f, black lines represent the location of the WNP subtropical high (= 5874 gpm) during Period 1 and Period 2, respectively. The maps are plotted using GrADS v2.2.1 (http://opengrads.org/).
