(a) Time evolutions of estimated central pressures (blue, red, green, and purple lines), their 2-h running mean (black line), and the best-track central pressure (brown line) of Goni. The blue, red, green, and purple lines indicate central pressures derived from sea level pressure observations at Yonaguni, Iriomotejima, Ishigakijima, and Miyakojima, respectively. (b) Time evolutions of maximum wind speed (blue line), its 30-min running mean (black line), and the radius of maximum wind (RMW; red line) at 2-km altitude of Goni. Periods I–IV, defined in section 4a and Table 1 of Shimada et al. (2018), are also shown in each panel.
Citation: Journal of the Atmospheric Sciences 76, 1; 10.1175/JAS-D-18-0332.1