strong cold,(c) moderate warm,(d) moderate cold, and (e) normal years. The definitions for five categories of SSTA are the same as that defined by JAS SSTA as shown in Table 1. The unit for contours is 0.1 per pentad
Frequency of TS formation as a function of lat and time (pentad) for (a) strong warm,(b) strong cold,(c) moderate warm,(d) moderate cold, and (e) normal years. The definitions for five categories of SSTA are the same as that defined by JAS SSTA as shown in Table 1. The unit for contours is 0.1 per pentad