Fig. 3: Time series of the different parameters.
From: Recent global decrease in the inner-core rain rate of tropical cyclones
a Tropical cyclone (TC) heat potential (TCHP), unit: ×108 J m−2. b Atmospheric stability, unit: K. c Total column water vapor, unit: kg m−2. Moreover, the annual global average rain rate (unit: mm h–1) over, the d Inner- core, and e Outer region of TCs, respectively. The time series in a, b, and c are derived from an average of six ocean basins during the TC peak seasons (Western North Pacific: 120°E–180°,5–30°N, May–December; Eastern North Pacific: 120–90°W,5–30°N, June–October; North Atlantic: 90–20°W,5–30°N, June–October; South Indian Ocean: 50–115°E,5–30°S, November–April; South Pacific: 155°E–180°,5–30°S, December–April; North Indian Ocean: 55–90°E,5–30°N, April–May and September–November). The shading area in all five panels indicate the two-sided 95% confidence levels of the trends, and the bold lines represent the linear regression. The r is the correlation coefficients of the two parameters indicated by the gray arrows, red significant and black insignificant. The rain rates in d & e are constructed using the Tropical Rainfall Measuring Mission (TRMM) Multi-Satellite Precipitation Analysis (TMPA) dataset. All of the linear trends are significant at 95% confidence level.
