Fig. 2: Dependence of rain rate on TC intensity and SST anomaly. | npj Climate and Atmospheric Science

Fig. 2: Dependence of rain rate on TC intensity and SST anomaly.

From: Strengthening cold wakes lead to decreasing trend of tropical cyclone rainfall rates relative to background environmental rainfall rates

Fig. 2: Dependence of rain rate on TC intensity and SST anomaly.The alternative text for this image may have been generated using AI.

a Scatterplot of the linear trends of SST anomalies and TC rainfall averaged within radii of 100 km, 200 km, 300 km, 400 km, …, and 1000 km from the storm center, from left to right. Blue and red dots denote negative and positive trends of TC rainfall, respectively, which are significantly above the 99% confidence level. Gray dots denote the rainfall trends that fail to pass the significant test. b Bin plot of linear regression coefficients (mm h−1 °C−1) between TC rain rate and SST anomaly (shaded) averaged within a radius of 200 km from TC center, as functions of pre-storm SST and maximum surface wind. The numerical value in each bin denotes the averaged TC rain rate (mm h−1) by the sub-data sample. The vertical and horizontal grid lines denote bins of data samples classified by pre-storm SST and maximum surface wind at intervals of 1 °C and 10 m s−1, respectively. Stippling denotes the bin where the correlation is statistically significant, with black and gray dots representing 99% and 95% confidence levels, respectively. The rainfall data are based on the TRMM product.

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