Fig. 8From: Narrow and wide India–Burma trough-like circulations: their different impacts on precipitation over southern ChinaAnomalous (a) 200-hPa and b 700-hPa geopotential heights (contours interval: 40, m2 s−2) regressed upon the NIBT index for the period 1979–2019, in which shadings denote positive/negative geopotential height anomalies significant at the 95% and 99% confidence levels as shown by the color bars. Anomalous 700-hPa winds (units: m s−1) are also presented in (b). The anomalous winds significant at the 99% confidence level are highlighted in red. “C” over the BoB denotes the anomalous anticyclone affecting the NIBT. The thick black contour denotes the Tibetan PlateauBack to article page