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Geoscience Letters

Official Journal of the Asia Oceania Geosciences Society (AOGS)

Fig. 3 | Geoscience Letters

Fig. 3

From: Narrow and wide India–Burma trough-like circulations: their different impacts on precipitation over southern China

Fig. 3

700-hPa vorticity anomalies (units: s−1) regressed upon the (a) NIBT and (b) WIBT indices in winter for the period 1979–2019. c and d As in a and b, but for 700-hPa geopotential height anomalies (units: gpm). The green box (15–25 °N, 80–100 °E) in (a and b) is the key region for defining the vorticity-based IBT index. The green boxes (17.5–27.5 °N, 80–100 °E) in c and d are the key region for defining the geopotential height-based IBT index. Shadings denote positive/negative anomalies significant at the 95% and 99% confidence levels as shown by the color bars

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