Interdecadal Variability of Summer Precipitation Efficiency in East Asia

Figure 8

PC2-regressed SSTs in the previous autumn (a), previous winter (b), spring (c), and summer (d) during 2000–2016 (contour interval: 0.1). Previous autumn and winter denote the seasons before one year, which means the PC2-regressed SSTs in autumn and winter between during 1999–2015, respectively. PC2-regressed geopotential height and horizontal winds in boreal summer during 2000–2016 at 200 hPa (e, f) and 850 hPa (g, h). Solid (dashed) contours denote positive (negative) anomalies, and thick solid lines denote zero. Red (blue) color shadings from light to dark indicate statistical significance at the 90%, 95%, and 99% levels. Contour intervals are 5 gpdm in (e) and 2 gpdm in (c). Thick vectors in (f) and (h) denote statistical significance at the 95% confidence level.

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