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Progress in Earth and Planetary Science
Fig. 1 | Progress in Earth and Planetary Science

Fig. 1

From: Coherent amplification of the Okhotsk high, Korean trough, and northwestern Pacific subtropical high during heavy rainfall over Japan in August 2021

Fig. 1

Precipitation in East Asia during the summer of 2021. a Time series of observed precipitation (blue bar; unit: mm day−1) in Kanto (top panel), Kansai (middle panel), and Kyushu (bottom panel), Japan by AMeDAS. Color lines indicate their climatological mean for 1991–2020. Gray and black two-way arrows in each panel denote the Baiu period defined by the JMA and the heavy rainfall period in this study [August 5–20, 2021], respectively. b, c Spatial distributions of period-averaged precipitation anomaly (shading; unit: mm day−1) as deviation from the climatological mean during the heavy rainfall period. Red rectangle in b is the region of area-averaged precipitation over Japan [30°–37°N, 127°–142°E]. In c, white contours indicate ratios of precipitation to its climatological mean (unit: %), and color dots are plotted at the location of the AMeDAS observation stations in Kanto (yellow), Kansai (blue), and Kyushu (red) used for showing the time series in (a)

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