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Progress in Earth and Planetary Science
Fig. 10 | Progress in Earth and Planetary Science

Fig. 10

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

Fig. 10

a Time-longitude cross section of anomalies of OLR (shading; unit: W m−2) and 200-hPa velocity potential (contours; unit: 106 m2 s−1) averaged in the tropics [10°S–10°N] from June 1 to August 31, 2021. A 5-day running mean was applied. The positive (negative) anomaly of velocity potential indicates anomalous convergence (divergence) of winds in the upper troposphere and the zero contours were omitted. b, c Phase space diagrams of MJO and BSISO, respectively, during the period of July 11–August 31, 2021 with an interval of 1 day. The dots enclosed by the black border line represent the heavy rainfall period [August 5–20, 2021]

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