Fig. 4: 200-hPa circulation and surface air temperature anomalies associated with dry TP soil moisture conditions. | npj Climate and Atmospheric Science

Fig. 4: 200-hPa circulation and surface air temperature anomalies associated with dry TP soil moisture conditions.

From: Dry soil moisture on the Tibetan plateau drives synchronous extreme heatwaves in Europe and East Asia

Fig. 4

a 200-hPa geopotential height anomalies (shading, unit: gpm) and wave activity flux (vectors, unit: m2 s–2) for June–July–August-averaged composite results based on seven strong dry TP soil moisture years from the ERA5 dataset; 200-hPa geopotential height (shading, unit: gpm) response on day 1 (b) and 200-hPa geopotential height (shading, unit: gpm) and wave activity flux (vectors, unit: m2 s–2) response averaged over days 15–30 (c) to the prescribed heating of key TP region in the linear baroclinic model; d June–July–August-averaged 200-hPa geopotential height (shading, unit: gpm) and wave activity flux (vectors, unit: m2 s–2) response to the dry TP soil moisture condition in the CAM6; e June–July–August-averaged daily maximum 2 m air temperature (shading, unit: °C) response in the CAM6; The green contour indicates the climatological 20 m s–1 zonal wind at 200-hPa for ERA5 dataset (a) and the CAM6 result (d), indicating the location of the westerly jet. Dots in (a), (d), and (e) indicate the significance at the 0.05 significance level. Blue and red boxes indicate the key European and East Asian region, respectively. Dark blue contours show the 3000 m topographic height.

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