Fig. 7: Relationship of the HD index with geopotential height anomalies. | npj Climate and Atmospheric Science

Fig. 7: Relationship of the HD index with geopotential height anomalies.

From: Decadal variability of summer extreme heat in central-eastern China and its synergistic effects by the North Atlantic and tropical western Pacific SST

Fig. 7: Relationship of the HD index with geopotential height anomalies.

Correlation of a 400 hPa, b 600 hPa, c 800 hPa, and d 1000 hPa geopotential height anomalies in the boreal summer in the North Atlantic to East Asia on the decadal timescale during the period 1900–2015. The black dot indicates the significance of the correlation coefficient above the 90% confidence interval.

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