Fig. 9: Illustration of the link between North American snow cover and atmospheric circulation over Greenland. | Nature Communications

Fig. 9: Illustration of the link between North American snow cover and atmospheric circulation over Greenland.

From: Summer atmospheric circulation over Greenland in response to Arctic amplification and diminished spring snow cover

Fig. 9

Low spring snow cover causes early depletion of soil moisture over eastern North America (brown shading). The dry conditions that follow produce a warm surface anomaly that persists into July (orange shading). This anomalous heating of the near-surface atmosphere induces a stationary Rossby wave response that propagates northeastward (yellow arrow) and favors high-pressure ridging over Greenland—conditions which are known to augment melt of the Greenland Ice Sheet (blue shading). Red H denotes high pressure; blue L denotes low pressure.

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