Fig. 10: Schematic diagram of the synergistic effect of the VM and the NTA SST on the winter–spring cold events in eastern NA. | npj Climate and Atmospheric Science

Fig. 10: Schematic diagram of the synergistic effect of the VM and the NTA SST on the winter–spring cold events in eastern NA.

From: The synergistic effect of the North Pacific and the North Tropical Atlantic sea surface temperature on winter–spring cold events in Eastern North America

Fig. 10

Shadings over the North Pacific and the North Tropical Atlantic denote the patterns of the positive VM and the negative NTA, respectively. The blue box filled with blue oblique lines indicates the negative SAT anomalies in eastern NA. The blue vectors over eastern NA indicate the anomalous cyclone. The yellow vectors over the North Atlantic represent the positive feedback between the NAO and the NTA SST. The red (blue) circles with “A” (“C”) represent the positive (negative) the geopotential height anomalies at 200 hPa, the indicator of the atmospheric bridge. The yellow oval indicates the anomalous Rossby wave source related to the VM.

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