Figure 4 | Scientific Reports

Figure 4

From: Warm hole in Pacific Arctic sea ice cover forced mid-latitude Northern Hemisphere cooling during winter 2017–18

Figure 4

Atmospheric response under the 2017–18 sea-ice boundary condition by a numerical simulation in the middle troposphere. (a) Atmospheric deviation fields in February when sea-ice boundary condition over a specific region is set in 2017–18 from those of 1983–84. (a) Bering-Chukchi region, (b) Barents-Kara region, (c) Greenland-Hudson Bay region, (d) the sea ice of all the three regions is set in 2017–18. Contour and shaded are 500 hPa height and surface air temperature deviations respectively. The units are meter and °C. Hatched areas indicate the temperature deviation exceeds 95% confidence level by t-test.

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