Research Article

Contribution of Atmospheric Advection to the Amplified Winter Warming in the Arctic North Atlantic Region

Figure 2

(a) Ny-Ålesund temperature from radiosondes 1993 to 2016 averaged between 800 and 850 hPa for different flow directions. Cardinal wind directions were defined as perfect ±45° and at least 75% of winds in the layer had to be within that range. The S − N difference during DJF is shaded. (b) S − N difference in temperature (red, averaged between 800 and 850 hPa) and water vapor content (IWV, blue, vertically integrated up to 200 hPa) for different Arctic locations from the ERA-Interim reanalysis during DJF.
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