Fig. 4From: Anomalies of air pressure in Serbia as a result of the eruption of the volcano Hunga Tonga–Hunga Ha'apai in mid-January 2022Upper-level structure of the atmosphere (500 hPa geopotential/temperature maps) on January 15, 2022: 00 UTC (a), 06 UTC (b), 12 UTC (c), 18 UTC (d) and on January 16, at 00 UTC (e)Back to article page