Fig. 2: Wave packet characteristics in the middle and lower stratosphere during two QBO disruptions (MLS data). | npj Climate and Atmospheric Science

Fig. 2: Wave packet characteristics in the middle and lower stratosphere during two QBO disruptions (MLS data).

From: Dynamic configuration before quasi-biennial oscillation disruptions revealed from the perspective of planetary waves

Fig. 2: Wave packet characteristics in the middle and lower stratosphere during two QBO disruptions (MLS data).

Top panels: correlation coefficients of PW amplitudes during corresponding period between adjacent latitudes at (a) 10 hPa during 2015/16D, and (b) 8 hPa during 2019/20D; Middle Panels: time-longitude sections of GPH anomalies at 10 hPa at (c) 27.5°N, and (e) 22.5°N during 2015/16D and GPH anomalies at 8 hPa at (d) 17.5°S, and (f) 12.5°S during 2019/20D; Bottom panels: time-longitude sections of 38 hPa meridional EP flux (g) at 17.5°N during 2015/16D, and (h) at 17.5°S during 2019/20D. The periods for subsequent analysis are bracketed by vertical dashed black lines in (g, h). The red curves superimposed on (c–e) and (g, h) represent the zonal mean zonal wind at the corresponding pressure levels. The black dots indicate where the anomalies are more than one standard deviation above the climatology in (c–h).

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