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Earth, Planets and Space
Fig. 7 | Earth, Planets and Space

Fig. 7

From: Extraordinary quasi-16-day wave activity from October 2013 to January 2014 with radar observations at mid-latitudes and MERRA2 reanalysis data

Fig. 7

Filtered Q16DWs in (left column) zonal and (right column) meridional winds at a, b 0.6, c, d 10, e, f 100, and g, h 375 hPa levels along longitude of 115°E in Northern Hemisphere from MERRA2 reanalysis data during 1 September 2013–1 April 2014. The pressure levels of 375, 100, 10 and 0.6 hPa correspond to the altitudes of about 7, 16, 32 and 52 km, respectively. The band-pass filter has the lower and upper cut-off periods of 12.5 and 20 days. The black dashed and dotted vertical lines denote the minor SSW and SFW events, respectively

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