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Earth, Planets and Space
Fig. 4 | Earth, Planets and Space

Fig. 4

From: El Niño–Southern Oscillation effect on quasi-biennial oscillations of temperature diurnal tides in the mesosphere and lower thermosphere

Fig. 4

Wavelet power spectra of the GAIA zonal mean zonal wind averaged within 10°S to 10°N at a 100 km and b 60 km altitudes. c Spectrum of the U30 index. The U30 index is the zonally averaged winds at 30 mb over the equator from the CDAS Reanalysis data. It represents the stratospheric QBO at 30 mb altitude. d Periods of the U30 index and QBOs in the GAIA zonal mean zonal wind at altitudes of 60 and 100 km

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