Convectively Coupled Equatorial Waves: Analysis of Clouds and Temperature in the Wavenumber–Frequency Domain

  title={Convectively Coupled Equatorial Waves: Analysis of Clouds and Temperature in the Wavenumber–Frequency Domain},
  author={Matthew C. Wheeler and George N. Kiladis},
  journal={Journal of the Atmospheric Sciences},
  • M. WheelerG. Kiladis
  • Published 1 February 1999
  • Environmental Science, Physics
  • Journal of the Atmospheric Sciences
A wavenumber-frequency spectrum analysis is performed for all longitudes in the domain 158S‐158N using a long (;18 years) twice-daily record of satellite-observed outgoing longwave radiation (OLR), a good proxy for deep tropical convection. The broad nature of the spectrum is red in both zonal wavenumber and frequency. By removing an estimated background spectrum, numerous statistically significant spectral peaks are isolated. Some of the peaks correspond quite well to the dispersion relations… 

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