ABSTRACT
The global atmospheric ¥ow presented in Chapter 7 supports a variety of features in spatialandtemporalscalesthatformandevolveasaresultofdisturbancesgeneratedbyhydrodynamicalandvertical(dryormoistconvection)instabilities,andbya varietyofwavesresultingfromdifferentrestoringforcemechanisms.Atmospheric oscillationsandwavesphenomenamanifestinmanydifferentforms,forexample, as deviations relative to the mean spatial values of pressure, geopotential, temperatureorwindspeed,anddirectionorasopacityandopticaldepthvariationsifthey haveassociatedaerosolandcloudformation.Chapters8and9dealwithallthese featuresasobservedinplanetaryatmospheres,separatedintotwoparts:oscillations and waves and then instability phenomena.
