Browsing Department of Materials Science and Metallurgy by Author "Hitchcock, Adam Peter"
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The double peak in upwelling and heating in the tropical lower stratosphere.
Ming, Alison; Hitchcock, Adam Peter; Haynes, Peter Howard (American Meteorological SocietyJournal of the Atmospheric Sciences, 2016-04-15)The processes responsible for double peak latitudinal structures in the time averaged tropical lower stratospheric upwelling, centred near 70hPa and 20º N–S, previously noted in ERA-Interim and other reanalysis and model ...
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The downward influence of stratospheric sudden warmings
Hitchcock, Adam Peter; Simpson, Isla R (Journal of the Atmospheric Sciences, 2014-07-14)The coupling between the stratosphere and the troposphere following two major stratospheric sudden warmings is studied in the Canadian Middle Atmosphere Model using a nudging technique by which the zonal mean evolution of ...
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The response of the lower stratosphere to zonally symmetric thermal and mechanical forcing.
Ming, Alison; Hitchcock, Adam Peter; Haynes, Peter Howard (American Meteorological SocietyJournal of the Atmospheric Sciences, 2016-04-15)The response of the atmosphere to zonally symmetric applied heating and mechanical forcing is considered, allowing for the fact that the response may include a change in the wave force (or ‘wave drag’). A scaling argument ...
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Zonally symmetric adjustment in the presence of artificial relaxation
Hitchcock, Adam Peter; Haynes, Peter Howard (American Meteorological SocietyJournal of the Atmospheric Sciences, 2014-06-15)Numerical experiments, presented in a companion paper, have been performed in which the zonal mean state of the stratosphere in a comprehensive, stratosphere-resolving, general circulation model is strongly relaxed (or ...