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SUMMARY:Properties of the atmospheric response to tropical heating estimat
 ed from the fluctuation dissipation theorem - Branstator\, G (National Cen
 ter for Atmospheric Research)
DTSTART:20100824T130000Z
DTEND:20100824T140000Z
UID:TALK25901@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:Recent studies have demonstrated the applicability of the Fluc
 tuation Dissipation Theorem to atmospheric response problems in which the 
 external stimulus is a function of space but is constant in time. These in
 vestigations have made clear the utility of the resulting response operato
 rs for addressing questions concerning optimal response\, climate control\
 , attribution and physical mechanisms. In this presentation we explore the
  usefulness of the FDT methodology for response problems in which the impo
 sed forcing is a function of time. \n\nIn our study we concentrate on the 
 effects of time varying tropical heating. First we valid operators designe
 d to match the solutions of AGCMs. Next we use the operators to systematic
 ally explore how the tropical and midlatitude response depends on attribut
 es of the tropical heating including its position\, structure and movement
 . Not only are operators for the response of mean state variables consider
 ed but also operators that give the response of functionals of the state\,
  including eddy variance and fluxes associated with the storm tracks. \n
LOCATION:Seminar Room 1\, Newton Institute
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