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UID:20250805T195402EDT-1516guUK3x@132.216.98.100
DTSTAMP:20250805T235402Z
DESCRIPTION: \n\nStudent Seminar Series\n\nDepartment of Atmospheric & Ocea
 nic Sciences\n\npresents\n\na talk by\n\nAditya Baksi\n	PhD student\n\nAtmo
 spheric Turbulence generated by energy at two scales: Balance Dynamics and
  Convective Energy Injection\n\nThe atmosphere gets kinetic energy from ra
 diatively forced temperature gradients at two main length scales: Baroclin
 ic instability at wavelengths ≥ 3000 km (synoptic scales)\, and Convection
  at wavelength between hundreds to a few thousand meters (mesoscales). GCM
  studies\, which are more realistically modeled large scale balanced dynam
 ics\, poorly resolve the convective scales. On the other hand\, Mesoscale 
 models\, which better resolve the convective scales\, don’t generally exte
 nd themselves to planetary scales to properly include the balance dynamics
 .\n\nLilly (1989) suggested that the atmospheric energy spectrum is at lea
 st partly produced by quasi-two dimensional turbulence\, generated by ener
 gy sources at both large and small scales. Nastrom & Gage (1985) observed 
 the atmospheric energy spectra against horizontal wavenumber showing two p
 ower law ranges: a steep -3 slope for synoptic scale range and a shallow -
 5/3 slope for mesoscale range. The study by Kafiabad & Bartello (2018) pro
 duced similar spectra\, but doesn’t include forcing at small scales. Simul
 ations can be designed by forcing at both the scales\, such that they inco
 rporate the effects of both the forward cascade of energy that is leaked f
 rom large scale balance dynamics and the convective injection of unbalance
 d energy at smaller scales.\n\nWednesday Nov 13/ 2.30 PM/ Room 934 Burnsid
 e Hall\n\n \n\n \n\n \n
DTSTART:20191113T193000Z
DTEND:20191113T203000Z
LOCATION:Room 934\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue 
 Sherbrooke Ouest
SUMMARY:Atmospheric Turbulence generated by energy at two scales: Balance D
 ynamics and Convective Energy Injection
URL:/meteo/channels/event/atmospheric-turbulence-gener
 ated-energy-two-scales-balance-dynamics-and-convective-energy-injection-30
 2569
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