HRD Monthly Science Meeting of January 2018

January’s science meeting consisted of three presentations: Jon Zawislak:  Preliminary results on the sources of condensate in the hurricane outflow layer Sim Aberson:  Observations of gravity waves in tropical cyclones Jason Dunion:  Assessing tropical cyclone intensity change in moderate vertical wind shear using dropsondes: thermodynamics of the lower troposphere All the presentations are available on …

HRD Seminar – Dr. Morgan O’Neill, T. C. Chamberlin Postdoctoral Fellow, University of Chicago – 14 November 2017

Dr. O'Neill presented a seminar on “Diurnal gravity waves as a probe of hurricanes’ internal structure“. Abstract: Satellite observations of cloudy hurricane canopies have shown a universal, daily, wave-like feature that propagates radially outward, as far as 600 km (Dunion et al. 2014). Daytime solar heating of a hurricane’s upper eyewall is surely responsible, but …

HRD Seminar – Dr. Jason Dunion, CIMAS and AOML/HRD – 4 May 2017

Dr. Dunion presented a seminar titled  “The Tropical Cyclone Diurnal Cycle: The Great Hurricane Exhale". Abstract: New geostationary infrared satellite imagery has revealed a curious diurnal pulsing pattern in tropical cyclones (TCs) that may represent an unrealized, yet fundamental process of mature TCs.  These diurnal pulses begin forming in the storm's inner core near the time …