Brian Mapes' seminar

• Títol del seminari: THE ANNUAL CYCLE: Strides, steps and stumbles in the march of the seasons
• Conferenciant: Professor Brian Mapes
• Lloc de procedència del conferenciant: University of Miami - RSMAS
• Organitzador: Dept. d'Astronomia i Meteorologia
• A/e de contacte: ileanablade@ub.edu (Ileana Bladé)
• Data: Dimarts, 10 de gener de 2006
• Hora: 11:00
• Lloc: Seminari planta 7, Facultat de Física
• Resum: The mean annual cycle at daily resolution is examined in several observed climate data sets, and climate model output. For each variable at each location, the 365-day time series has been spectrally analyzed using harmonic and wavelet analysis. The great "strides" of the annual march are captured in annual and semi-annual Fourier harmonics. Wavelet analysis is used to capture shorter-period features, and estimate their statistical significance. These wavelet-detected features include robust famous "steps" such as monsoon onsets, but also some mysterious high-frequency "stumbles" (called 'singularities' in older climatology literature). Of course, the data also have a lot of meaningless random sampling noise, so this is a useful 'laboratory' for practicing statistical significance tests.

• Títol del seminari: Research on Hurricane Katrina and her cousins
• Conferenciant: Professor Brian Mapes
• Lloc de procedència del conferenciant: University of Miami - RSMAS
• Organitzador: Dept. d'Astronomia i Meteorologia
• e-mail de contacte: ileanablade@ub.edu (Ileana Bladé)
• Data: Divendres, 30 de setembre 2005
• Hora: 13:00
• Lloc: Aula 212 de la Facultat de Física
• Resum: Hurricane research is divided into questions of formation, motion, and intensity. Intensity change was studied in a large experiment based at UM this year. Three coordinated aircraft with Doppler radars flew in Katrina and other storms.