[Vortraege] Ankündigung

talks.mathematik talks.mathematik at univie.ac.at
Tue Jun 17 09:04:41 CEST 2025


Sehr geehrte Kolleg*innen,
Ich darf Ihnen untenstehende E-Mail sowie Attachments weiterleiten.
Eine schöne Woche und beste Grüße
Mag. Irene Berglund

---------------------------------

Subject: Symposium "Math for Meteo" next tuesday 24 June Skylounge 10h - 12h

Dear collegues,

attached details on the Symposium on "mathematics for meteorology" on 
Tuesday 24 June,
concerning the talks of Edriss Titi (U. Cambridge) resp Peter 
Spichtinger (U. Mainz)
on
“The Navier-Stokes, Euler and Other Related Geophysical Equations"
resp
"Ice clouds as nonlinear oscillators”

and 14h15 the PhD defense of SFB student Daniel Bäumer
on
"Asymptotic PDE models of intermediate complexity for large-scale 
dynamics of a moist atmosphere"

everyone welcome !

Norbert J Mauser
head MMM and director WPI

Tue 24 June 10h Skylounge OMP1
Peter Spichtinger (Inst. Atmospheric Physics, U. Mainz)
"Ice clouds as nonlinear oscillators”
Abstract: Ice clouds are, as all clouds, important components of the 
Earth-Atmosphere system, e.g., influencing the energy budget of the 
system via interaction with radiation. However, our understanding of ice 
clouds in the low temperature regime (T<235K) is still limited. For 
investigating ice clouds in a mathematically consistent way, we derive a 
three dimensional system of ordinary differential equations and use 
methods from theory of dynamical systems to analyze this system. 
Surprisingly, the system results into a nonlinear oscillator with two 
Hopf bifurcations and some other symmetries. Although the model is quite 
simple, the agreement with real measurements is quite good, so it might 
be used for further investigations, e.g., in terms of coupled 
oscillators or nonlinear forcings.

Tue 24 June 11h10 Skylounge OMP1
Edriss Titi (DAMTP, U. Cambridge)
“The Navier-Stokes, Euler and Other Related Geophysical Equations"
Abstract: In this talk I will present the most recent advances 
concerning the questions of global regularity of solutions to the 
three-dimensional Navier–Stokes and Euler equations of incompressible 
fluids. Furthermore, I will also present recent global regularity (and 
finite time blow-up) results concerning certain three-dimensional 
geophysical flows, including the three-dimensional viscous 
(non-viscous)“primitive equations” of oceanic and atmospheric dynamics.
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