Dienstag, 09. April 2024, 16:45 - 18:15 iCal

Vortrag von Adrian TOMPKINS

(ICTP)

"Tropical convective clustering in toy models, serious models, and nature's ultimate model (observations!)"

Over 30 year ago, it was discovered that deep convection in idealized simulations of radiative-convective equilibrium (RCE) using convection permitting models could could undergo a spontaneous transition from a random state to a highly organised state in which convection is clustered in one part of the domain. In the intervening period, we have understood how this clustering can affect the tropical energy budget and how diabatic forcing, in particular cloud-long wave radiative forcing, can lead to clustering. However, the details and onset characteristic of clustering remain highly model-specific.

In this talk, we will show how the characteristics of the bistable random/clustered states can be reproduced in a simple stochastic toy model, and use this to derive a dimensionless parameter that predicts whether a given model will cluster. We will then move to examining aspects of organisation in tropical observations, showing how both clustered and random type situations can be found on the mesoscale in the warm pool region, and how these states relate to tropical wave dynamics. We will argue that understanding convection organisation on the mesoscale is important for understanding basin-wide tropical energy budgets.

 

Vortrag im Rahmen des Meteorologisch-Geophysikalischen Kolloquiums.

 

To the online talk click here: univienna.zoom.us/j/66942796112

Room 2F513 (Exner-Raum)
Josef-Holaubek-Platz 2, UZA 2, 1090 Wien

Vortrag

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To the online talk click here:

Zur Webseite der Veranstaltung

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Veranstalter

Institut für Meteorologie und Geophysik

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Kontakt

Andreas Plach/Herta Gassner
Institut für Meteorologie und Geophysik
53735
img-wien@univie.ac.at

Erstellt am Freitag, 05. April 2024, 08:17
Letzte Änderung am Montag, 15. April 2024, 08:45