May 16 – 19, 2022
Utrecht
Europe/Amsterdam timezone

How well can we simulate mesoscale cloud organisation as observed during EUREC4A ?

May 19, 2022, 9:45 AM
15m
Public Library (Utrecht)

Public Library

Utrecht

Neude 11, 3512 AE Utrecht, the Netherlands

Speakers

Pier Siebesma (Delft University of Technology) Louise Nuijens (TU Delft)

Description

It has become clear over the last couple of years that shallow cumulus convection over the subtropical oceans has a strong tendency to develop itself into a rich variety of spatial cloud structures. It is particular challenging to simulate these mesoscale cloud patterns. On the one hand, it requires turbulence resolving resolutions of 100 m to represent the vertical convective mixing processes while at the same time domains of several hundreds of kilometres are required to represent the large mesoscale cloud structures.
In this study we present a number of simulations techniques ranging from idealised Large Eddy Simulations (LES) with periodic boundary conditions to simulations with operational Storm Resolving Models (SRMs) and assess their capability to reproduce the mesoscale structures such as observed during the EUREC4A period.

Primary authors

Pier Siebesma (Delft University of Technology) Louise Nuijens (TU Delft)

Co-authors

Frans Liqui-Lung (Monash University) Allesandro Savazzi (Delft University of Technology) Fredrik Jansson (Delft University of Technology) Wim De Rooij (KNMI) Bert Van Ulft (KNMI)

Presentation materials

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