Dresden 2026 – wissenschaftliches Programm

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UP: Fachverband Umweltphysik

UP 5: Modelling and Prediction Across Scales

UP 5.1: Hauptvortrag

Dienstag, 10. März 2026, 14:00–14:30, MER/0002

A path to seamless modelling of the convective atmospheric boundary layer — •Mirjana Sakradzija — Ludwig Maximilian University of Munich, Germany

Numerical weather prediction (NWP) has reached operational grid spacings of less than 1 km at several leading weather centres. The possibility of using the same model configuration across various applications and spatial scales, ranging from local large-eddy-resolving cases to global NWP and climate simulations, is now a reality. I will explore one such possibility by using an operational NWP model at sub-km resolutions and examining its ability to represent relevant processes in the atmospheric boundary layer (ABL) compared with standard large-eddy simulations, and micro- and sub-mesoscale meteorological observations. Next, I will discuss the current state of development of a unified parameterization of ABL turbulence, convection, and clouds, and the prospects for a smooth transition from parameterized to resolved scales. The importance of land-atmosphere coupling emerges at all spatio-temporal scales as the key forcing factor for the ABL and one of the largest sources of uncertainty in both modelling and observations.

Keywords: Atmospheric Boundary Layer; Seamless Prediction; Turbulence, convection and clouds