Small-scale circulation in regional climate model: the hydrostatic approximation influence

Alexander Titov; Alexander Khoperskov; Konstantin Firsov; Evgeny Baskakov

doi:10.1117/12.2603390

15 December 2021 Small-scale circulation in regional climate model: the hydrostatic approximation influence

Alexander Titov, Alexander Khoperskov, Konstantin Firsov, Evgeny Baskakov

Author Affiliations +

Proceedings Volume 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 119166D (2021) https://doi.org/10.1117/12.2603390
Event: 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2021, Moscow, Russian Federation

Abstract

The regional climate model RegCM 4.9 is deployed on the computer cluster to simulate the region centered in the Lower Volga region, including the Northern Black Sea region and Western Kazakhstan. We present the results of a comparative analysis of the dynamics of small-scale vortex structures in models with vertical hydrostatic equilibrium of the atmosphere and in models without hydrostatic equilibrium based on the full 3D RegCM core. The quality of approximate methods for calculating the radiative transfer in the atmosphere for climate modeling is discussed. The use of the RRTM_LWradiation scheme in RegCM provides an uncertainty well below 1 percent due to the continuum absorption by water vapor in the upward and downward radiation fluxes.

Citation Download Citation

Alexander Titov, Alexander Khoperskov, Konstantin Firsov, and Evgeny Baskakov "Small-scale circulation in regional climate model: the hydrostatic approximation influence", Proc. SPIE 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 119166D (15 December 2021); https://doi.org/10.1117/12.2603390

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