Marine Stratus—A Boundary-Layer Model

Autor: Peter A. Taylor
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Atmosphere, Vol 15, Iss 5, p 585 (2024)
Druh dokumentu: article
ISSN: 2073-4433
DOI: 10.3390/atmos15050585
Popis: A relatively simple 1D RANS model of the time evolution of the planetary boundary layer is extended to include water vapor and cloud droplets plus transfers between them. Radiative fluxes and flux divergence are also included. An underlying ocean surface is treated as a source of water vapor and as a sink for cloud or fog droplets. With a constant sea surface temperature and a steady wind, initially dry or relatively dry air will moisten, starting at the surface. Turbulent boundary layer mixing will then lead towards a layer with a well-mixed potential temperature (and so temperature decreasing with height) and well-mixed water vapor mixing ratio. As a result, the air will, sooner or later, become saturated at some level, and a stratus cloud will form.
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