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Implementation of adouble moment cloudmicrophysics schemein the UK met officeregional numericalweather predictionmodel Paul R. FieldAdrian HillBen Shipway2023 год

Implementation of a double moment cloud microphysics scheme in the UK met office regional numerical weather prediction model
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Аннотация: Abstract Cloud microphysics parametrizations control the transfer of water between phases and hydrometeor species in numerical weather prediction and climate models. As a fundamental component of weather modelling systems cloud microphysics can determine the intensity and timing of precipitation, the extent and longevity of cloud cover and its impact on radiative balance, and directly influence near surface weather metrics such as temperature and wind. In this paper we introduce and demonstrate the performance of a double moment cloud microphysical scheme (CASIM: Cloud AeroSol Interacting Microphysics) in both midlatitude and tropical settings using the same model configuration. Comparisons are made against a control configuration using the current operational single moment cloud microphysics, and CASIM configurations that use fixed in‐cloud droplet number or compute cloud droplet number concentration from the aerosol environment. We demonstrate that configuring CASIM as a single moment scheme results in precipitation rate histograms that match the operational single moment microphysics. In the midlatitude setting, results indicate that CASIM performs as well as the single moment microphysics configuration, but improves certain aspects of the surface precipitation field such as greater extent of light (1 mm hr) rain around frontal precipitation features. In the tropical setting, CASIM outperforms the single moment cloud microphysics as evident from improved comparison with radar derived precipitation rates.
Год издания: 2023
Авторы: Paul R. Field, Adrian Hill, Ben Shipway, Kalli Furtado, Jonathan Wilkinson, Annette Miltenberger, Hamish Gordon, Daniel P. Grosvenor, Robin Stevens, Kwinten Van Weverberg
Издательство: Wiley
Источник: Quarterly Journal of the Royal Meteorological Society
Ключевые слова: Meteorological Phenomena and Simulations, Atmospheric aerosols and clouds, Precipitation Measurement and Analysis
Другие ссылки: Quarterly Journal of the Royal Meteorological Society (PDF)
Quarterly Journal of the Royal Meteorological Society (HTML)
Ghent University Academic Bibliography (Ghent University) (PDF)
Ghent University Academic Bibliography (Ghent University) (HTML)
White Rose Research Online (University of Leeds, The University of Sheffield, University of York) (HTML)