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A microphysically based precipitation scheme for the UK meteorological office unified model
Author(s) -
Wilson Damian R.,
Ballard Susan P.
Publication year - 1999
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49712555707
Subject(s) - mesoscale meteorology , meteorology , cloud computing , precipitation , environmental science , variable (mathematics) , scheme (mathematics) , numerical weather prediction , unified model , computer science , climatology , geology , geography , mathematics , mathematical analysis , operating system
Abstract Many numerical weather prediction models are moving towards more prognostic schemes for the prediction of ice and liquid water contents within clouds. This paper describes a large‐scale cloud and precipitation scheme developed for the UK Meteorological Office's Unified Model. It uses physically based transfer equations to predict ice as a prognostic variable. We review similar schemes and then describe our new scheme, giving examples of its performance in mesoscale forecasts compared with the current operational scheme and with observations. the microphysical processes occurring in a frontal cloud are well modelled. the prediction of supercooled stratocumulus cloud is much improved.