Journal
MONTHLY WEATHER REVIEW
Volume 140, Issue 3, Pages 898-918Publisher
AMER METEOROLOGICAL SOC
DOI: 10.1175/MWR-D-11-00056.1
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Funding
- National Science Foundation
- [CGL-2008-05093/CLI]
- [CGL-2011-29677-C02]
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This study summarizes the revision performed on the surface layer formulation of the Weather Research and Forecasting (WRF) model. A first set of modifications are introduced to provide more suitable similarity functions to simulate the surface layer evolution under strong stable/unstable conditions. A second set of changes are incorporated to reduce or suppress the limits that are imposed on certain variables in order to avoid undesired effects (e. g., a lower limit in u(*)). The changes introduced lead to a more consistent surface layer formulation that covers the full range of atmospheric stabilities. The turbulent fluxes are more (less) efficient during the day (night) in the revised scheme and produce a sharper afternoon transition that shows the largest impacts in the planetary boundary layer meteorological variables. The most important impacts in the near-surface diagnostic variables are analyzed and compared with observations from a mesoscale network.
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