Reinterpretation of cloud-topped mixed-layer entrainment closure
نویسندگان
چکیده
منابع مشابه
Large-Eddy Simulation of Evaporatively Driven Entrainment in Cloud-Topped Mixed Layers
Cloud-top entrainment instability (CTEI) is a hypothesized positive feedback between cloud-top entrainment and enhanced turbulence associated with buoyancy reversal. A sufficiently strong positive feedback is hypothesized to lead to the destruction of the cloud. Numerous studies have investigated the possible role of CTEI in cloud breakup, with ambiguous results. In this study, CTEI has been ex...
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The ability of the U.S. Navy’s Coupled Ocean-Atmosphere Mesoscale Prediction System (COAMPSTM) to accurately forecast the height and structure of the Marine Boundary Layer (MBL) in the coastal zone is analyzed and compared to surface and aircraft observations from the Dynamics and Evolution of Coastal Stratus (DECS) field study conducted along the central coast of California from June, 16 to Ju...
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Mixed-layer theory is used to study the diurnal cycle of the stratocumulus-topped boundary layer and its susceptibility to perturbations in atmospheric aerosol concentration. Our results show that the diurnal evolution of cloud thickness is sensitive to the entrainment efficiency. For high entrainment efficiencies, the cloud base tends to descend at a faster rate than the cloud top; this differ...
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Stratocumulus clouds are an integral component of the climate system. They affect both its mean state and variability, and are central to many questions related to climate change. They are also very difficult to represent with fidelity in modern forecast systems and climate models. Their importance is associated with what one may call long-term climatic robustness, which is in marked contrast t...
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How subtropical marine boundary layer (MBL) clouds respond to warming is investigated using large-eddy simulations (LES) of a wide range of warmer climates, with CO2 concentrations elevated by factors 2–16. In LES coupled to a slab ocean with interactive sea surface temperatures (SST), the surface latent heat flux (LHF) is constrained by the surface energy balance and only strengthens modestly ...
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ژورنال
عنوان ژورنال: Tellus A: Dynamic Meteorology and Oceanography
سال: 1987
ISSN: 1600-0870
DOI: 10.3402/tellusa.v39i3.11754