DYCOMS-II
type: Concept
in scheme: projects
definition: The Dynamics and Chemistry of Marine Stratocumulus Phase II: Entrainment Studies (DYCOMS-II) is the name given to a field campaign which proposes to collect data for the purposes of testing large-eddy simulations of nocturnal stratocumulus. DYCOMS-II will be based on measurements taken from the NCAR EC-130Q in and around nocturnal marine stratocumulus. The experiment will consist of 9 flights out of North Island Naval Air Station (just west of San Diego) between July 7 and July 28, 2001. Eight of these flights will be nocturnal. For more information about the experimental objectives and strategy, as well as references and contacts click on the appropriate link below. Objectives: 1. The DYCOMS-II field program is designed to collect data to test large-eddy simulations of stratocumulus 2. To test a recently proposed technique to measure large-scale divergence 3. To test our ability to close scalar budgets under ideal situations 4. To increase our understanding and of the statistical signature of the diurnal cycle in marine stratocumulus Strategies: Our basic strategy is to make use of a unique combination of instrumentation and flight plans to measure both the large-scale environment and the turbulent dynamics of summertime, nocturnal, subtropical marine stratocumulus. Instruments: 1. EC-130Q Hercules: This four-engine, medium-size utility turboprop has been modified from a U.S. military tactical aircraft to a versatile and capable research platform that will deliver the scientific instrumentation to the target area. The Hercules has a 10-hour flight endurance, covers a 2,900 nautical mile range at 20,000 ft, and carries a payload of up to 23,000 lb. In addition to the standard sensors that measure atmospheric state parameters, cloud physics, and radiation, the C-130 will be equipped with specialized instrumentation for measuring the state of the atmosphere away from the aircraft. These latter instruments include the Staring (Scanning) Aerosol Backscatter Lidar (SABL)…

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type: Concept