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RICO Modeling Studies

RICO Modeling Studies. Group interests RICO data required. Group Activities. Microphysical processes on cloud scale (giant aerosol particles, entrainment and mixing-- influence on droplet size distributions and precipitation formation) U. of Illinois U. of Utah NOAA Purdue U.

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RICO Modeling Studies

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  1. RICO Modeling Studies Group interests RICO data required

  2. Group Activities • Microphysical processes on cloud scale (giant aerosol particles, entrainment and mixing-- influence on droplet size distributions and precipitation formation) • U. of Illinois • U. of Utah • NOAA • Purdue U. • Statistics of cloud ensembles & obs to constrain LES of cloud fields • UCLA • Obs to constrain regional-scale parameterizations of shallow clouds and interaction with ambient aerosol • CSU

  3. RICO Data Needed: Characterizing the Environment • Daily (or more frequent) soundings • Rawinsonde data incorporated into GTS for inclusion in NWP analyses & forecasts • Daily horizontal and vertical mapping of aerosol, CCN, and giant/ultragiant aerosol • Temporal evolution of sfc fluxes & state variables at sfc and beneath cloud base • State variables at cloud heights but outside cloud, and above cloud • Profiles of trace gases and aerosol upshear and downshear of clouds • Integrated total water from ship radiometer • Detailed measurements of aerosol and winds beneath cloud bases from ship Doppler lidar

  4. RICO Data Needed: Characterizing the Environment • Within ship-centered control volumes • estimates of surface fluxes and temperature • radiative fluxes at the top and bottom of the control volume, i.e., at the surface and at some level some hundreds of meters above the highest clouds • profiles of the thermodynamic quantities and horizontal winds through the depth of the boundary layer, extending perhaps to 1km above the highest clouds for the purposes of radiative calculations. • turbulent fluxes of heat, moisture and momentum in the sub-cloud layer • cloud and environmental statistics at several levels within the cloud layer • interface statistics indicating the height and variability of the trade inversion and the transition layer often observed at cloud base.

  5. RICO Data Needed: Characterizing the Clouds • Accumulation mode aerosol,CCN, giant/ultragiant aerosol beneath cloud bases • Aircraft documentation of cloud base height and thermodynamic properties • Radar coverage of cloud properties: cloud top heights and widths, echo evolution from initial stages through precipitation formation • Multilevel, in-situ characterization of: • Cloud lwc • Drop size distributions • Temperature • Water vapor • Winds • Dissipation rate of tke

  6. RICO Data Needed: Characterizing the Clouds • Raindrop size distributions and rainrate estimates • Liquid water paths from ship-based microwave radiometer • High-res mapping of in-cloud velocities at different levels in cloud with Wyoming cloud radar

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