Accession Number : ADA299410

Title :   Refinements in Cloud Microphysics and 4DDA in Support of Numerical Cloud Prediction.

Descriptive Note : Final technical rept. 1 Jun 93-31 May 95,

Corporate Author : COLORADO STATE UNIV FORT COLLINS DEPT OF ATMOSPHERIC SCIENCE

Personal Author(s) : Cotton, William R.

PDF Url : ADA299410

Report Date : 26 JUL 1995

Pagination or Media Count : 10

Abstract : This AASERT grant supported two students, Michael Meyers for three years and Scot C. Randell Rafkin, for the last six months. Most of the research has been conducted by Mike Meyers developing the new microphysical scheme which was implemented into RAMS. This new scheme allows prediction on both the concentration and mixing ratio of the distribution function for each hydrometeor category making the determination of each hydrometeor size spectra less arbitrary. With More detailed physics the model should have the potential to allow for the evolution of the hydrometeor spectra. The new microphysics also allows prediction of an additional hydrometeor species, hail. Mr Rafkin (formerly Randell) research has been directed towards the development of a convective parameterization valid for numerical models with grid spacings ranging from the mesoscale to GCM-like scales. (AN)

Descriptors :   *CLOUD PHYSICS, *HYDROMETEORS, MATHEMATICAL MODELS, COMPUTERIZED SIMULATION, STOCHASTIC PROCESSES, PARAMETERS, PROBABILITY DISTRIBUTION FUNCTIONS, NUCLEATION, PROBABILITY DENSITY FUNCTIONS, ICE FORMATION, METEOROLOGICAL DATA, MASS FLOW, RAIN, MATHEMATICAL PREDICTION, HAIL, KINETIC ENERGY, CLOUD COVER, CONVECTION(ATMOSPHERIC), CIRRUS CLOUDS, CUMULUS CLOUDS.

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE