IMAGe Brown Bag Seminar - “Toy” Model of Convective Dynamics for Testing Data Assimilation Methodologies

08/02/2017 - 12:00pm to 1:00pm
ML - 680 - Penthouse

“Toy” Model of Convective Dynamics for Testing Data Assimilation Methodologies

Jun-Ichi Yano

CNRM, Météo France, Toulouse

The purpose of this talk is to propose a "toy" model for testing various data assimilation methodologies for convective-scale predictions.

All the major numerical weather prediction (NWP) centers are now running their regional model with horizontal resolutions that marginally resolve individual convective elements. 
Under this new NWP regime, new assimilation strategies are required due to highly transient nature of the atmospheric convective system with much shorter prediction time scale.
The traditional approaches for testing a new assimilation methodology in the preliminary phase is to use a series of Lorenz models (1963, 1982), that qualitatively represent the basic behavior of the synoptic-scale flows.

However, for the convective-scale NWP, these are no longer optimal models for testing, but a new type of "toy" model is required that represents the convection dynamics better.
This talk suggests that the convective energy-cycle system that I have been working on with R. S. Plant serves for this purpose by adding a spatial dependency to its original formulation.

Wednesday, August 2nd, 2017

12:00pm – 1:00pm

Mesa Lab, 680 - Penthouse

(Bring your lunch)