Ensemble Data Assimilation 2006

Program and Presentations for
2^nd Ensemble Data Assimilation Workshop, April 10-12, 2006
Balcones Springs Conference and Resort Center, Maple Falls, Texas
Conveners: Fuqing Zhang and Chris Snyder
Session 0: Grand Introduction (Monday: 8:30-9:00)
Session 1: Radar or convective scale I (Monday 9:00-11:50 with a break)
Session Chair: Dave Stensrud

9-9:30	Dowell (keynote): Assimilating Reflectivity and Doppler Velocity Observations of Convective Storms Into Convection-Permitting Nwp Models
9-9:30	Dowell (keynote): Assimilating Reflectivity and Doppler Velocity Observations of Convective Storms Into Convection-Permitting Nwp Models
9:30	Wicker: Can in Situ Thermodynamic Data Improve the Accuracy of Retrievals Using Enkf Data Assimilation in Convective Storms?
9:50	Break
10:10	Coniglio: Impact of Doppler Radar Observations on the Storm-Scale Analysis and Prediction of a Mesoscale Convective System
10:30	Aksoy: Convective-Scale Ensemble-Based Data Assimilation With WSR-88D Radar Data For Multiple Cases – Preliminary Results
10:50	Xu: Doppler Radar Data Compression and EnKF assimilation
11:10	Zhang: Assimilating Clear-Air Radar Observations with an Ensemble-Kalman Filter
11:30	Discussions

Session 2: Radar or convective scale II (Monday1:00-2:50pm)
Session Chair: Lou Wicker

1:00	Xue (keynote): Ensemble Kalman Filter Assimilation of Radar Data: Several Aspects
1:30	Gao: An Efficient Ensemble Data Assimilation approach of Doppler Radar Data With a Compressible Nonhydrostatic Model
1:50	Mansell: Impact of Microphysics Complexity on Assimilation Results
2:10	Tong: Simultaneous Estimation of Microphysical Parameters and Atmospheric State Variables with Radar Data and Ensemble Kalman Filter Method
2:30	Discussions

Session 3: Regional scales (Tuesday 8:30-10:20)
Session Chair: Josh Hacker

8:30	Hakim (keynote): Performance Characteristics of a Pseudo-operational Ensemble Kalman Filter
9:00	Liu: Exploring application of Radio Occultation measurements in Improving Analyses in traditional data sparse regions with WRF/DART ensemble data assimilation system
9:20	Stensurd: Surface Data Assimilation Using an Ensemble Kalman Filter Approach with Initial Condition and Model Physics Uncertainties
9:40	Meng: Real-Data Assimilation with a WRF-based Ensemble Kalman Filter
10:00	Break

Session 4: Tropical Cyclones (Tuesday10:40-12:00)
Session Chair: John Nielsen-Gammon

10:40	Majumdar: Ensemble-based adaptive sampling and data assimilation issues in tropical cyclones
11:00	Chen: Initializing a Hurricane Vortex with an Ensemble Kalman Filter
11:20	Torn: Using ensemble data assimilation to investigate the initial condition sensitivity of Western Pacific extratropical transition events
11:40	Discussions

Session 5: Large or global scale (Tuesday 7:00-8:50pm)
Session Chair: Sharan Majumdar

7:00	Whitaker: Ensemble Data Assimilation with Global Models - Experiences with the NCEP GFS
7:30	Wang: A Comparison of Hybrid Ensemble Transform Kalman Filter- 3DVAR and Ensemble Square-Root Filter Analysis Schemes
7:50	Szunyogh: Current Status of the Development of the Local Ensemble Transform Kalman Filter at the University of Maryland
8:10	Snyder: Assimilation of the North-American radiosondes with an ensemble Kalman filter and WRF
8:30	Discussions

Session 6: Other applications and development: (Wednesday8:30-10:20)
Session Chair: Istvan Szunyogh

8:30	Hacker: Retrieving PBL profiles with ensemble-filter assimilation: Experiments with real observations, uncovering model behavior, and finding parameter distributions
8:50	Nielsen-Gammon: EnKF Assimilation of Chemical Tracer Information in a 2-D Sea Breeze Model
9:10	Aksoy: Simultaneous State and Parameter Estimation by EnKF
9:30	Discussions
9:50	Break

Session 7: Grand Summary and Discussions (10:10-11:30)
Moderators: Chris Snyder and Fuqing Zhang

Wednesday Afternoon: Workshop Adjourn