The 4th EnKF Workshop Agenda, April 6-9
Conveners: Fuqing Zhang, Chris Snyder, David Dowell and Ryan Torn
Location: Rensselaerville Meeting Center, Rensselaerville, New York
Tuesday, April 6, 2010
7:30-9:00 Poster session (see list of posters)
Wednesday, April 7, 2010
8:00-8:20 Opening remarks and introduction
Session 1: Satellite data assimilation (Chair: Peter Houtekamer)
8:20 Satellite Radiance Assimilation with an Ensemble Adjustment Kalman Filter. Zhiquan Liu, Craig Schwart, Yongsheng Chen and Xiangyu Huang.
8:40 Assimilation of simulated ABI infrared brightness temperatures using an Ensemble Kalman Filter, Jason A. Otkin and Will Lewis.
9:00 The application of the Local Ensemble Transform Kalman filter in Carbon Cycle study—Assimilation of AIRS CO2 observations in a carbon-climate model, Junjie Liu, Eugenia Kalnay, Inez Fung, Moustafa T. Chahine, and Edward T. Olsen.
Session 2: New algorithm development (Chair: Eugenia Kalnay)
10:10 Doubling the resolution of an ensemble Kalman filter, P.L. Houtekamer.
10:30 Localization and Correlation in Ensemble Kalman Filters, Jeff Anderson
10:50 The importance of error covariance in the core region of a hurricane for dynamically consistent vortex initialization: Can background error be approximated using an axisymmetric model? Jonathan Poterjoy and Fuqing Zhang
11:10 Partially adaptive ensemble covariance localization in ensemble 4D-VAR, Craig Bishop and Dan Hodyss
Session 3: Obs/model error and parameter estimation (Chair: Craig Bishop)
1:30 An adaptive covariance inflation method with the LETKF, Takemasa Miyoshi
1:50 Kalman Filter and Analogs to Improve Numerical Weather Predictions, L. Delle Monache, Gregory Roux, Yubao Liu, and Thomas Warner, Thomas Nipen, Neil Jacobs, Peter Childs, and Roland Stull.
2:10 State-space analysis of model error: a probabilistic parameter estimation framework with spatial analysis of variance, Joshua Hacker, Cari Kaufman, James Hansen
2:30 Ensemble-Based Simultaneous State and Parameter Estimation for Treatment of Mesoscale Model Error: a real data study. Xiao-Ming Hu, Fuqing Zhang and John Nielsen-Gammon
3:10-4:30 Informal Poster session (if the weather prevents outside activities)
3:10-6:00 afternoon break
Session 4: Hybrid and intercomparison I (Chair: Jeff Anderson)
7:30 Hybrid Var/EnDA at UK MET Office. Dale Barker
7:50 Hybrid variational-ensemble data assimilation at NCEP, Daryl T. Kleist, NCEP
8:10 A hybrid ensemble-variational data assimilation system for WRF: recent results for hurricane predictions, Xuguang Wang.
8:30 Comparing variational, ensemble-based and hybrid data assimilations at the regional scales. Meng Zhang and Fuqing Zhang, Xiang-Yu Huang and Xin Zhang.
Thursday, April 8, 2010
Session 5: Hybrid and intercomparison II (Chair: Dale Barker)
8:00 Relationship between Bred Vectors, Singular Vectors, Ensemble Kalma Filter and 4D-Var, Eugenia Kalnay and Shu-Chih Yang with Alberto Carrassi, Matteo Corazza, and Takemasa Miyoshi.
8:20 Preliminary Results with a Direct Minimization of the LETKF Cost Function, Istvan Szunyogh and Eric Kostelich
8:40 Use of Ensemble Data Assimilation information in the ECMWF deterministic analysis, Massimo Bonavita, ECMWF
9:00 A Hybrid Ensemble Kalman Filter Approach to Data Assimilation, Lili Lei and David R. Stauffer.
Session 6: Hurricane Applications (Chair: Takemasa Miyoshi)
10:10 Ensemble predictions of hurricanes with a global model initialized with an EnKF, Jeff Whitaker, Phil Pegion, Tom Hamill and Mike Fiorino.
10:30 ARW/EnKF performance for the 2009 Hurricane Season, Ryan Torn.
10:50 Vortex-Scale Hurricane Data Assimilation: OSSE and Real-Data Results with Airborne Doppler Radar, Dropsonde, and Flight-Level Observations Using NOAA/AOML/HRD’s HWRF Ensemble Data Assimilation System (HEDAS), Altug Aksoy, Tomislava Vukicevic, Kathryn Sellwood, Sylvie Lorsolo, Sim D. Aberson, and Fuqing Zhang.
11:10 Cloud-resolving Ensemble Analysis and Forecast Assimilating Airborne Doppler Radar Observations and real-time performance during the 2008/2009 Atlantic Hurricane Seasons, Yonghui Weng and Fuqing Zhang
Session 7: Regional-scale development and applications (Chair: Jeff Whitaker)
1:30 Ensemble Kalman Filter Assimilation of Coastal and Inland WSR-88D Radar Data and Forecasting for Hurricane Ike (2008) and Tropical Storm Erin (2007). Jili Dong and Ming Xue
1:50 Ensemble Sensitivity Analysis Applied to the Genesis of Typhoon Nuri (2008), Rahul Mahajan and Gregory Hakim.
2:10 Development of an Ensemble Data Assimilation System for Mesoscale Ensemble Prediction, Tadashi Fujita.
2:30 The Ensemble Kalman Filter in the CNMCA regional NWP system: tuning and tests in a pre-operational configuration, Lucio Torrisi, Francesca Marcucci and Massimo Bonavita.
3:10-6:00 afternoon break
Session 8: Radar and convective-scale applications I (Chair: Ming Xue)
7:30 Application of a WRF mesoscale ensemble data assimilation system to severe weather events during springs 2007-2009, Dustan M. Wheatley, David J. Stensrud, and Nusrat Yussouf.
7:50 Multiple radar EnKF analyses of the 29 May 2004 OKC supercell: Further comparisons with dual-Doppler kinematics, Louis J. Wicker.
8:10 Impact of Assimilating Radar Observations on Storm-scale EnKF System within Realistic Mesoscale Environment, Nusrat Yussouf, Dustan M. Wheatley and David J. Stensrud
8: 30 The use of high-resolution EnKF analyses for the diagnostic analysis of supercell storms. Jim Marquis, Yvette Richardson, David Dowell and Paul Markowski
Friday, April 9, 2010
Session 9: Radar and convective-scale applications II (Chair: Lou Wicker)
8:00 Ensemble Kalman Filter Assimilation of WSR-88D and CASA Radar Data for Prediction of a Tornadic Convective System, Nathan Snook Ming Xue and Youngsun Jung.
8:20 Ensemble Kalman Filter Assimilation of Radar Data for a Convective Storm using a Two-moment Microphysics Scheme. Youngsun Jung, Ming Xue and Mingjing Tong
8:40 Thunderstorm-Scale EnKF Analyses Verified with Dual-Polarization, Dual-Doppler Radar Data. David Dowell and Wiebke Deierling
9:00 Demonstration of radar-data assimilation and prediction for Front Range convection, Glen Romine, David Dowell and Chris Snyder (NCAR).
10:10-11:30 Grand discussion (Moderator: Fuqing Zhang)
1:00 Workshop adjourn
List of poster presentations
<![if !supportLists]>2. <![endif]>Geostationary Imagery and its role in improving Tropical Cyclone Structure in NWP, William Lewis.
<![if !supportLists]>3. <![endif]>Development of a “seamless” mesoscale ensemble data assimilation and prediction system, Yubao Liu, Wanli Wu, Linlin Pan, Francois Vandenberghe, Gregory Roux, Will Y.Y., Cheng, Gael Descombes, Hui Liu, Tom Warner and Scott Swerdlin.
<![if !supportLists]>4. <![endif]>Adaptive localization and adaptive inflation with the LETKF, Takemasa Miyoshi.
<![if !supportLists]>5. <![endif]>Prediction of Convective Initiation and Storm Evolution on 12 and 19 June 2002 during IHOP_2002: Ensemble Kalman Filter Assimilation of Multiple Data Sources, Qi-Wei Wang and Ming Xue.
<![if !supportLists]>6. <![endif]>Raising the model top for an ensemble Kalman filter system. Seung-Jong Baek and Peter Houtekamer
<![if !supportLists]>7. <![endif]>The development of a hybrid 3DVAR-EnKF algorithm for stormscale data assimilation, Jidong Gao.
<![if !supportLists]>8. <![endif]>Ensemble Numerical Prediction of the 4-5 May 2007 Greensburg, Kansas Tornadic Supercell and Associated Mesocyclones using EnKF Radar Data Assimilation, Daniel T. Dawson II Louis J. Wicker, Edward R. Mansell.
<![if !supportLists]>9. <![endif]>Understanding differences of two deterministic ensemble Kalman filters, Brian Holland and Xuguang Wang.
<![if !supportLists]>10. <![endif]>EnKF Data Assimilation and Breeding for the Martian Atmosphere, Steven J. Greybush, Eugenia Kalnay, M. J. Hoffman, R.J. Wilson, R.N. Hoffman, K. Ide, T. Miyoshi.
<![if !supportLists]>11. <![endif]>Multi-scale Analysis and Prediction of the 8 May 2003 Oklahoma City Tornadic Supercell Storm Assimilating Radar and Surface Network Wind Observations using EnKF, Ting Lei, Ming Xue and Tianyou Yu.
<![if !supportLists]>12. <![endif]>Radar data assimilation using a hybrid ensemble-variational analysis method for the prediction of hurricane IKE 2008, Yongzuo Li, Xuguang Wang, Ming Xue.
<![if !supportLists]>13. <![endif]>Evaluation of the impact of different observations on forecasting a cold-air-damming event using the NCAR-DART system, Linlin Pan, Yubao Liu, Wanli Wu, Will Y.Y., Cheng, Gael Descombes, Hui Liu, Jeff Anderson, Luca Delle Monache, Neil Jacobs and Peter Childs.
<![if !supportLists]>14. <![endif]>Predictability of the Performance of an Ensemble Forecast System: Predictability of the Magnitude and the Spectrum of the Uncertainties, E. Satterfield and I. Szunyogh.
<![if !supportLists]>15. <![endif]>3DVAR-based Data Assimilation for the 8-9 May 2007 Oklahoma Tornadic Mesoscale Convective System and Comparison with EnKF Results, Alexander D. Schenkman, Ming Xue, and Nathan Snook.
<![if !supportLists]>16. <![endif]>EnKF assimilation of mobile Doppler radar data collected in the 4 May 2007 Greensburg, Kansas cyclic tornadic thunderstorm, Robin L. Tanamachi, David C. Dowell, Louis J. Wicker, Howard B. Bluestein, Stephen Frasier, Kery Hardwick.
<![if !supportLists]>17. <![endif]>Impact of Phased Array Radar Observations on the Analysis of the 29 May 2004 Oklahoma City Supercell Using an Ensemble Kalman Filter, Therese Thompson.
<![if !supportLists]>18. <![endif]>A simple state-dependent multiplicative inflation algorithm, Jeff Whitaker and Tom Hamill.
<![if !supportLists]>19. <![endif]>The Effect of Tropical Cyclone Track Forecast Error on the Structure of the Analyzed Vortex in a Global EnKF, Philip Pegion and Jeff Whitaker.
<![if !supportLists]>20. <![endif]>Evaluation of Planetary Boundary Layer Scheme Sensitivities for the Purpose of Parameter Estimation. John W. Nielsen-Gammon, Xiao-Ming Hu, Fuqing Zhang and John Pleim
<![if !supportLists]>21. <![endif]>Using adaptive localization in ETKF-type Adaptive observation scheme with simple models. Gang Zhao, Ming Xue and Xuguang Wang