23rd Conference on Weather Analysis and Forecasting/19th Conference on Numerical Weather Prediction

Session 9A

 Data Assimilation: Error covariances and hybrid methods
 CoChair: Steven Rugg, Air Force Weather Agency, Offutt AFB, NE
Chair: Zhaoxia Pu, University of Utah, Salt Lake City, UT
10:30 AM9A.1Status report on Rapid Refresh development   wrf recording
Stephen S. Weygandt, NOAA/ESRL/GSD, Boulder, CO; and T. G. Smirnova, M. Hu, J. M. Brown, D. Dévényi, S. G. Benjamin, W. R. Moninger, S. E. Peckham, G. A. Grell, K. J. Brundage, B. D. Jamison, C. W. Harrop, and J. B. Olson
10:45 AM9A.2Application of anisotropic recursive filters to the generation of planetary scale background covariances  extended abstract wrf recording
Yoshiaki Sato, JMA visiting NOAA/NWS/NCEP/EMC, Camp Springs, MD; and R. J. Purser
11:00 AM9A.3Impacts of different background error covariance matrices on 4DVAR data assimilation   wrf recording
Lei Zhang, Univ. of Utah and Lanzhou Univ., Salt Lake City, UT; and C. Qiu and Z. Pu
11:15 AM9A.4A hybrid ensemble Kalman filter approach to data assimilation in a two-dimensional shallow water model  extended abstract wrf recording
Lili Lei, Penn State University, University Park, PA; and D. R. Stauffer
11:30 AM9A.5A Hybrid Data Assimilation System (WRF-VAR and Ensemble Transform Kalman Filter) Based Retrospective Tests with Real Observations  extended abstract
Meral Demirtas, NCAR, Boulder, CO; and D. Barker, Y. Chen, J. Hacker, X. Y. Huang, C. Snyder, and X. Wang
11:45 AM9A.6A comparison of the hybrid and EnSRF analysis schemes in the presence of model errors due to unresolved scales   wrf recording
Xuguang Wang, Univ. of Oklahoma, Norman, OK; and T. Hamill, J. Whitaker, and C. H. Bishop

Wednesday, 3 June 2009: 10:30 AM-12:00 PM, Grand Ballroom East

* - Indicates paper has been withdrawn from meeting

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