Session 9A Data Assimilation: Error covariances and hybrid methods

Wednesday, 3 June 2009: 10:30 AM-12:00 PM
Grand Ballroom East (DoubleTree Hotel & EMC - Downtown, Omaha)
Host: 23rd Conference on Weather Analysis and Forecasting/19th Conference on Numerical Weather Prediction
Chair:
Zhaoxia Pu, University of Utah, Department of Atmospheric Sciences, Salt Lake City, UT
CoChair:
Steven Rugg, Air Force Weather Agency, Offutt AFB, NE

Papers:
10:30 AM
9A.1
Status report on Rapid Refresh development
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
Recorded presentation

10:45 AM
9A.2
Application of anisotropic recursive filters to the generation of planetary scale background covariances
Yoshiaki Sato, JMA visiting NOAA/NWS/NCEP/EMC, Camp Springs, MD; and R. J. Purser
Recorded presentation

Presentation PDF (630.7 kB)

11:00 AM
9A.3
Impacts of different background error covariance matrices on 4DVAR data assimilation
Lei Zhang, Univ. of Utah, Salt Lake City, UT; and C. Qiu and Z. Pu
Recorded presentation

11:15 AM
9A.4
A hybrid ensemble Kalman filter approach to data assimilation in a two-dimensional shallow water model
Lili Lei, University of Colorado, CIRES Climate Diagnostics Center, Boulder, CO; and D. R. Stauffer
Recorded presentation

Presentation PDF (201.1 kB)

11:30 AM
9A.5
A Hybrid Data Assimilation System (WRF-VAR and Ensemble Transform Kalman Filter) Based Retrospective Tests with Real Observations
Meral Demirtas, NCAR, Boulder, CO; and D. Barker, Y. Chen, J. Hacker, X. Y. Huang, C. Snyder, and X. Wang

Presentation PDF (435.2 kB)

11:45 AM
9A.6
A comparison of the hybrid and EnSRF analysis schemes in the presence of model errors due to unresolved scales
Xuguang Wang, Univ. of Oklahoma, Norman, OK; and T. Hamill, J. Whitaker, and C. H. Bishop
Recorded presentation

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