Browsing OU - Dissertations by Author "Xue, Ming,"
Now showing items 1-6 of 6
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3DVAR and cloud analysis with WSR-88D Level-II data for the prediction of tornadic thunderstorms.
Hu, Ming. (2005)Doppler weather radar observations play a key role in initializing convective storms within storm-scale numerical weather prediction (NWP) models. The radial velocity and reflectivity are the two main parameters measured ... -
4DVAR retrieval of prognostic land surface model variables.
Ren, Diandong. (2004)The major findings of the first type of retrieval are: Initial soil moisture contents as well as deep soil temperature can all be successfully retrieved, for realistic initial guess errors; the relative difficulty in ... -
Analysis of energy conserving low-order models.
Wang, Yunheng. (2007)It is well known in Mathematical Physics that the Volterra gyrostat and many of its special cases including the Euler gyroscope represent a prototype of energy conserving dynamical systems. It is formally proved in this ... -
Effects of nesting frequency and lateral boundary perturbations on the dispersion of limited-area ensemble forecasts.
Nutter, Paul Andrew. (2003)To help restore error variance and LAM ensemble dispersion, a new method is developed to apply statistically consistent LBC perturbations that remain spatially and temporally coherent while passing through the boundaries. ... -
Ensemble Kalman filter assimilation of Doppler radar data for the initialization and prediction of convective storms.
Tong, Mingjing. (2006)Finally, the EnSRF is applied to the May 29-30, 2004 central Oklahoma tornadic thunderstorm case. The initial storm environment is either horizontally homogeneous as defined by a single sounding or is three dimensional as ... -
Retrieval of moisture from GPS slant-path water vapor observations using 3DVAR and its impact on the prediction of convection initiation and precipitation.
Liu, Haixia. (2007)The anisotropic explicit filter is computationally expensive in both CPU time and memory usage. Therefore the implicit recursive filter which is computationally much more efficient is implemented in our 3DVAR system, even ...