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The value of point-scale measurements of soil moisture in planetary boundary layer simulations.
(2001)
This study also investigates the sensitivity of ground heat flux estimates at NORM to naturally occurring variability in soil-water content from field samples as well as instrumentation biases associated with the in situ ...
Effects of nesting frequency and lateral boundary perturbations on the dispersion of limited-area ensemble forecasts.
(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. ...
The effects of wind shear on convective boundary layer entrainment.
(2004)
24 large eddy simulations (LES) were conducted for CBLs growing under varying conditions of surface buoyancy flux, free atmospheric stratification, and wind shear. With the intent of elucidating the effects of surface layer ...
Alterations in land surface-atmosphere processes resulting from the 1988 Greater Yellowstone Area fires.
(2004)
Meteorological observations for the 10-year period 1984 to 1993 have been collected from 178 stations within the GYA, quality assured, and spatially and temporally interpolated to produce gridded data suitable for model ...
Measurements and modeling of the Great Plains low-level jet.
(2003)
This dissertation describes a project to elucidate the turbulent and momentum structure of the Great Plains Low-Level Jet (LLJ), primarily by the use of Doppler radar. Simple theoretical and numerical models of the LLJ are ...
North Atlantic winter surface extratropical cyclone track variability on interannual-to-decadal time-scales.
(2004)
The variability of cyclone activity at interannual and decadal-to-multidecadal time-scales is examined. First, interannual cyclone variability is classified into three major modes based on a VARIMAX Rotated Principal ...
Ensemble Kalman filter assimilation of Doppler radar data for the initialization and prediction of convective storms.
(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 ...
The impact of radar data assimilation on the Chorwon-Yonchon 1996 heavy rainfall event.
(2003)
One of the most effective tools for observing the atmosphere at fine scales is the Doppler radar. In recent years, considerable research has been directed toward using radar data as a component of numerical prediction model ...
Closures of the surface energy budget.
(2000)
Results outline appropriate procedures for limiting instrument and system error in measurement of the surface energy budget. A systematic error was identified from an examination of closure at ten OASIS sites, and a ...
Intraseasonal variability of the North American monsoon over Arizona.
(2004)
Another aspect of intraseasonal variability is the daily persistence of regimes. DR is the most persistent regime, followed by CEMR, NDR, EMR, and CEMSR. Occasionally, sharp changes in storm coverage precede or follow a ...