JW Voyles

Bio: JW Voyles is an academic researcher. The author has contributed to research in topics: Instrumentation (computer programming) & Atmospheric Radiation Measurement Climate Research Facility. The author has an hindex of 1, co-authored 1 publications receiving 1 citations.

PBL State Estimation with Surface Observations, a Column Model, and an Ensemble Filter

Abstract: Following recent results showing the potential for using surface observations of temperature, water vapor mixing ratio, and winds to determine PBL profiles, this paper reports on experiments with real observations. A 1D column model with soil, surface-layer, and PBL parameterization schemes that are the same as in the Weather Research and Forecasting model is used to estimate PBL profiles with an ensemble filter. Surface observations over the southern Great Plains are assimilated during the spring and early summer period of 2003. To strictly quantify the utility of the observations for determining PBL profiles in the ensemble filter framework, only climatological information is provided for initialization and forcing. The analysis skill, measured against rawinsondes for an independent verification, is compared against climatology to quantify the influence of the observations. Sensitivity to changing parameterization schemes, and to prescribed values of observation error variance, is examined. Tem...