Abstract: Several different forms of lifted index (LI) calculations are available from the Limited-Area Fine Mesh Model (LFM) and Nested-Grid Model (NGM) run operationally at the National Meteorological Center (NMC). The differences ...

Abstract: Recent developments in meteorological objective analysis have been directed towards improving numerical model initialization, often at the expense of preserving detail in data rich regions. The objective scheme presented ...

Abstract: An explicit technique for computing atmospheric trajectories, based on Greenspan's discrete model formulation, is presented as an alternative to the commonly used implicit scheme. The method provides an economical means ...

Abstract: Overlapping second-order Lagrangian polynomials are used to construct cross-sectional isentropic analyses from upper air sounding observations. Estimates of geostrophic winds are obtained through the thermal wind relationship. ...

Abstract: The recent advancement of mini- and microcomputers into the local-work environment can provide local forecast offices with the capability to run simple numerical models for specific nowcasting and short-term forecast needs. ...

Abstract: An overview of the regularly scheduled sequence of computer analyses and forecasts produced at the National Meteorological Center (NMC) is presented. The available computer resources and time schedule constraints are ...

Abstract: The response of the Regional Analysis and Forecast System (RAFS) low-level forecast fields to the geographical distribution of snow cover is discussed. The errors produced by an improper specification of this field in the ...

Abstract: No abstract available.

Abstract: Retrievals from the VISSR Atmospheric Sounder (VAS) an combined with conventional data to assess the impact of geosynchronous satellite soundings upon the analysis of a pre-convective environment over the central United ...