Moisture Model for the Local AFOS MOS (Automation of Field Operations and Services Model Output Statistics) Program

摘要

The moisture model used for the Local AFOS MOS Program (LAMP) is described in the paper. The model predicts the degree of saturation in the single layer between 1000 and 500 mb by a moisture parameter known as the saturation deficit. Moisture is advected under the assumption that no evaporation or condensation occurs along the trajectory. The thickness and elevation of the advected air column determine the degree of saturation. Precipitation is forecast when the air column is saturated. The model forecasts for instantaneous precipitation were compared to those of persistence and advection of initial precipitation.