Accession Number : AD0734036

Title :   An Experiment in Additional Stratification of Conditional Climatology Summaries for Short-Term Forecast Aids.

Descriptive Note : Aerospace sciences technical note,

Corporate Author : WEATHER WING (3RD) OFFUTT AFB NEBR

Personal Author(s) : Rogers,Dale G.

Report Date : NOV 1971

Pagination or Media Count : 13

Abstract : The paper describes the results of an experiment to utilize two additional parameters in stratifying observational data for conditional climatology (CC) summaries. Conventional CC aids used throughout Air Weather Service stratify hourly observations by month, hour, initial ceiling/visibility category, and final ceiling/visibility category at some later time. Later versions add surface wind direction sectors as a fifth parameter. This note introduces the use of present weather and ceiling/visibility trend over the previous hour as the sixth and seventh variables in determining the conditional probabilities of five ceiling/visibility categories four hours from initial observation. A sample of the output is presented. (Author)

Descriptors :   (*CLIMATOLOGY, *WEATHER FORECASTING), CEILING, VISIBILITY, WIND, PERIODIC VARIATIONS, MILITARY FACILITIES, NEBRASKA

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE