Air Weather Service Research Articles

A method for estimating the height of cirrostratus clouds

Difficulties in estimating the height of cirrus clouds and the rather frequent gross error in the reported estimates have been pointed out from time to time. Until the recent development of operational interest in such high levels, this problem had not been given much attention. An approach to the problem was suggested by the oft‐reported observation of pilots that when cirrostratus is present condensation trails usually form when the aircraft nears the cirrus level. This implied that the contrail‐forecasting chart used by Air Weather Service might also be used to estimate the height of an existing cirrus layer.

Air Weather Service Support to the Korean Effort

Air Weather Service Support to the Korean Effort

An Atmospheric Cross-Section Over the Tropical Eastern Pacific during a Strong Norther, November 16, 1942 *

* Part of the research was performed as inactive duty on-the-job-training on mobilization reserve assignment with the Directorate of Scientific Services of Hq., Air Weather Service, Andrews Air Force Base, Washington, D. C. However, the conclusions and opinions are solely those of the author.

Air weather service sferics operations in the Caribbean Area

A general description of the Air Weather Service sferics network in the Caribbean area is given. Operating principles and reasons for a four‐station network are described. A discussion of general correlations of sferics with weather conditions is given. Finally the trend of development is summarized.

Results of the Air Weather Service Frontal-Analysis Numerical-Scoring Program*

A frontal-analysis numerical-scoring system employed by the Air Weather Service to obtain a more uniform frontal analysis by different forecasters working with identical data is outlined., Although the system is not a substitute for meteorological knowledge and professional experience, it serves as a means to assure the habit of adequate consideration of all factors involved in frontal analysis.