THE OBJECTIVE ANALYSIS OF HUMIDITY. AN UPPER-AIR HUMIDITY DIAGNOSTIC AND ANALYSIS TECHNIQUE
Abstract
A procedure has been developed to selectively diagnose upper-air humidity from surface observations and to utilize both diagnostic and radiosonde data in an objective analysis of dew-point spread using the successiveapproximation technique. Northern-hemisphere surfacesynoptic and radiosonde data from August through October 1964 are used to develop diagnostic relationships between surface-observed variables at a single station and the dew-point spread at the 850-, 700-, 500-, and 400-mb levels above that station for the warm season of the year. The approach consists of two steps: (1) the isolation within a decision-tree framework of those cases for which individual surface-observed variables yield highly reliable estimates of upper-level humidity, and (2) the application of a statistical technique (Regression Estimation of Event Probabilities) to the remaining cases to derive equations yielding probabilities of occurrence of specified categories of dew-point spread. This approach yields useful diagnostic information of variable quality.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1965
- Accession Number
- AD0624135
Entities
People
- Donald A. Chisholm
- John T. Ball
- Keith W. Veigas
- Paul V. Luty
Organizations
- United Technologies Corporation