Accession Number : AD0769748

Title :   Synoptic Investigation of East Coast 'Back-Door' Cold Fronts.

Descriptive Note : Master's thesis,


Personal Author(s) : Bellemer,Gordon Allen

Report Date : DEC 1973

Pagination or Media Count : 61

Abstract : Results are presented from a synoptic study of 'back-door' cold fronts along the east coast of the United States in the years 1963 to 1972. The investigation sets forth the climatology of back-door cold fronts with respect to: (1) frequency, (2) six hourly speed of movement, and (3) southern penetration. The individuality of fronts is treated with respect to: (1) temperature and dew-point changes, (2) pressure tendencies, (3) windshifts, (4) precipitation, (5) vertical extent, and (6) surface/500-mb relationships. Findings include: (1) highest frequency of occurrence is late spring and early fall, (2) speed of movement is greatest in nighttime hours and in spring and fall, (3) deep southern penetration is most likely to occure in June, (4) precipitation is more associated with a 500-mb short-wave trough and position and/or motion of the surface front, (5) fronts continue southward penetration until parallel to 500-mb flow and (6) southernmost penetration of fronts is coincident with movement of the high center behind (i.e., north of) the front eastward off the coast. A detailed discussion of the 2 April 1963 case is presented. (Author)

Descriptors :   (*Air mass analysis, United States), Atmospheric temperature, Dew point, Atmospheric motion, Barometric pressure, Atmospheric precipitation, Seasonal variations, Theses, Coastal regions

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE