Accession Number:

AD0608622

Title:

RADAR HURRICANE RESEARCH.

Descriptive Note:

Final rept. for 1 Sep 63-1 Aug 64,

Corporate Author:

MIAMI UNIV FLA MARINE LAB

Personal Author(s):

Report Date:

1964-08-01

Pagination or Media Count:

82.0

Abstract:

The small-scale motion of radar hurricane echoes in Donna 1960 were studied in great detail. The echo speeds were found to vary sinusoidally with time, the oscillations exhibiting an r2 sub 5 squared phase lag with range, corresponding to a disturbance speed which varied as 1r sub S. The echo crossing angles experience the same oscillations, with phase lag r sub 5 to 12 power. The differences in echo motion inside and outside of spiral bands were studied. A number of cases of spiral-band and squall-line motion were studied and their motion related to hurricane movement, yielding a possible method of predicting the motion of hurricanes when squall-lines are visible on radar. A particular solution to the static temperature equation, which was correlated with spiral bands, was obtained for the case of the hurricane assuming a correspondence between the spiral bands and the minimum temperatures in the hurricane. A survey of airborne hurricane reconnaissance tracking problems and accuracies is also presented, including recommendations for improving the radar position data in the future. An observation of a precipitation-free radar sea-breeze front or thin band which became a part of a hurricane Ginny spiral band is included in the Appendix. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE