RADAR HURRICANE RESEARCH.
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 1/r sub S. The echo crossing angles experience the same oscillations, with phase lag r sub 5 to 1/2 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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1964
- Accession Number
- AD0608622
Entities
People
- H. V. Senn
- J. A. Stevens
Organizations
- Rosenstiel School of Marine, Atmospheric, and Earth Science