The mean 1955 monthly variation of the zonal and meridional wind components, and the wind steadiness are presented for the 500-mb. level, from 20°–40° N. in the longitude of the Hawaiian Islands. The basic wind information used in the construction of these charts was obtained from the daily weather reconnaissance flight on the track designated “Petrel Foxtrot.” Mean monthly 500-mb. wind charts were also prepared for the Hawaiian Islands area from the same wind sample.




Present affiliation–Florida State University.


The research work reported here has been made possible by support of the Geophysics Research Directorate of the Air Force Cambridge Research Center under Contract No. AF19(604)-546.