An evaluation of 700 mb aircraft reconnaissance data for selected northwest Pacific tropical cyclones
Loading...
Authors
Dunnavan, George Milton
Subjects
Tropical cyclones
Typhoons
Hurricanes
Aircraft reconnaissance
Tropical cyclone intensity
Equivalent potential temperature
Moist static energy
Typhoons
Hurricanes
Aircraft reconnaissance
Tropical cyclone intensity
Equivalent potential temperature
Moist static energy
Advisors
Elsberry, R.L.
Date of Issue
1983-09
Date
September 1983
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
The 700 mb aircraft reconnaissance data for 25 selected northwest Pacific tropical cyclones were analyzed and compared with similar data for Atlantic tropical cyclones. Correlations of observed winds and winds calculated from the height gradient indicated that the cyclostrophic equation provided a very good approximation of the observed winds, although the root mean square and bias errors suggested that a gradient wind expression was a slightly better estimate. A wind-radius relationship evaluated by Shea and Gray (1972) for Atlantic cyclones was shown to apply very well for this data set also. Based on the surface pressure-equivalent potential temperature relationship noted by Malkus and Riehl (1960), it is proposed that periods of rapid/explosive deepening are related to the inward transport to the eyewall of "pulses" of high equivalent potential temperature air. The evaluation of the aircraft reconnaissance data from four super typhoons suggests, but does not provide conclusive proof that such pulses do exist.
Type
Thesis
Description
Series/Report No
Department
Meteorology
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.