Evaluations of 404 MHz radar wind profiler observations at Okinawa during TCM-90
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Authors
Dobos, Paul H.
Subjects
Okinawa
Radar wind profiler
Rawinsonde
Regression
Statistics
TCM-90
Tropical cyclone
Typhoon
Wind prediction
Wind ratios
Radar wind profiler
Rawinsonde
Regression
Statistics
TCM-90
Tropical cyclone
Typhoon
Wind prediction
Wind ratios
Advisors
Elsberry, Russell L.
Date of Issue
1992-12
Date
December 1992
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
A comparison of made of rawinsonde and radar wind profiler observations recorded in Okinawa during the Tropical Cyclone Motion (TCM) field experiment. the rawinsondes were launched from Naha, 18.5 km south-southwest of the wind profiler at Kadena AB. An examination of wind speed, and u- and v-components shows the two wind measuring systems to be in excellent agreement. Wind speed differences are less than 1.5 m/s and u- and v-component differences are less than 2 m/s surface wind data recorded 1.5 km from the radar wind profiler site at Kadena are used to derive statistical relationships between the wind at the five lowest profiler range gates and the surface sustained wind and gusts. The accuracy of regression equations derived from the surface and upper-level data is compared to that simple wind ratios derived from the same data. The data are also stratified with respect to daytime versus nighttime, and winds having a trajectory from the ocean versus winds with a trajectory from the land. Although the regression equation generally produce a statistically significant smaller prediction error compared to prediction errors from the ratios, the less than 2 m/s improvement in surface wind estimates in not operationally significant.
Type
Thesis
Description
Series/Report No
Department
Department of Meteorology
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funding
Format
76 p.
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.