CHUCK FRANCIS WIESE
Pilots at 66 Ave, Portland, OR
License number
Oregon A2053298
Issued Date
Nov 2015
Expiration Date
May 2016
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
1515 SW 66Th Ave, Portland, OR 97225
Professional information
Apparatus And Method For Determining Geostrophic Wind Velocity
US Patent:
5372039, Dec 13, 1994
Filed:
Aug 20, 1993
Appl. No.:
8/109648
Inventors:
Chuck F. Wiese - Portland OR
Assignee:
Weatherwise, Inc. - Portland OR
International Classification:
G01N 100
US Classification:
7317016
Abstract:
A geostrophic wind forecasting method determines an atmospheric density (D) and a Coriolis parameter (F) at a given location. The atmospheric pressure is detected at the location over a predetermined period of time (t). The period of time (t), e. g. , two hours, corresponds to the time required for a pressure surface to travel a distance (X) at an empirically determined velocity, e. g. , 35 knots. The change in pressure (. DELTA. P) is detected over the period of time (t). The geostrophic wind velocity (VG) is then determined, according to the invention, based on the following relationship: VG=[1/(D. times. F)]. times. [. DELTA. P/X]. The resulting geostrophic wind velocity (VG) is then displayed. At 35 knots, over a given two hour period, the distance X traveled by the pressure surface is approximately equal to 129,640 meters. The method is embodied in an apparatus that can be associated with a conventional barometer to produce a weather forecasting station.