B.1 Online magnetic declination calculator
The magnetic declination calculator web calculator published by NOAA’s Geophysical Data
Center is available at:
www.ngdc.noaa.gov/geomag/calculators/magcalc.shtml
. This web page
calculates declination based on the latitude and longitude. You can look up your site's latitude
and longitude by entering the Zip Code or the Country and City, and then clicking the Get & Add
Lat/Lon button (
(p. 89)). Click the Calculate button to get the magnetic declination.
FIGURE B-4. NOAA web calculator
(p. 90) shows that the calculated declination for Logan, UT is 11.78 degrees (11 August
2015). The declination for Utah is positive (east of north), so True North for this site is 360 – 11.78,
or 348.22 degrees. The annual change is – 6 minutes/year or 6 minutes west per year.
Appendix B. Determining True North and wind sensor orientation
89
Summary of Contents for WS-PRO2
Page 9: ...FIGURE 3 4 WS PRO2 bottom layer Section 3 Initial inspection 5...
Page 113: ......
