1 web calculator, Web calculator, Get true north – Campbell Scientific T.Weather T107 Toro Weather Station User Manual

Page 16: True north, N figure 1-7, In figure 1-8

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T107 Weather Station

FIGURE 1-7. Declination Angles East of True North Are

Subtracted From 0 to Get True North

FIGURE 1-8. Declination Angles West of True North Are

Added to 0 to Get True North

1.5.1 Web Calculator

Since magnetic declination fluctuates with time, it should be determined each

time the wind sensor orientation is adjusted. It can be accessed at:

www.ngdc.noaa.gov/geomag-web

Below is an example for Logan, UT.

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