Campbell-scientific UT20 and UT30 Tower-based Weather Stations Manuel d'utilisateur télécharger pdf (Page 65)

UT20 and UT30 Tower-based Weather Stations

8.5.18.2 National Geophysical Data Center Web Site

This web site facilitates the task of determining magnetic declination for your

weather station. The web site uses longitude and latitude to determine

declination. Customers located in the US can find their site’s longitude and

latitude. For international customers, a link is provided to help them determine

their longitude and latitude.

FIGURE 8-34. Declination angles east of True North are

subtracted from 360 to get True North

FIGURE 8-35. Declination angles west of True North are

added to 0 to get True North

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Campbell-scientific UT20 and UT30 Tower-based Weather Stations Manuel d'utilisateur Page 65