2 usgs web calculator, Usgs web calculator, From 360 (0) degrees to find true north – Campbell Scientific RAWS-F Remote Automated Weather Station for Fire Weather User Manual
Page 38: From 0 (360) degrees to find true north, Figure 8-2, Figure 8-3. n
RAWS-F Remote Automated Weather Station for Fire Weather
FIGURE 8-2. A declination angle east of True North (positive) is
subtracted from 360 (0) degrees to find True North
FIGURE 8-3. A declination angle west of True North (negative) is
subtracted from 0 (360) degrees to find True North
8.2 USGS Web Calculator
The USGS provides an easy way of determining the declination of a specific
site. Since magnetic declination fluctuates with time, it should be adjusted
each time the wind sensor orientation is adjusted. The calculator can be
accessed at:
shows an example for Logan, UT.
30
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