Owner's manual

T107 Weather Station
A positive declination is east, while a negative declination is west. The
declination in this example is 12º 24′ or 12.4º. As shown in FIGURE 1-6, the
declination for Logan, UT is east, so True North for this site is 360 – 12.4, or
347.6 degrees.
References
1
EPA, (1987). On-Site Meteorological Program Guidance for Regulatory
Modeling Applications, EPA-450/4-87-013. Office of Air Quality Planning
and Standards, Research Triangle Park, North Carolina 27711.
2
WMO, (1983). Guide to Meteorological Instruments and Methods of
Observation. World Meteorological Organization No. 8, 5th edition, Geneva,
Switzerland.
3
The State Climatologist, (1985) Publication of the American Association of
State Climatologists: Height and Exposure Standards for Sensors on
Automated Weather Stations, v. 9, No. 4 October, 1985.
4
EPA, (1989). Quality Assurance Handbook for Air Pollution Measurement
Systems, EPA Office of Research and Development, Research Triangle Park,
North Carolina 27711.
9