Campbell Scientific CSAT3B CSAT3B Three-Dimensional Sonic Anemometer - Page 73

Appendix A. CSAT3B Orientation

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Appendix A. CSAT3B Orientation A.1 Determining True North and Sensor Orientation The orientation of the CSAT3B negative x-axis is found by reading a magnetic compass and applying the site-specific correction for magnetic declination; where the magnetic declination is the number of degrees between True North and Magnetic North. Magnetic declination for a specific site can be obtained from a USGS map, local airport, or through a NOAA web calculator (Appendix A.2, Online Magnetic Declination Calculator). A general map in FIGURE A-1 taken from www.ngdc.noaa.gov/geomag/img/DeclinationMap_US.png shows magnetic declination for the conterminous United States in 2010. FIGURE A-1. Magnetic declination for the conterminous United States (2010) A-1

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Appendix A. CSAT3B Orientation
A.1 Determining True North and Sensor Orientation
The orientation of the CSAT3B negative x-axis is found by reading a magnetic
compass and applying the site-specific correction for magnetic declination;
where the magnetic declination is the number of degrees between True North
and Magnetic North.
Magnetic declination for a specific site can be obtained
from a USGS map, local airport, or through a NOAA web calculator
(Appendix A.2,
Online Magnetic Declination Calculator
).
A general map in
FIGURE A-1 taken from
www.ngdc.noaa.gov/geomag/img/DeclinationMap_US.png
shows magnetic
declination for the conterminous United States in 2010.
FIGURE A-1.
Magnetic declination for the conterminous United States
(2010)
A-1