What is the central meridian for the Arizona coordinate system, 1983 west zone?

The central meridian for the Arizona Coordinate System 1983 West Zone is indeed 113° 45' 00" west of Greenwich. This central meridian is crucial as it serves as a reference line for surveying and mapping within that specific coordinate system.

When creating a projected coordinate system like this one, the central meridian is selected to minimize distortion in the area being mapped. Choosing 113° 45' ensures a more accurate representation of distances and areas in that particular region of Arizona. The coordinates in this system are expressed in terms of east and north distances from this central meridian, which further facilitates land surveying work by providing a consistent reference.

Understanding the appropriate central meridian is essential for professionals in the field, as the precise meridian affects the calculations and translations of real-world coordinates into map data. This knowledge is fundamental when conducting surveys or interpreting geographic information for any projects within the state.