Which term is associated with North/South turn errors in the Northern hemisphere?

The term associated with North/South turn errors in the Northern hemisphere is "UNOS." This acronym stands for "Up North, Over South," which refers to the systematic navigation error that can occur when pilots make a turn from a north heading to a south heading, or vice versa. It highlights the tendency to underestimate the necessary turn or overshoot it as they transition through headings.

Understanding this concept is essential for pilots and navigators as it aids in better flight and navigation planning by reminding them of the potential for error during such maneuvers. The other terms listed may relate to different navigation concepts or errors, but they do not specifically address the North/South turn error in the same context as UNOS.