AltitudeNone

"AltitudeNone" refers to a specific concept indicating that there is no altitude or elevation above a reference point, typically sea level. In aviation and meteorology, it may suggest conditions or measurements taken at ground level. The term emphasizes the absence of altitude variation, often used in contexts like aviation safety, where understanding the precise location relative to sea level is crucial for navigation and operations. Essentially, it highlights scenarios where elevation doesn't apply, focusing attention on ground-level conditions and their relevance.