Definition
A United States federal scientific agency, part of the Department of Commerce, responsible for monitoring the oceans and atmosphere. In aviation, NOAA is the source of weather data, aeronautical chart products, and the official model of the Earth's magnetic field used to calculate magnetic variation for navigation.
Plain English
A US government agency that studies the oceans, the weather, and the Earth's magnetic field. Pilots rely on its data for forecasts, charts, and the magnetic variation values printed on aeronautical charts.
Context Anchor
Seen in aviation weather references and in instrument procedure discussions about magnetic variation and magnetic north.
Derivation
The name describes the agency's scope: 'oceanic' (relating to the oceans) and 'atmospheric' (relating to the atmosphere). Knowing this helps explain why a single agency provides both weather products and magnetic variation data — the Earth's magnetic field is part of the broader geophysical environment NOAA monitors.
Why Pilots Care
NOAA magnetic variation data keeps navigation accurate and supports safe instrument flight planning.
Intuition Check
NOAA is not the FAA and does not control aircraft or issue pilot certificates. In this context, think of NOAA as a source of environmental and magnetic data that aviation systems may use.
Example Sentence 1
The magnetic variation values shown on sectional charts are based on the World Magnetic Model maintained by NOAA.
Example Sentence 2
Approach plates list magnetic variation values derived from NOAA surveys.