The National Oceanic and Atmospheric Administration (NOAA) is a U.S. federal agency under the Department of Commerce that focuses on understanding and predicting changes in climate, weather, oceans, and coasts. NOAA conducts scientific research, gathers and provides data, and offers forecasts and warnings related to weather, oceanic, and atmospheric conditions across the United States and its territories. It supports various sectors including weather forecasting, marine ecosystems conservation, fisheries management, and natural disaster preparedness. NOAA plays a key role in protecting life, property, and the environment by providing critical information and services nationwide.