What are the two Airport Based Surface Observation Stations?

The correct answer highlights the two standard types of airport-based surface observation stations: the Automated Weather Observing System (AWOS) and the Automated Surface Observing System (ASOS).

AWOS is designed to provide real-time weather information, which is crucial for pilots and ground operations at airports. It automatically collects data on parameters such as temperature, humidity, wind speed, and visibility, and disseminates this information to users, aiding in flight safety and operations.

Similarly, ASOS is another essential system for reporting surface weather. It is often installed at airports to provide continuous reporting on weather conditions, including similar parameters as AWOS, but is generally more comprehensive and can include additional capabilities such as cloud cover assessment.

Both systems are pivotal in ensuring safe airport operations and are recognized as standardized systems used widely across the aviation industry for surface weather observation.

The other options listed do not accurately reflect the established types of weather observation systems used at airports. For instance, Surface Observation Station and Weather Reporting System are not recognized standards, and terms such as Automated Atmospheric Observation System do not correspond to established systems in use.