What system is recommended for conducting observations at the official station?

The METAR system is the correct choice for conducting observations at the official station due to its standardized format and comprehensive nature. METAR stands for Meteorological Aerodrome Report and is the internationally recognized method for reporting current weather conditions at airports and other weather station locations. It includes essential data such as temperature, wind direction and speed, visibility, precipitation, and significant weather phenomena. This systematic approach allows for consistency and accuracy in reporting, which is crucial for effective communication among meteorologists, pilots, and other stakeholders in aviation and weather services.

In contrast, local climatic observations may provide valuable information about a specific area but lack the standardized coding and universal acceptance found in the METAR reports, making them less suitable for official use. Personal observations, while potentially insightful, are subjective and may vary significantly between observers, leading to inconsistencies that can undermine the reliability of the data. Visual aids, such as charts or photographs, can enhance understanding but do not serve as a formal method for recording and disseminating weather information in an official capacity. Therefore, the METAR system stands out as the best practice for conducting observations at designated stations.