Which factor is included under Physical Description of Observation Site to affect weather or climatology?

• A. Nearby bodies of water
• B. Latitude/Longitude
• C. WMO Index Number
• D. Time Zone

Answer: (A)

Nearby bodies of water shape the local weather and climatology by influencing the air the station records. Water’s high heat capacity moderates temperatures—keeping nights warmer in winter and days cooler in summer—and increases humidity, which can enhance fog, dew, and local precipitation patterns. Water bodies also drive local airflows, like daytime sea breezes and nighttime land breezes, which affect wind and temperature fluctuations at the observation site. While latitude/longitude describes location in a broad climate sense and the other options are administrative identifiers, proximity to water is a physical feature that directly alters the observed weather characteristics at the site.