What does cloud cover measure?

What does cloud cover measure?

• A. Humidity
• B. Wind speed
• C. Air pressure
• D. Cloud cover

Answer: (D)

Cloud cover measures how much of the sky is obscured by clouds at a given time and place. It’s usually described as a fraction of the sky, often expressed in oktas (eight parts of the sky) or as a percent. This is different from humidity, wind speed, and air pressure. Humidity is the amount of water vapor in the air and can influence whether clouds form, but it doesn’t tell you how much of the sky is actually covered. Wind speed describes how fast air is moving, and air pressure is the weight of the air above us. Cloud cover focuses on the visible cloudiness you can see overhead, which affects sunlight and visibility. For example, a day might have high humidity but clear skies (low cloud cover), or be overcast with nearly complete cloud cover even if humidity isn’t extremely high. Measurements come from observers looking up or from instruments and satellites, reported as a percentage or in oktas.

Cloud cover measures how much of the sky is obscured by clouds at a given time and place. It’s usually described as a fraction of the sky, often expressed in oktas (eight parts of the sky) or as a percent. This is different from humidity, wind speed, and air pressure. Humidity is the amount of water vapor in the air and can influence whether clouds form, but it doesn’t tell you how much of the sky is actually covered. Wind speed describes how fast air is moving, and air pressure is the weight of the air above us. Cloud cover focuses on the visible cloudiness you can see overhead, which affects sunlight and visibility. For example, a day might have high humidity but clear skies (low cloud cover), or be overcast with nearly complete cloud cover even if humidity isn’t extremely high. Measurements come from observers looking up or from instruments and satellites, reported as a percentage or in oktas.