0 the temperature at which air can no longer hold all the water in it, and the water starts to form drops on surfaces -- 露點，露點溫度（空氣中所含的氣態水達到飽和而凝結成液態水所需要降至的溫度）
Low dewpoint derechos are essentially organized bands of successive, dry downbursts.
With a growing demand on the amount of measurements taken the psychrometer is now replaced by a dewpoint gauge known as a dewcheck.
The temperature was 60 degrees, the dewpoint 59, and the relative humidity 97%.
Within the station model, the temperature, dewpoint, wind speed and direction, atmospheric pressure, pressure tendency, and ongoing weather are plotted.
Chilled mirror dewpoint hygrometers are some of the most precise instruments commonly available.
For a given dewpoint and its corresponding absolute humidity, the relative humidity will change inversely, albeit nonlinearly, with the temperature.
Warmer air is cooled below its dewpoint, and the excess water vapor condenses.
Elements in the plot show the key weather elements, including temperature, dewpoint, wind, cloud cover, air pressure, pressure tendency, and precipitation.
