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Likewise, warming air decreases the relative humidity. Warming some air containing a fog may cause that fog to evaporate, as the droplets are prone to total evaporation due to the lowering partial pressure of water vapour in that air, as the temperature rises. Relative humidity only considers the invisible water vapour.
Fog is a visible aerosol consisting of tiny water droplets or ice crystals suspended in the air at or near the Earth's surface. [1] [2] Fog can be considered a type of low-lying cloud usually resembling stratus and is heavily influenced by nearby bodies of water, topography, and wind conditions.
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A given value of relative humidity causes larger increases in the heat index at higher temperatures. For example, at approximately 27 °C (81 °F), the heat index will agree with the actual temperature if the relative humidity is 45%, but at 43 °C (109 °F), any relative-humidity reading above 18% will make the heat index higher than 43 °C. [5]
In Australia, heat waves cause more fatalities than any other type of severe weather. [95] The dry conditions that may accompany heat waves can also severely affect plant life as the plants lose moisture and die. [97] Heat waves are often more severe when combined with high humidity. [96]
Tule fog is a radiation fog, which condenses when there is a high relative humidity (typically after a heavy rain), calm winds, and rapid cooling during the night. The nights are longer in the winter months, which allows an extended period of ground cooling, and thereby a pronounced temperature inversion at a low altitude.
Baehr’s other two children were always tired and complained of body aches as well. Baehr, then 39, saw doctor after doctor, but no one had an answer. They suggested cutting out sugar and gluten ...
Mist can be as high as mountain tops when extreme temperatures are low and strong condensation occurs. Freezing mist is similar to freezing fog , only the density is less and the visibility greater. When fog falls below 0°C, it is known as freezing fog, however it still stays suspended.