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Humidity is the concentration of water vapor present in the air. ... Thus, the relative humidity will drop by a factor of 2 for each 20 °F (11 °C) increase in ...
This approach is accurate to within about ±1 °C as long as the relative humidity is above 50%: ; (); This can be expressed as a simple rule of thumb: For every 1 °C difference in the dew point and dry bulb temperatures, the relative humidity decreases by 5%, starting with RH = 100% when the dew point equals the dry bulb temperature.
The environmental lapse rate (ELR), is the actual rate of decrease of temperature with altitude in the atmosphere at a given time and location. [6]The ELR is the observed lapse rate, and is to be distinguished from the adiabatic lapse rate which is a theoretical construct.
Humidity is the amount of water vapor in the air. The vapor content of air is measured with devices known as hygrometers. The measurements are usually expressed as specific humidity or percent relative humidity. The temperatures of the atmosphere and the water surface determine the equilibrium vapor pressure; 100% relative humidity occurs when ...
The wet-bulb temperature is the lowest temperature that may be achieved by evaporative cooling of a water-wetted, ventilated surface.. By contrast, the dew point is the temperature to which the ambient air must be cooled to reach 100% relative humidity assuming there is no further evaporation into the air; it is the temperature where condensation (dew) and clouds would form.
• Thunderstorms will rumble from the Ohio Valley to the Northeast on Tuesday before becoming more confined to the East by Wednesday. • In the wake of the storms, much cooler and less humid air ...
Research suggests flu viruses in high humidity can cling to water molecules and then fall out of the air. That prevents viruses from staying airborne. That prevents viruses from staying airborne.
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