This is why the dew point is so much more useful than humidity. Quickly view the current conditions for the Vancouver (Tsawwassen) - Nanaimo (Duke Point) route to make sure you have the latest status on your sailing. Whereas a 50 humidity will feel different depending on the temperature. When talking about a certain day feeling "muggy" or "sticky," the dew point temperature is the more accurate term to use. A 50F (10C) dew point will always feel comfortable outside regardless of the temperature or humidity. In short, the dew point is an accurate measurement of the moisture content in the air. The National Weather Service defines dew point as the temperature to which air must be cooled to in order to reach saturation, assuming air pressure and moisture content are constant.
Knowing the dew point can help achieve long-term preservation of collection materials for libraries, museums, and archives. The further apart these values are, the lower the humidity.ĭew point is the term that most meteorologists use to describe the amount of moisture in the air. Use the sliders to explore combinations of temperature (T), relative humidity (RH), and dew point (DP) to compare the preservation quality of your environment. The closer these values are, the higher the humidity. Without explaining the equation variable by variable, we can simply state that the relative humidity is determined by how close the air temperature is to the dew point temperature. Relative humidity is calculated using meteorological variables such as vapor pressure, saturation vapor pressure, temperature and dew point. Explore > Could Niagara Falls completely freeze?
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