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Relative Humidity is the ratio of the mass of vapour present in a certain volume of air to the mass of water vapour required to saturate the same volume of air at the same temperature.
Another way of defining relative humidity is related to dew point.
I.e relative humidity=s.v.p at dew point over s.v.p at air temperature multiply by 100%.
And dew point is dependent upon prevalent atmospheric conditions like TEMPERATURE,wind and the amount of water vapour in the atmosphere.
What else can I help you with?
What is the temperature point when air becomes saturated?
The temperature point at which air becomes saturated is known as the dew point. This occurs when the air reaches a relative humidity of 100%, meaning it can hold no more moisture, and condensation begins to form. The dew point varies depending on the amount of moisture present in the air; higher moisture levels result in a higher dew point temperature.
What happens to air pressure when air humidity increases and temperature stays the same?
It will remain the same. (:
What is humid air filled of mostly?
Humid Air. Humidity is the amount of water vapor (Water vapor is the same thing as water gas.) that is in the air. (When one speaks of how humid air is or the humidity in air, one does not count water in the form of droplets, such as the droplets in fog or in a cloud or in steam.) We say the air is humid if there is a lot of water vapor in the air. When there is very little water vapor, then we say the air is dry or it is not humid or we say the humidity is low. Dry air consists of approximately 78% nitrogen, 21% oxygen, 1% argon, .04% carbon dioxide. Besides those gasses, there is another .04% of hydrogen, methane, neon, krypton and other naturally occurring gases. (These are percent by volume, not by weight.) This is a remarkably uniform mixture the world over although the carbon dioxide content has been increasing. The amount of water in the air varies greatly with the average being about 1% by volume. At a normal temperature, for instance 25 C (about 77 F) the air can not hold more than about 4%. (In a kilogram of air, at 25 C, the maximum amount of water is 2 grams.) This means that there is always more nitrogen and oxygen in the air than there is water, even when it is raining. There is no particular amount of water in the air that decides whether one says the air is humid or dry. Because the amount of water vapor that can be in the air depends very much on temperature and pressure, one can not make a general statement about how much water is contained in humid air. Humidity as a number: To be very precise about the quantity of water in air one usually speak of absolute humidity and relative humidity. Absolute humidity is defined as the number of grams of water per cubic meter of air and that number typically varies from zero to about 30 grams. Relative humidity is defined as the percent of water in the air compared to the maximum amount of water that the air could contain at the same temperature and pressure. Thus, relative humidity varies from zero to 100 percent and what constitutes 100% varies a great deal with temperature and pressure.
What conditions in the air favor condensation of water?
saturated air and dewpoint temperature much lower than air temperature
How would temperature and humidity at a given location change when a maritime tropical air mass is replaced by a continental polar air mass?
The temperature would go from being in the 80s and 90s to the 60s and 50s due to the coldness of the polar air. The temperature would decrease. The humidity would decrease also because it goes from being warm and moist to cold and dry.
How does relative humidity change with temperature?
As temperature increases, relative humidity decreases. This is because warmer air can hold more moisture, so the relative humidity percentage decreases as the air temperature rises.
What is the relative humidity of a blizzard?
There is a lot of water content in a blizzard but styli the air temperature is warmer than the dew point temperature so even though there is a blizzard the relative humidity is less than 100% and will depend on how dry the air is
What is relative humidity in terms of moisture and temperature?
relative humidity is the amount of moisture that air can hold in a certain temperature
What is the relationship between relative humidity and temperature?
The relationship between relative humidity and temperature is that as temperature increases, the air can hold more water vapor, leading to a decrease in relative humidity. Conversely, as temperature decreases, the air can hold less water vapor, resulting in an increase in relative humidity.
What was the difference in relative humidity between noon and 5 pm how was the relative humidity affected by air temperature?
Relative humidity typically decreases from noon to 5 PM due to rising air temperatures, which increase the air's capacity to hold moisture. As temperatures rise, the relative humidity can drop even if the absolute amount of moisture in the air remains constant. This results in a lower relative humidity reading in the afternoon compared to midday. The specific difference in relative humidity would depend on the actual temperature and moisture content at those times.
Relative humidity changes with?
Relative humidity changes with temperature and amount of water vapor in the air. As temperature increases, air can hold more water vapor, resulting in a decrease in relative humidity. Conversely, as temperature decreases, relative humidity increases as the air becomes saturated with water vapor.
How does relative humidity vary with changes in temperature?
Relative humidity is the amount of water vapor in the air compared to the maximum amount the air can hold at a given temperature. As temperature increases, the air can hold more water vapor, so relative humidity decreases. Conversely, as temperature decreases, the air can hold less water vapor, so relative humidity increases.
What will Lowering air temperature will do to relative humidity?
Lowering air temperature will increase the relative humidity, assuming the amount of water vapor in the air remains constant. This is because colder air has a limited capacity to hold moisture, so the relative humidity will increase as the air temperature decreases.
What term refers to the temperature at which the relative humidity is 100?
That would be "dewpoint"...When the air temperature falls to the dewpoint (or dewpoint rises to the air temperature), then you have 100% relative humidity.
Why relative humidity does not give an accurate indication of the actual amount of water vapor in the air?
Because it is relative to temperature!
What is the amount of water vapor in the air compared to the amount that could be in the air at that temperature?
Relative humidity is a measure of the amount of water vapor present in the air compared to the maximum amount of water vapor that could be present at a given temperature. It is expressed as a percentage, with 100% relative humidity meaning the air is saturated with moisture.
Is a measure of water vapor in the air compared to the amount that could be held at a specific temperature?
This is the measure of relative humidity. At 50 percent relative humidity, the air is holding half of what it could. It is relative humidity because it is related to the temperature and pressure of the air.
