What is the temperature at which air becomes saturated with water vapors called?
152784
The first answer is correct, "Dew Point" is the point or temperature at which fog and clouds form.  A high dew point spread is good for pilots, for there is less chance of fog.  When for example the temperature is 80 and the dew point is 45, it means that the moisture in the air will not precipitate out until the ambient air mass temperature lowers.  This is why your car is wet in the morning in damp areas, and fog is common in the morning too.  The dew point is calculated with a sling psychrometer by meterologists, who compare the temperature of a wet bulb and a dry bulb thermometer against a chart of known dew points.
89345
PV=nRT. Standard equation of thermodynamics\n\nPressure * Volumn = constat * Temperator.\n\nA dessicant will remove water from the air, therefore decreases Pressure.  In order for the equation to balance, Temperature will decrease.
503418
vaporization, change of a liquid or solid substance to a gas or vapor. There is fundamentally no difference between the terms gas and vapor, but gas is used commonly to describe a substance that appears in the gaseous state under standard conditions of pressure and temperature, and vapor to describe the gaseous state of a substance that appears ordinarily as a liquid or solid. Although most substances undergo changes of state in the order of solid to liquid to gas as the temperature is raised, a few change directly from solid to gas in a process known as sublimation.\n\nLiquids can also change to gases at temperatures below their boiling points. Vaporization of a liquid below its boiling point is called evaporation, which occurs at any temperature when the surface of a liquid is exposed in an unconfined space. When, however, the surface is exposed in a confined space and the liquid is in excess of that needed to saturate the space with vapor, an equilibrium is quickly reached between the number of molecules of the substance going off from the surface and those returning to it. A change in temperature upsets this equilibrium; a rise in temperature, for example, increases the activity of the molecules at the surface and consequently increases the rate at which they fly off. When the temperature is maintained at the new point for a short time, a new equilibrium is soon established.\n\nThe pressure exerted by the vapor of a liquid in a confined space is called its vapor pressure. It differs for different substances at any given temperature, but each substance has a specific vapor pressure for each given temperature. At its boiling point the vapor pressure of a liquid is equal to atmospheric pressure. For example, the vapor pressure of water, measured in terms of the height of mercury in a barometer, is 4.58 mm at 0°C and 760 mm at 100°C (its boiling point).
1015955
Temperature inversions.  Hot air rises and cold air sinks. Normally they pass through each other, but sometimes the atmosphere just flips over pretty fast. Sorry I don't know the circumstances, but I think it has to do with the proximity of of high density air masses.
577442
The water vapor which is released through the combustion of the gases becomes like fog and converts to water droplets when cooled in the air. This is just like the clouds
1116707
droplets of water that condense on what are called condensation nuclei...which are small particles of matter that are suspended in the atmosphere (sand, sea salt, dirt etc)\n\nwhen the air temperature and dewpoint (the temperature the air needs to be to be "saturated") meet, the air condenses into a liquid form, which then attaches itself to the condensation nuclei....which in turn..gives you your cloud.
304701
3°C\nFeels like : -3°C \nRelative humidity : 93% \nWind : 31 km/h N \nBarometric pressure : 100.7 kPa  \nDewpoint : 2°C
308289
Humidity. Just like a hot and humid day the hot water vapors weigh heavy in those lungs.
1031939
temperature decreases with increase in altitude
45731
when there is a low pressure system that brings all the air towards it
802676
Relative humidity is a term used to describe the quantity of water vapor that exists in a gaseous mixture of air and water.\n\nDefinition\nRelative humidity is defined as the ratio of the partial pressure of water vapor in a gaseous mixture of air and water to the saturated vapor pressure of water at a given temperature. Relative humidity is expressed as a percentage and is calculated in the following manner:\n\nRH = {p_{(H_2O)} &#92;over p^*_{(H_2O)}} &#92;times 100%\n\nWhere symbols in the above equation have the following meaning:\n\n{p_{(H_2O)}} is the partial pressure of water vapor in the gas mixture;\n\n{p^*_{(H_2O)}} is the saturated vapor pressure of water at the temperature of the gas mixture; and\n\nRH_{&#92;,_&#92;,} is the relative humidity of the gas mixture being considered. \n\nYou could get more information from the link below...
456439
Air is heated & rises at the equator. The air is forced to about 30 degrees north & south of the equator at high altitude. It starts to cool at these latitudes and starts to descend. As it descends it is heated due to decreasing antitude and increasing atmospheric pressure. This causes the moisture content in the air to decrease resurlting in typically cloudless skies and little rain. This is called a 'Hadley Cell'.\n\nThese latitudes were called the horse latitudes becuase in the days of sailing ships which were often becalmed in these latitudes, sailors were forced to kill livestock on board ships to conserve water and provide food.
253562
Got to be honest. I became more and more confused about a topic that I used to understand so well with that first response. Although a lot of that is facts, it is overcomplicated at some parts and tough to get a hold on what is actually being described. No disrespect to rizzo though, I realise that everything he wrote is correct so he knows what he's talking about, I just think it would be hard for anyone else to.\n\nMaybe this description will be slightly less dizzying:\n\nAll heat is from the sun. Most of what comes from the sun is short-wave radiation, from 400nm down. Air is not heated very much from the sun, but the ground is. This is because the ground can absorb the short-wave incoming radiation, air cannot (well, only a little bit). The air is mostly heated by the longer-wave radiation that comes from the ground when it gets heated up, which heats the water molecules in the air (that's why humid regions get hotter than dry regions). \n\n*Note: Extremely dry air can be heated too, but that requires continuous exposer to sunlight. As soon as the sun is gone, it gets cold fast. Also it gets colder faster with altitude in dry regions.*\n\nAnyways. Up high, on top of being farther away from the ground, there is also less water molecules to absorb heat (and less molecules total to be heated up at all. So it absorbs less radiation. That is why it is colder. Simple. \n\nNo "adiabatic" mumbo jumbo. But adiabatic cooling is also simple. When air rises, the pressure on it decreases and it expands. The heat will be spread out over more volume, so the air will cool. This is the more complicated reason why the farther away from the ground you get, the colder the air is.\n\nAlso, there is something called an inversion. In this case, the air actually gets hotter as you go up. This happens when a warm air mass is forced up over a denser cold air mass because it is lighter. When this happens, the air is stable (it won't rise). This can result in people getting to choke on their own pollution for a couple of days because the crap they spew up in the air won't rise anymore. It's poetic.
471786
It gets cooler as you go higher in the atmosphere. The water vapour in the air condenses on the dust particles forming tiny water droplets. These droplet float in the air. Such clusters of droplets is what we call clouds.
786378
evaporation is when the liquid form of water eevaporates or becomes water vapor. evaporation is one part of the water cycle and is a very large one. evaporation puts water into the air as a gas called water vapor. this then condenses into tiny droplets, forming clouds. \n\nhope this helps
472646
evaporation... but actually evaporation is when a liquid becomes less dense so the molecules rise into the atmosphere! my answer is clearly the best!!!
161918
Humidity is the concentration of water vapor in the air. The concentration can be expressed as absolute humidity, specific humidity, or relative humidity. A device used to measure humidity is called a hygrometer. A humidistat is used to regulate the humidity of a building with a de-humidifier. These can be analogous to a thermometer and thermostat for climate control. Due to the changing partial pressure of water vapor in air as temperature changes, the water content of air at sea level can get as high as 3% at 30 °C (86 °F), and no more than about 0.5% at 0 °C (32 °F).