When air pressure decreases does water vapor increase or decrease?

Answer 1

The lower the air pressure then more the moisture. When high pressure moves into your area, notice that not very many clouds are present and you get a lot of cooler and drier air. When a low pressure system moves in you will get moist air that generally creates precipitation.

Answer 2

Water vapour will usually increase when air pressure decreases.The reason is given below.
When pressure decreases, a low pressure area forms over that place.Then, the winds from the sorrounding areas will converge at the low pressure area and will be forced to rise.The moisture,if any in the rising air, will condense and form clouds over the place.This cloudiness will trap heat between the clouds and earth and the air becomes more warm.Warm air can hold more moisture and hence will suck more moisture from the sorrounding areas and hence the water vapour will increase.
It can be noticed that whenever there is a well marked low pressure area particularly over land,with cyclonic circulation of upper winds,the areas around it, which are beyond its influence, will not have much cloudiness and have dry air as the moisture from the sorrounding areas are sucked by the low pressure system.
As you go up, you can notice the reverse thing happening.At higher levels,the pressure decreases and the moisture also decreases.But ,the decrease of moisture is not due to pressure but due to decrease of temperature as you go up.Less temperature can hold less moisture only.Hence high clouds like cirrus,cirrostratus or cirrocumulus do not have sufficient moisture to produce any rain.

Answer 3

Water vapour will maximum ordinarily improve whilst air tension decreases.the reason being given below. whilst tension decreases, a low tension self-discipline types over that place.Then, the winds from the sorrounding aspects will converge on the low tension self-discipline and could probable be pressured to upward thrust.The moisture,if any interior the growing to be air, will condense and form clouds over the region.This cloudiness will capture heat between the clouds and earth and the air turns into extra warmth.warmth air can safeguard extra moisture and for that reason will suck extra effective moisture from the sorrounding aspects and subsequently the water vapour will advance. that's spoke of that each and every time there is an outstanding marked low rigidity concern exceptionally over land,with cyclonic circulate of better winds,the aspects around it, that are previous its impact, have not got lots cloudiness and characteristic dry air because of the fact the moisture from the sorrounding aspects are sucked via way of the low rigidity gadget. As you bypass up, which you would be able to desire to grow to focus on the opposite element happening.At bigger ranges,the stress decreases and the moisture additionally decreases.in spite of the indisputable fact that ,the cut back down of moisture isn't because of the fact of rigidity in spite of the indisputable fact that as a results of cut back of temperature as you bypass up.much less temperature can shop much less moisture perfect.subsequently extreme clouds like cirrus,cirrostratus or cirrocumulus don't have adequate moisture to supply any rain.

Answer 4

increase because it will be easier for water molecules to escape from the liquid mass and become gaseous