What's the purpose of wind?

Question

In some areas, it's really windy, some it's barely windy. What does the wind do to help the environment(earth, fauna and flora)?

Answer 1

to blow the bad smells away

Answer 2

Some local winds blow only under certain circumstances, i.e. they require a certain temperature distribution.

Differential heating is the motive force behind land breezes and sea breezes (or, in the case of larger lakes, lake breezes), also known as on- or off-shore winds. Land absorbs and radiates heat faster than water, but water releases heat over a longer period of time. The result is that, in locations where sea and land meet, heat absorbed over the day will be radiated more quickly by the land at night, cooling the air. Over the sea, heat is still being released into the air at night, which rises. This convective motion draws the cool land air in to replace the rising air, resulting in a land breeze in the late night and early morning. During the day, the roles are reversed. Warm air over the land rises, pulling cool air in from the sea to replace it, giving a sea breeze during the afternoon and evening.

Mountain breezes and valley breezes are due to a combination of differential heating and geometry. When the sun rises, it is the tops of the mountain peaks which receive first light, and as the day progresses, the mountain slopes take on a greater heat load than the valleys. This results in a temperature inequity between the two, and as warm air rises off the slopes, cool air moves up out of the valleys to replace it. This upslope wind is called a valley breeze. The opposite effect takes place in the afternoon, as the valley radiates heat. The peaks, long since cooled[vague], transport air into the valley in a process that is partly gravitational and partly convective and is called a mountain breeze.

Forested areas are less windy than plains and cities because the trees disrupt wind patterns. Trees are defined to have a dampening effect on wind speeds in that they reduce the partial derivative of pressure differences across non-infinitively occupying plain. Further effects of trees wind reducing capabilities is in the fact that trees bend in the wind. Considering the mass of a tree in comparison to air particles it is highly predicable that much of the total energy of the wind is lost in kinetic energy to the trees.

Answer 3

It dissipates bad odors.

It takes odors of animals to the animals that need to feed on them so they know where their prey is and can eat and survive.

It spreads seeds to propogate plants.

It sooths us and calms us when it's gentle.

It cools us when the sun is warm.

It does many more things, but I'll leave those for you to figure out.

cw

Answer 4

transfer of heat across planet. in addition, there are lot of free-riders (like pollen, seeds, etc) that go along for the ride. WInd is created by pressure changes related to warm/cold fronts - again - transfer of heat