If you go further into the Earth’s surface and through the atmosphere, the pressure decreases. There are fewer gas molecules as you go up. That’s why the pressure decreases. The result is that the ascending air is expanded, and then cooled. Creating the process of Adiabatic Temperature changes.
Orographic lifting is when elevations, like mountains shield air flow. This can happen because air goes up a mountain slope, then adiabatic cooling plays it’s part in making clouds and precipitation. When the air gets to the leeward side of the mountain, a great amount of the air’s moisture is lost, because it was already used up on the other side of the mountain.
When masses of warm air and cold air combine, they create a front. The colder air acts like a wall that the warmer air can’t get pass, so it rises upward and over the wall of cool air. When this happens, clouds form and condense, creating the process, frontal wedging.
Convergence is when the wind moves and ends up in a horizontal inflow of air into an area. Then, convergent winds that are at a lower level meet with the motion. Air rises and clouds form. An example of convergence is when a cloud hovers over a certain area and makes the converging winds collide, then they rise upward, toward the cloud; creating the process of convergence.
Localized convective lifting is when unequal heating of the earth’s surface causes sections of air to be warmed. This happens when the air is filled with water vapor and it rises to the location where cooler temperatures are and that forms condensation. It almost repeats in a cycle, as you can see in the picture to the right.
An example of Stability is when cool air moves over a warmer area, then the warm surface heats up from the air that is below it. As a result, it will create an air mass that is actually less stable as the temperature changes. Density differences are when there is a change between the density and the water vapor is in the air.
Condensation is the part of the weather cycle that rain drops evaporate from a body of water upward into the air and form clouds. Condensation is the second stage in the water cycle. Condensation takes place after water evaporates into the air.
Cumulonimbus: Thunder clouds Cirrostratus: Thin and wispy Cirrus: Very thin, could look curly Cirrocumulus: Fluffy and small Altostratus: Very wavy looking Altocumulus: Fluffy and are medium sized Stratocumulus: Flat and wide on the bottom and fluffy on the top. Cumulus: Your regular fluffy cloud Stratus: Layered from thick to thin.
They could reach heights from 16,500 ft, to 45,000 feet into the air at mid latitude. When they reach this level, they are made out of ice crystals The clouds that could very well be in this level are cirrus, cirrocumulus, and cirrostratus
These clouds could reach heights from 6,500 ft, to 23,000 ft in the air. In the level below high clouds, these clouds could possibly be made of ice crystals, but are mostly made up of water droplets. Some of the clouds that form at this level could be altocumulus, altostratus, and nimbostratus.
Low clouds can reach heights from 2,500 ft to 8,000 ft into the air In the lowest level, they form from humidity that is held in the air and by water droplets that condense into these clouds. The clouds that are in this level are the common cumulus and stratus clouds.
They are clouds that are vertically formed and they are usually dark looking or stormy looking clouds. They actually look very unusual compared to other clouds
Fog is basically water droplets that form and condense, creating a mist in the Earth’s surface. It disappears when it reaches a certain cool, saturation point.
Cold cloud precipitation is when precipitation happens and water descends down from the clouds, but it’s really cold. This is because the temperature has changed within the cloud to a lower temperature.
Warm air precipitation is when precipitation happens and water descends down from the clouds, but it’s really warm This happens because the humidity that is trapped inside the clouds is really warm, so when it rains, you get warm cloud precipitation.
Rain, snow and sleet are various types of precipitation that can happen within a cloud. If the temperature is warm, the cloud precipitates rain, and if the temperature is cold, the cloud precipitates snow.
Sleet, glaze, and hail are also different forms of precipitation. Sleet and hail are similar, but hail usually comes in thunder storms. Sleet can sometimes comes when it’s raining.