An air parcel is unstable if its temperature is and remains higher than the temperature of its surrounding environment as it rises above the ground. When this occurs, the parcel continues to rise. This is known as moist ... More »

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Atmospheric inversion is when the temperature in the atmosphere inverts, making the temperature rise instead of fall in areas higher above the ground. Inversions occur most commonly in the afternoon due to the ground emi... More »

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Atmospheric inversions are parallel layers of air that rise in temperature as they get higher. This warm air is light and lies over cool and heavy air, which makes this air have strong upright stability, particularly whe... More »

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When altitude increases, air temperature decreases. This is because, with an increase in altitude, there is a decrease in air pressure. When air pressure decreases, air cools down. More »

The temperature of atmospheric layers is determined by air composition, movement, and density of each layer. In the troposphere, for example, it is warmer at the base layer because the air absorbs heat from the earth's s... More »

Lightning strikes reach the ground on Earth as much as 8 million times per day or 100 times per second, according to the National Severe Storms Laboratory. Out of all the lightning strikes in the world, the United States... More »

Different types of clouds vary in distance from Earth's surface, but range from quite near the ground to as high as 50,000 feet. Heights of the three main types of clouds also vary depending on latitude. More »