Is there variation in ozone distribution?

            The ozone layer covers the entire earth and protects it like a shield from the hazardous rays of the sun. While the ozone shield is formed around the globe, the thickness of the layer is not the same throughout.

            The ozone in the layer is distributed unequally as it is minimum in thickness near the earth’s surface and in the exosphere. Most of it is concentrated in a layer located in the stratosphere several kilometres above the surface of the earth. The thickness of the ozone layer in a vertical column from the surface to the top of the atmosphere is called the total column ozone amount.

            Total ozone varies with latitude over the globe, with the largest values occurring at middle, and high latitudes during all seasons. Total ozone also varies with the seasons, and is in general thicker in spring and thinner during autumn in the northern hemisphere.

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