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He immediately developed a model of this effect, which showed if there was no change in the rate the chemicals were being used, the result would be severe depletion of the ozone layer.
2-rich air flows in from lower latitudes, the PSCs are destroyed, the enhanced ozone depletion process shuts down, and the ozone hole closes. [52] Most of the ozone that is destroyed is in the lower stratosphere, in contrast to the much smaller ozone depletion through homogeneous gas-phase reactions, which occurs primarily in the upper ...
Delivering ozone dissolved in liquids is not straight forward as ozone gas has limited solubility in water or oil. [15] When treating the water or other liquids themselves, the solubility is less of a problem as pure ozone gas can be discharged into the liquid until the desired effect is achieved. Charvet ozone generators in a laundry circa 1903
Ozone remains depleted in the midlatitudes of both hemispheres. The global-average total column ozone amount for the period 1997-2001 was approximately 3% below the pre-1980 average values. Models capture the observed long-term ozone changes in northern and southern midlatitudes.
Ozone is a greenhouse gas, [32] and changes in its atmospheric abundance due to human activity have radiative forcing effects. Ozone absorbs both ultraviolet (UV) radiation from the sun and infrared radiation emitted from Earth's surface. [4] Human activity has depleted ozone in the stratopshere and increased its abundance in the troposphere ...
CFCs had punched a hole in the ozone layer over Antarctica; if left unchecked, the hole would have expanded to the point of eventually threatening all life on Earth.
The largest Antarctic ozone hole recorded (September 1985) 2012 retrospective video by NASA on the Montreal Protocol The Montreal Protocol on Substances That Deplete the Ozone Layer [2] is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion.
The depleting effects of chlorofluorocarbons (CFCs) on ozone over Antarctica has been studied extensively since the 1980s. [7] The low reactivity of CFCs allow it to reach the upper stratosphere , where it interacts with UV-C radiation and forms highly reactive chloride ions that interact with methane. [ 7 ]