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The ozone layer peaks at 8 to 15 parts per million of ozone, [1] while the average ozone concentration in Earth's atmosphere as a whole is about 0.3 parts per million. The ozone layer is mainly found in the lower portion of the stratosphere, from approximately 15 to 35 kilometers (9 to 22 mi) above Earth, although its thickness varies ...
One example is the null cycle that occurs during the day between NO x and ozone. Tropospheric Null Cycle O 3 + NO → O 2 + NO 2. NO 2 + hν → NO + O(3 P) O (3 P) + O 2 + M → O 3 + M Net: hv → H This cycle links ozone to NOx in the troposphere during daytime. In equilibrium, described by the Leighton relationship, solar radiation and the ...
NO 2 also reacts with ozone to form nitrate radical NO 2 + O 3 → NO 3 + O 2. During the daytime, NO 3 is quickly photolyzed back to NO 2, but at night it can react with a second NO 2 to form dinitrogen pentoxide. NO 2 + NO 3 (+M) → N 2 O 5 (+M). N 2 O 5 reacts rapidly with liquid water (in aerosol particles or cloud drops, but not in the ...
Ozone in the ozone layer filters out sunlight wavelengths from about 200 nm UV rays to 315 nm, with ozone peak absorption at about 250 nm. [55] This ozone UV absorption is important to life, since it extends the absorption of UV by ordinary oxygen and nitrogen in air (which absorb all wavelengths < 200 nm) through the lower UV-C (200–280 nm ...
[1] [2] Ozone is also an important constituent of the stratosphere, where the ozone layer (2 to 8 parts per million ozone) exists which is located between 10 and 50 kilometers above the Earth's surface. [3] The troposphere extends from the ground up to a variable height of approximately 14 kilometers above sea level.
FILE - In this NASA false-color image, the blue and purple shows the hole in Earth's protective ozone layer over Antarctica on Oct. 5, 2022. Earth’s protective ozone layer is slowly but ...
This relationship also demonstrates how high concentrations of both ozone and nitric oxide are unfeasible. [4] However, NO can react with peroxyl radicals to produce NO 2 without loss of ozone: RO 2 + NO → NO 2 + RO. thus providing another pathway to allow for the buildup of ozone by breaking the above null cycle.
Diagram illustrating the ozone-oxygen cycle NOTE: the text in the final version can't be modified but earlier versions can be if you wish to translate them. Date: 27 January 2010, 20:56 (UTC) Source: Ozone_cycle.jpg; Author: Ozone_cycle.jpg: created by NASA; derivative work: Smartse (talk) Other versions