Short-Term Responses of Air Quality to Changes in Emissions under the Representative Concentration Pathway 4.5 Scenario over Brazil.

Some studies (e.g., References [ 16 , 17 ]) showed that O 3 background concentrations have a negative trend associated with the decrease of its lifetime in regions of low NO x (remote regions), leading to an increase in the O 3 levels in the eastern and northeast parts of the United States (U.S.).

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