Synthesizing evidence for the external cycling of NO<sub>x</sub> in high- to low-NO<sub>x</sub> atmospheres.

Nat Commun · 2023 · PMC10693570 · PMID 38042847

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an increasing trendno p-value reported

Consequently, an increasing trend in the HONO/NO 2 , HONO/NO y ratio and therefore a relatively strong external cycling contribution ( C external ) to the budget of HONO and NO x as NO x decreased were observed (see Calculation of C internal and C external in Method section).

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