j-value 

in atmospheric chemistry
https://doi.org/10.1351/goldbook.J03359
An effective first order rate constant for a photochemical reaction (photodecomposition, etc.) of light-absorbing impurities in the atmosphere.
Source:
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2198 [Terms] [Paper]
Citation: 'j-value' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.J03359 RIS BibTex EndNote
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Last revised: February 24, 2014