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Sensitivity of ozone production rate to ozone precursors
Author(s) -
Kleinman Lawrence I.,
Daum Peter H.,
Lee YinNan,
Nunnermacker Linda J.,
Springston Stephen R.,
WeinsteinLloyd Judith,
Rudolph Jochen
Publication year - 2001
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2000gl012597
Subject(s) - ozone , radical , troposphere , dilution , atmospheric chemistry , sink (geography) , chemistry , environmental science , atmospheric sciences , photochemistry , meteorology , thermodynamics , physics , organic chemistry , cartography , geography
The photochemical equations describing O 3 formation in the lower troposphere contain 2 major sink terms for free radicals; combination reactions and reactions with NO x . Knowing the fraction of radicals removed by reactions with NO x , termed L N /Q, allows one to predict the sensitivity of O 3 production to NO and VOCs. We derive an analytic formula that gives L N /Q in terms of readily measured O 3 precursors and test this formula using constrained steady state calculations based on field observations gathered in Phoenix, Arizona. The formula quantifies well‐known results regarding the effects of dilution, oxidation, and the production of oxidants on the transition from VOC to NO x sensitive behavior as an air parcel is advected away from an urban source.