000856152 001__ 856152 000856152 005__ 20240712100946.0 000856152 0247_ $$2doi$$a10.5194/acp-18-11409-2018 000856152 0247_ $$2ISSN$$a1680-7316 000856152 0247_ $$2ISSN$$a1680-7324 000856152 0247_ $$2ISSN$$a= 000856152 0247_ $$2ISSN$$aAtmospheric 000856152 0247_ $$2ISSN$$achemistry 000856152 0247_ $$2ISSN$$aand 000856152 0247_ $$2ISSN$$aphysics 000856152 0247_ $$2ISSN$$a(Online) 000856152 0247_ $$2Handle$$a2128/20053 000856152 0247_ $$2WOS$$aWOS:000441652600001 000856152 0247_ $$2altmetric$$aaltmetric:46529011 000856152 037__ $$aFZJ-2018-05788 000856152 082__ $$a550 000856152 1001_ $$0P:(DE-Juel1)166537$$aNovelli, Anna$$b0$$eCorresponding author 000856152 245__ $$aEvaluation of OH and HO2 concentrations and their budgets during photooxidation of 2-methyl-3-butene-2-ol (MBO) in the atmospheric simulation chamber SAPHIR 000856152 260__ $$aKatlenburg-Lindau$$bEGU$$c2018 000856152 3367_ $$2DRIVER$$aarticle 000856152 3367_ $$2DataCite$$aOutput Types/Journal article 000856152 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1542208839_14806 000856152 3367_ $$2BibTeX$$aARTICLE 000856152 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000856152 3367_ $$00$$2EndNote$$aJournal Article 000856152 520__ $$aSeveral previous field studies have reported unexpectedly large concentrations of hydroxyl and hydroperoxyl radicals (OH and HO2, respectively) in forested environments that could not be explained by the traditional oxidation mechanisms that largely underestimated the observations. These environments were characterized by large concentrations of biogenic volatile organic compounds (BVOC) and low nitrogen oxide concentration. In isoprene-dominated environments, models developed to simulate atmospheric photochemistry generally underestimated the observed OH radical concentrations. In contrast, HO2 radical concentration showed large discrepancies with model simulations mainly in non-isoprene-dominated forested environments. An abundant BVOC emitted by lodgepole and ponderosa pines is 2-methyl-3-butene-2-ol (MBO), observed in large concentrations for studies where the HO2 concentration was poorly described by model simulations. In this work, the photooxidation of MBO by OH was investigated for NO concentrations lower than 200pptv in the atmospheric simulation chamber SAPHIR at Forschungszentrum Jülich. Measurements of OH and HO2 radicals, OH reactivity (kOH), MBO, OH precursors, and organic products (acetone and formaldehyde) were used to test our current understanding of the OH-oxidation mechanisms for MBO by comparing measurements with model calculations. All the measured trace gases agreed well with the model results (within 15%) indicating a well understood mechanism for the MBO oxidation by OH. Therefore, the oxidation of MBO cannot contribute to reconciling the unexplained high OH and HO2 radical concentrations found in previous field studies. 000856152 536__ $$0G:(DE-HGF)POF3-243$$a243 - Tropospheric trace substances and their transformation processes (POF3-243)$$cPOF3-243$$fPOF III$$x0 000856152 588__ $$aDataset connected to CrossRef 000856152 7001_ $$0P:(DE-Juel1)3039$$aKaminski, Martin$$b1 000856152 7001_ $$0P:(DE-Juel1)166277$$aRolletter, Michael$$b2$$ufzj 000856152 7001_ $$0P:(DE-Juel1)136889$$aAcir, Ismail-Hakki$$b3 000856152 7001_ $$0P:(DE-Juel1)2693$$aBohn, Birger$$b4$$ufzj 000856152 7001_ $$0P:(DE-Juel1)16317$$aDorn, Hans-Peter$$b5$$ufzj 000856152 7001_ $$0P:(DE-Juel1)6775$$aLi, Xin$$b6$$ufzj 000856152 7001_ $$0P:(DE-Juel1)151242$$aLutz, Anna$$b7 000856152 7001_ $$0P:(DE-Juel1)7894$$aNehr, Sascha$$b8 000856152 7001_ $$0P:(DE-Juel1)16347$$aRohrer, Franz$$b9$$ufzj 000856152 7001_ $$0P:(DE-Juel1)5344$$aTillmann, Ralf$$b10$$ufzj 000856152 7001_ $$0P:(DE-Juel1)2367$$aWegener, Robert$$b11$$ufzj 000856152 7001_ $$0P:(DE-Juel1)16342$$aHolland, Frank$$b12$$ufzj 000856152 7001_ $$0P:(DE-Juel1)16326$$aHofzumahaus, Andreas$$b13 000856152 7001_ $$0P:(DE-Juel1)4528$$aKiendler-Scharr, Astrid$$b14 000856152 7001_ $$0P:(DE-Juel1)16324$$aWahner, Andreas$$b15 000856152 7001_ $$0P:(DE-Juel1)7363$$aFuchs, Hendrik$$b16$$eCorresponding author 000856152 773__ $$0PERI:(DE-600)2069847-1$$a10.5194/acp-18-11409-2018$$gVol. 18, no. 15, p. 11409 - 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