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000049896 0247_ $$2DOI$$a10.1007/s10874-006-9049-3
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000049896 084__ $$2WoS$$aEnvironmental Sciences
000049896 084__ $$2WoS$$aMeteorology & Atmospheric Sciences
000049896 1001_ $$0P:(DE-Juel1)VDB26256$$aSchlosser, E.$$b0$$uFZJ
000049896 245__ $$aIntercomparison of Two Hydroxyl Radical Measurement Techniques at the Atmosphere Simulation Chamber SAPHIR
000049896 260__ $$aDordrecht [u.a.]$$bSpringer Science + Business Media B.V$$c2007
000049896 300__ $$a187 - 205
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000049896 440_0 $$03073$$aJournal of Atmospheric Chemistry$$v56$$x0167-7764$$y2
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000049896 520__ $$aAt the atmosphere simulation chamber SAPHIR in Julich both Laser-Induced Fluorescence Spectroscopy (LIF) and Long-Path Differential Optical Laser Absorption Spectroscopy (DOAS) are operational for the detection of OH radicals at tropospheric levels. The two different spectroscopic techniques were compared within the controlled environment of SAPHIR based on all simultaneous measurements acquired in 2003 ( 13 days). Hydroxyl radicals were scavenged by added CO during four of these days in order to experimentally check the calculated precisions at the detection limit. LIF measurements have a higher precision (sigma = 0.88 x 10(6) cm(-3)) and better time resolution (Delta t = 60 s), but the DOAS method (sigma = 1.24 x 10(6) cm(-3), Delta t = 135 s) is regarded as primary standard for comparisons because of its good accuracy. A high correlation coefficient of r = 0.95 was found for the whole data set highlighting the advantage of using a simulation chamber. The data set consists of two groups. The first one includes 3 days, where the LIF measurements yield ( 1 2) x 10(6) cm(-3) higher OH concentrations than observed by the DOAS instrument. The experimental conditions during these days are characterized by increased NOx concentration and a small dynamic range in OH. Excellent agreement is found within the other group of 6 days. The regression to the combined data of this large group yields unity slope without a significant offset.
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000049896 65320 $$2Author$$aatmosphere simulation chamber
000049896 65320 $$2Author$$ahydroxyl radical
000049896 65320 $$2Author$$ainstrument intercomparison
000049896 7001_ $$0P:(DE-Juel1)2693$$aBohn, B.$$b1$$uFZJ
000049896 7001_ $$0P:(DE-Juel1)16306$$aBrauers, T.$$b2$$uFZJ
000049896 7001_ $$0P:(DE-Juel1)16317$$aDorn, H. P.$$b3$$uFZJ
000049896 7001_ $$0P:(DE-Juel1)7363$$aFuchs, H.$$b4$$uFZJ
000049896 7001_ $$0P:(DE-Juel1)5628$$aHäseler, R.$$b5$$uFZJ
000049896 7001_ $$0P:(DE-Juel1)16326$$aHofzumahaus, A.$$b6$$uFZJ
000049896 7001_ $$0P:(DE-Juel1)16342$$aHolland, F.$$b7$$uFZJ
000049896 7001_ $$0P:(DE-Juel1)16347$$aRohrer, F.$$b8$$uFZJ
000049896 7001_ $$0P:(DE-Juel1)VDB14753$$aRupp, L.$$b9$$uFZJ
000049896 7001_ $$0P:(DE-Juel1)VDB1526$$aSiese, M.$$b10$$uFZJ
000049896 7001_ $$0P:(DE-Juel1)5344$$aTillmann, R.$$b11$$uFZJ
000049896 7001_ $$0P:(DE-Juel1)16324$$aWahner, A.$$b12$$uFZJ
000049896 773__ $$0PERI:(DE-600)1475524-5$$a10.1007/s10874-006-9049-3$$gVol. 56, p. 187 - 205$$p187 - 205$$q56<187 - 205$$tJournal of atmospheric chemistry$$v56$$x0167-7764$$y2007
000049896 8567_ $$uhttp://dx.doi.org/10.1007/s10874-006-9049-3
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