000807643 001__ 807643 000807643 005__ 20240712101008.0 000807643 0247_ $$2doi$$a10.5194/amt-9-3455-2016 000807643 0247_ $$2Handle$$a2128/12029 000807643 0247_ $$2WOS$$aWOS:000381094100029 000807643 0247_ $$2altmetric$$aaltmetric:10776084 000807643 037__ $$aFZJ-2016-02130 000807643 082__ $$a550 000807643 1001_ $$0P:(DE-Juel1)2693$$aBohn, Birger$$b0$$eCorresponding author$$ufzj 000807643 245__ $$aCharacterisation and improvement of j(O1D) filter radiometers 000807643 260__ $$aKatlenburg-Lindau$$bCopernicus$$c2016 000807643 3367_ $$2DRIVER$$aarticle 000807643 3367_ $$2DataCite$$aOutput Types/Journal article 000807643 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1470148321_3434 000807643 3367_ $$2BibTeX$$aARTICLE 000807643 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000807643 3367_ $$00$$2EndNote$$aJournal Article 000807643 520__ $$aAtmospheric O3 → O(1D) photolysis frequencies j(O1D) are crucial parameters for atmospheric photochemistry because of their importance for primary OH formation. Filter radiometers have been used for many years for in situ field measurements of j(O1D). Typically the relationship between the output of the instruments and j(O1D) is non-linear because of changes in the shape of the solar spectrum dependent on solar zenith angles and total ozone columns. These non-linearities can be compensated for by a correction method based on laboratory measurements of the spectral sensitivity of the filter radiometer and simulated solar actinic flux density spectra. Although this correction is routinely applied, the results of a previous field comparison study of several filter radiometers revealed that some corrections were inadequate. In this work the spectral characterisations of seven instruments were revised, and the correction procedures were updated and harmonised considering recent recommendations of absorption cross sections and quantum yields of the photolysis process O3 → O(1D). Previous inconsistencies were largely removed using these procedures. In addition, optical interference filters were replaced to improve the spectral properties of the instruments. Successive determinations of spectral sensitivities and field comparisons of the modified instruments with a spectroradiometer reference confirmed the improved performance. Overall, filter radiometers remain a low-maintenance alternative of spectroradiometers for accurate measurements of j(O1D) provided their spectral properties are known and potential drifts in sensitivities are monitored by regular calibrations with standard lamps or reference instruments. 000807643 536__ $$0G:(DE-HGF)POF3-243$$a243 - Tropospheric trace substances and their transformation processes (POF3-243)$$cPOF3-243$$fPOF III$$x0 000807643 588__ $$aDataset connected to CrossRef 000807643 7001_ $$0P:(DE-HGF)0$$aHeard, Dwayne E.$$b1 000807643 7001_ $$0P:(DE-HGF)0$$aMihalopoulos, Nikolaos$$b2 000807643 7001_ $$0P:(DE-HGF)0$$aPlass-Dülmer, Christian$$b3 000807643 7001_ $$0P:(DE-HGF)0$$aSchmitt, Rainer$$b4 000807643 7001_ $$0P:(DE-HGF)0$$aWhalley, Lisa K.$$b5 000807643 773__ $$0PERI:(DE-600)2505596-3$$a10.5194/amt-9-3455-2016$$gp. 1 - 25$$p3455-3466$$tAtmospheric measurement techniques$$v9$$x1867-1381$$y2016 000807643 8564_ $$uhttps://juser.fz-juelich.de/record/807643/files/amt-9-3455-2016.pdf$$yOpenAccess 000807643 8564_ $$uhttps://juser.fz-juelich.de/record/807643/files/amt-9-3455-2016.gif?subformat=icon$$xicon$$yOpenAccess 000807643 8564_ $$uhttps://juser.fz-juelich.de/record/807643/files/amt-9-3455-2016.jpg?subformat=icon-1440$$xicon-1440$$yOpenAccess 000807643 8564_ $$uhttps://juser.fz-juelich.de/record/807643/files/amt-9-3455-2016.jpg?subformat=icon-180$$xicon-180$$yOpenAccess 000807643 8564_ $$uhttps://juser.fz-juelich.de/record/807643/files/amt-9-3455-2016.jpg?subformat=icon-640$$xicon-640$$yOpenAccess 000807643 8564_ $$uhttps://juser.fz-juelich.de/record/807643/files/amt-9-3455-2016.pdf?subformat=pdfa$$xpdfa$$yOpenAccess 000807643 8767_ $$92016-10-19$$d2016-10-19$$eAPC$$jZahlung erfolgt$$pamt-2016-80 000807643 909CO $$ooai:juser.fz-juelich.de:807643$$pdnbdelivery$$popenCost$$pVDB$$pVDB:Earth_Environment$$pdriver$$pOpenAPC$$popen_access$$popenaire 000807643 915__ $$0LIC:(DE-HGF)CCBY3$$2HGFVOC$$aCreative Commons Attribution CC BY 3.0 000807643 915__ $$0StatID:(DE-HGF)0200$$2StatID$$aDBCoverage$$bSCOPUS 000807643 915__ $$0StatID:(DE-HGF)0100$$2StatID$$aJCR$$bATMOS MEAS TECH : 2014 000807643 915__ $$0StatID:(DE-HGF)0500$$2StatID$$aDBCoverage$$bDOAJ 000807643 915__ $$0StatID:(DE-HGF)0111$$2StatID$$aWoS$$bScience Citation Index Expanded 000807643 915__ $$0StatID:(DE-HGF)0150$$2StatID$$aDBCoverage$$bWeb of Science Core Collection 000807643 915__ $$0StatID:(DE-HGF)9900$$2StatID$$aIF < 5 000807643 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess 000807643 915__ $$0StatID:(DE-HGF)1150$$2StatID$$aDBCoverage$$bCurrent Contents - Physical, Chemical and Earth Sciences 000807643 915__ $$0StatID:(DE-HGF)0300$$2StatID$$aDBCoverage$$bMedline 000807643 915__ $$0StatID:(DE-HGF)0199$$2StatID$$aDBCoverage$$bThomson Reuters Master Journal List 000807643 9141_ $$y2016 000807643 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)2693$$aForschungszentrum Jülich GmbH$$b0$$kFZJ 000807643 9131_ $$0G:(DE-HGF)POF3-243$$1G:(DE-HGF)POF3-240$$2G:(DE-HGF)POF3-200$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bErde und Umwelt$$lAtmosphäre und Klima$$vTropospheric trace substances and their transformation processes$$x0 000807643 920__ $$lyes 000807643 9201_ $$0I:(DE-Juel1)IEK-8-20101013$$kIEK-8$$lTroposphäre$$x0 000807643 9801_ $$aFullTexts 000807643 980__ $$ajournal 000807643 980__ $$aVDB 000807643 980__ $$aUNRESTRICTED 000807643 980__ $$aI:(DE-Juel1)IEK-8-20101013 000807643 980__ $$aAPC 000807643 981__ $$aI:(DE-Juel1)ICE-3-20101013