000012494 001__ 12494 000012494 005__ 20240712100824.0 000012494 0247_ $$2DOI$$a10.5194/acpd-10-12827-2010 000012494 0247_ $$2WOS$$aWOS:000280847700032 000012494 0247_ $$2Handle$$a2128/10047 000012494 037__ $$aPreJuSER-12494 000012494 041__ $$aeng 000012494 082__ $$a550 000012494 084__ $$2WoS$$aMeteorology & Atmospheric Sciences 000012494 1001_ $$0P:(DE-HGF)0$$aKoepke, P.$$b0 000012494 245__ $$aNO2 photolysis frequencies in street canyons 000012494 260__ $$aKatlenburg-Lindau$$bEGU$$c2010 000012494 300__ $$a7457 - 7466 000012494 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article 000012494 3367_ $$2DataCite$$aOutput Types/Journal article 000012494 3367_ $$00$$2EndNote$$aJournal Article 000012494 3367_ $$2BibTeX$$aARTICLE 000012494 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000012494 3367_ $$2DRIVER$$aarticle 000012494 440_0 $$09601$$aAtmospheric Chemistry and Physics$$v10$$x1680-7316 000012494 500__ $$aFinancial support by the German Umweltbundesamt under UFOPLAN Grant 370942207 is gratefully acknowledged. 000012494 520__ $$aPhotolysis frequencies for NO2 are modeled for the conditions in urban streets, which are taken into account as canyons with variable height and width. The effect of a street canyon is presented with absolute values and as a ratio RJ of the photolysis frequency within the street compared to that with free horizon. This allows further use of the existing photolysis parameterizations. Values are presented for variable solar elevation and azimuth angles, varying atmospheric conditions and different street properties. The NO2 photolysis frequency in a street depends strongly on the relative width of the street and its orientation towards the sun. Averaged over atmospheric conditions and street orientation, the NO2 photolysis frequency is reduced in comparison with the values for free horizon: to less than 20% for narrow skyscraper streets, to about 40% for typical urban streets, and only to about 80% for garden streets. A parameterization with the global solar irradiance is given for the averaged RJ values. 000012494 536__ $$0G:(DE-Juel1)FUEK491$$2G:(DE-HGF)$$aAtmosphäre und Klima$$cP23$$x0 000012494 588__ $$aDataset connected to Web of Science 000012494 650_7 $$2WoSType$$aJ 000012494 7001_ $$0P:(DE-HGF)0$$aGarhammer, M.$$b1 000012494 7001_ $$0P:(DE-HGF)0$$aHess, M.$$b2 000012494 7001_ $$0P:(DE-Juel1)16301$$aRoeth, E.-P.$$b3$$uFZJ 000012494 773__ $$0PERI:(DE-600)2069847-1$$a10.5194/acpd-10-12827-2010$$gVol. 10, p. 7457 - 7466$$p7457 - 7466$$q10<7457 - 7466$$tAtmospheric chemistry and physics$$v10$$x1680-7316$$y2010 000012494 8567_ $$uhttp://dx.doi.org/10.5194/acpd-10-12827-2010 000012494 8564_ $$uhttps://juser.fz-juelich.de/record/12494/files/acp-10-7457-2010.pdf$$yOpenAccess 000012494 8564_ $$uhttps://juser.fz-juelich.de/record/12494/files/acp-10-7457-2010.gif?subformat=icon$$xicon$$yOpenAccess 000012494 8564_ $$uhttps://juser.fz-juelich.de/record/12494/files/acp-10-7457-2010.jpg?subformat=icon-180$$xicon-180$$yOpenAccess 000012494 8564_ $$uhttps://juser.fz-juelich.de/record/12494/files/acp-10-7457-2010.jpg?subformat=icon-700$$xicon-700$$yOpenAccess 000012494 8564_ $$uhttps://juser.fz-juelich.de/record/12494/files/acp-10-7457-2010.pdf?subformat=pdfa$$xpdfa$$yOpenAccess 000012494 909CO $$ooai:juser.fz-juelich.de:12494$$pdnbdelivery$$pVDB$$pdriver$$popen_access$$popenaire 000012494 9141_ $$y2010 000012494 915__ $$0LIC:(DE-HGF)CCBY3$$2HGFVOC$$aCreative Commons Attribution CC BY 3.0 000012494 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess 000012494 915__ $$0StatID:(DE-HGF)0010$$aJCR/ISI refereed 000012494 9131_ $$0G:(DE-Juel1)FUEK491$$aDE-HGF$$bErde und Umwelt$$kP23$$lAtmosphäre und Klima$$vAtmosphäre und Klima$$x0$$zvormals P22 000012494 9201_ $$0I:(DE-Juel1)IEK-7-20101013$$gIEK$$kIEK-7$$lStratosphäre$$x1 000012494 970__ $$aVDB:(DE-Juel1)124117 000012494 9801_ $$aUNRESTRICTED 000012494 9801_ $$aFullTexts 000012494 980__ $$aVDB 000012494 980__ $$aConvertedRecord 000012494 980__ $$ajournal 000012494 980__ $$aI:(DE-Juel1)IEK-7-20101013 000012494 980__ $$aUNRESTRICTED 000012494 981__ $$aI:(DE-Juel1)ICE-4-20101013