Atmospheric Chemistry and Physics www.atmos-chem-phys.net 1680-7316 1680-7324 7 1 2007 10.5194/acp-7-139-2007 http://www.atmos-chem-phys.net/7/139/2007/ http://www.atmos-chem-phys.net/7/139/2007/acp-7-139-2007.html http://www.atmos-chem-phys.net/7/139/2007/acp-7-139-2007.pdf 139 149 2007-01-11 High resolution vertical distributions of NO₃ and N₂O₅ through the nocturnal boundary layer S. S. Brown steven.s.brown@noaa.gov W. P. Dubé H. D. Osthoff D. E. Wolfe W. M. Angevine A. R. Ravishankara NOAA Earth System Research Laboratory, 325 Broadway, Boulder, CO 80305, USA Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80305, USA Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309, USA The shallow mixing depth and vertical stratification of the lowest levels of the atmosphere at night has implications for the chemistry of nitrogen oxides emitted from the surface. 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