caa a22 4500 475823672 CHVBK 20180406123825.0 cr unu---uuuuu 170329e20000201xx s 000 0 eng 10.1023/A:1006280926678 doi (NATIONALLICENCE)springer-10.1023/A:1006280926678 Heterogeneous Chemistry and the O3 Budget in the Lower Mid-Latitude Stratosphere [Elektronische Daten] [D. Chartrand, J. McConnell] A photochemical box model including a detailed heterogeneous chemistrymodule has been used to analyze in detail the effects of temperature andaerosol surface area on odd oxygen production/depletion in the lowerstratosphere at 30° S. Results show that for background aerosolloading, the hydrolysis of BrONO2 and N2O5are most important atall temperatures studied except when the temperature falls below about205 K, when ClONO2 hydrolysis becomes most important. Thisprocessing leads to removal of active nitrogen to form nitric acid andenhancement of HOx, BrOx, ClOx levels. Detailed O3 budgets asa function of temperature are presented showing how ozone loss andproduction terms vary with changes in stratospheric sulfate aerosol loadingfor the individual families. For (most) aerosol loading levels, thelargest ozone losses occurred at warmer temperatures due to the strongtemperature dependence of the NOx ozone-destroying reactions. Theexception to this occurred for the conditions representative of volcanicloading, which showed a strong increase in ozone destruction due toincreases in destruction from the ClOx and HOx families.The ozoneproduction term k[NO][HO2] did not show a strong dependence oneithertemperature or aerosol loading, due to the offsetting effect of reducedNOxand increased HOx concentrations. Kluwer Academic Publishers, 2000 O3 nationallicence budget nationallicence mid-latitude nationallicence lower stratosphere nationallicence temperature dependence nationallicence aerosol loading nationallicence chemistry nationallicence Chartrand D. Department of Earth and Atmospheric Science, York University, 4700 Keele Street, M3J-1P3, Toronto, Ontario, Canada aut McConnell J. Department of Earth and Atmospheric Science, York University, 4700 Keele Street, M3J-1P3, Toronto, Ontario, Canada aut Journal of Atmospheric Chemistry Kluwer Academic Publishers 35/2(2000-02-01), 109-149 0167-7764 35:2<109 2000 35 10874 https://doi.org/10.1023/A:1006280926678 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1006280926678 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chartrand D. Department of Earth and Atmospheric Science, York University, 4700 Keele Street, M3J-1P3, Toronto, Ontario, Canada aut NATIONALLICENCE 700 1- McConnell J. Department of Earth and Atmospheric Science, York University, 4700 Keele Street, M3J-1P3, Toronto, Ontario, Canada aut NATIONALLICENCE 773 0- Journal of Atmospheric Chemistry Kluwer Academic Publishers 35/2(2000-02-01), 109-149 0167-7764 35:2<109 2000 35 10874 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer