001033787 001__ 1033787
001033787 005__ 20241212210726.0
001033787 0247_ $$2doi$$a10.25926/BUW/0-524
001033787 037__ $$aFZJ-2024-06628
001033787 041__ $$aEnglish
001033787 1001_ $$0P:(DE-Juel1)180371$$aZheng, Siyuan$$b0
001033787 245__ $$aInvestigation of Lower Boundary Conditions of Brominated Very Short-lived Species (VSLS)$$f - 2024-06-17
001033787 260__ $$bBergische Universität Wuppertal$$c2024
001033787 300__ $$a168
001033787 3367_ $$2DataCite$$aOutput Types/Dissertation
001033787 3367_ $$2ORCID$$aDISSERTATION
001033787 3367_ $$2BibTeX$$aPHDTHESIS
001033787 3367_ $$02$$2EndNote$$aThesis
001033787 3367_ $$0PUB:(DE-HGF)11$$2PUB:(DE-HGF)$$aDissertation / PhD Thesis$$bphd$$mphd$$s1734009647_5472
001033787 3367_ $$2DRIVER$$adoctoralThesis
001033787 502__ $$aDissertation, Bergische Universität Wuppertal, 2024$$bDissertation$$cBergische Universität Wuppertal$$d2024
001033787 520__ $$aPhotochemical reactions with the reactive halogen atoms Cl and Br mostly cause stratospheric ozone depletion. The chlorine- and bromine-containing very short-lived species (VSLS), which have an atmospheric lifetime of less than six months, play an essential role in stratospheric total bromine loading. However, there is considerable uncertainty about the geographical distribution of their sources, and therefore, it is challenging to reproduce the observations. In order to describe the stratospheric or regional abundance of bromine from VSLS, it is of great importance to quantify the lower boundary conditions of these species. In order to increase our understanding of the role of brominated species in the stratosphere, the Chemical Lagrangian Model of the Stratosphere (CLaMS) has been used to investigate the global surface mixing ratio and lower boundary conditions for the simulation in this thesis. The simulation uses a ‘top-down approach, where atmospheric measurements from aircraft are used in combination with models to quantify and refine the lower boundary emissions. The findings of this thesis reveal that the simulation incorporating a monthly global lower boundary, featuring notable seasonal and zonal variations, exhibits enhanced concordance with observations obtained during the SouthTRAC campaign. However, the elevated mixing ratio of CHBr3 and CH2Br2 in the upper atmosphere was not confirmed by climatological upper tropospheric and stratospheric data, presumably due to slow up- ward transport. Moreover, the exceedingly high values detected in specific regions at the estimated lower boundary are likely attributed to the limited available observations from the SouthTRAC campaign. This underscores the necessity for additional observations during spring and summer, as well as observation data from higher latitudes in the Northern Hemisphere, to comprehensively construct the lower boundary distribution of CHBr3 and CH2Br2.
001033787 536__ $$0G:(DE-HGF)POF4-2112$$a2112 - Climate Feedbacks (POF4-211)$$cPOF4-211$$fPOF IV$$x0
001033787 588__ $$aDataset connected to DataCite
001033787 773__ $$a10.25926/BUW/0-524
001033787 909CO $$ooai:juser.fz-juelich.de:1033787$$pVDB
001033787 9131_ $$0G:(DE-HGF)POF4-211$$1G:(DE-HGF)POF4-210$$2G:(DE-HGF)POF4-200$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF4-2112$$aDE-HGF$$bForschungsbereich Erde und Umwelt$$lErde im Wandel – Unsere Zukunft nachhaltig gestalten$$vDie Atmosphäre im globalen Wandel$$x0
001033787 9141_ $$y2024
001033787 920__ $$lyes
001033787 9201_ $$0I:(DE-Juel1)ICE-4-20101013$$kICE-4$$lStratosphäre$$x0
001033787 980__ $$aphd
001033787 980__ $$aVDB
001033787 980__ $$aI:(DE-Juel1)ICE-4-20101013
001033787 980__ $$aUNRESTRICTED