001     1033787
005     20241212210726.0
024 7 _ |a 10.25926/BUW/0-524
|2 doi
037 _ _ |a FZJ-2024-06628
041 _ _ |a English
100 1 _ |a Zheng, Siyuan
|0 P:(DE-Juel1)180371
|b 0
245 _ _ |a Investigation of Lower Boundary Conditions of Brominated Very Short-lived Species (VSLS)
|f - 2024-06-17
260 _ _ |c 2024
|b Bergische Universität Wuppertal
300 _ _ |a 168
336 7 _ |a Output Types/Dissertation
|2 DataCite
336 7 _ |a DISSERTATION
|2 ORCID
336 7 _ |a PHDTHESIS
|2 BibTeX
336 7 _ |a Thesis
|0 2
|2 EndNote
336 7 _ |a Dissertation / PhD Thesis
|b phd
|m phd
|0 PUB:(DE-HGF)11
|s 1734009647_5472
|2 PUB:(DE-HGF)
336 7 _ |a doctoralThesis
|2 DRIVER
502 _ _ |a Dissertation, Bergische Universität Wuppertal, 2024
|c Bergische Universität Wuppertal
|b Dissertation
|d 2024
520 _ _ |a Photochemical 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.
536 _ _ |a 2112 - Climate Feedbacks (POF4-211)
|0 G:(DE-HGF)POF4-2112
|c POF4-211
|f POF IV
|x 0
588 _ _ |a Dataset connected to DataCite
773 _ _ |a 10.25926/BUW/0-524
909 C O |o oai:juser.fz-juelich.de:1033787
|p VDB
913 1 _ |a DE-HGF
|b Forschungsbereich Erde und Umwelt
|l Erde im Wandel – Unsere Zukunft nachhaltig gestalten
|1 G:(DE-HGF)POF4-210
|0 G:(DE-HGF)POF4-211
|3 G:(DE-HGF)POF4
|2 G:(DE-HGF)POF4-200
|4 G:(DE-HGF)POF
|v Die Atmosphäre im globalen Wandel
|9 G:(DE-HGF)POF4-2112
|x 0
914 1 _ |y 2024
920 _ _ |l yes
920 1 _ |0 I:(DE-Juel1)ICE-4-20101013
|k ICE-4
|l Stratosphäre
|x 0
980 _ _ |a phd
980 _ _ |a VDB
980 _ _ |a I:(DE-Juel1)ICE-4-20101013
980 _ _ |a UNRESTRICTED


LibraryCollectionCLSMajorCLSMinorLanguageAuthor
Marc 21