title: Reactive halogen species above salt lakes and  salt pans
creator: Holla, Robert
subject: 500
subject: 500 Natural sciences and mathematics
subject: 530
subject: 530 Physics
subject: 550
subject: 550 Earth sciences
description: Salt lakes can be found on all continents and saline soils cover 2.5% of the land surface  of the earth (FAO, 2012). This thesis investigates the presence of reactive halogen  species (RHS) above salt lakes and saline soils to evaluate their relevance for tropospheric  chemistry of the planetary boundary layer. Ground-based MAX-DOAS and LP-DOAS  measurements were conducted at salt lakes and two other sites with high halogen content.  Prior to this work, RHS were found at three salt lakes with mixing ratios ranging from  several pptv up to more than 100 pptv. On the basis of this work the data base on reactive  halogen release from salt lakes was significantly expanded. Passive DOAS and active  DOAS systems were used to examine the vertical as well as the horizontal distribution of  BrO in the Dead Sea Valley. Vertical profiles of aerosols, BrO and NO2 were measured at  two adjacent sites at the Dead Sea using MAX-DOAS. The first time vertical profiles of  BrO and NO2 at the Dead Sea were determined and interpreted in terms of the special  atmospheric dynamics in the Dead Sea Valley. The resulting ground values of BrO and  NO2 at one measurement site were validated by LP-DOAS and show very good agreement.  The field studies presented in this work showed, that the release of RHS in those regions  is less widespread than previously assumed.
date: 2013
type: Dissertation
type: info:eu-repo/semantics/doctoralThesis
type: NonPeerReviewed
format: application/pdf
identifier: https://archiv.ub.uni-heidelberg.de/volltextserverhttps://archiv.ub.uni-heidelberg.de/volltextserver/14636/1/Dissertation_Holla_Robert.pdf
identifier: DOI:10.11588/heidok.00014636
identifier: urn:nbn:de:bsz:16-heidok-146365
identifier:   Holla, Robert  (2013) Reactive halogen species above salt lakes and salt pans.  [Dissertation]     
relation: https://archiv.ub.uni-heidelberg.de/volltextserver/14636/
rights: info:eu-repo/semantics/openAccess
rights: http://archiv.ub.uni-heidelberg.de/volltextserver/help/license_urhg.html
language: eng