eprintid: 20245
rev_number: 8
eprint_status: archive
userid: 2341
dir: disk0/00/02/02/45
datestamp: 2016-02-17 10:04:32
lastmod: 2016-04-27 13:12:33
status_changed: 2016-02-17 10:04:32
type: doctoralThesis
metadata_visibility: show
creators_name: Schmitt, Stefan
title: The Dynamics of Reactive Halogen Species at the Dead Sea Valley
subjects: 500
subjects: 530
subjects: 540
subjects: 550
divisions: 130500
adv_faculty: af-13
cterms_swd: Physik
cterms_swd: Umwelt
cterms_swd: Totes Meer
cterms_swd: Halogene
cterms_swd: Fernerkundung
cterms_swd: Spektroskopie
cterms_swd: DOAS
abstract: Reactive halogen species (RHS) have a significant impact on the chemical composition of the atmosphere. With its high halite abundance and unique topography the Dead Sea Valley (DSV) is predestined for the investigation of RHS. In the
frame work of this thesis, two extensive measurement campaigns were carried out at the DSV in May 2012 and November 2014. The comparison of MAX-DOAS and LP-DOAS data with meteorological measurements indicates strong impact
of transport process on the observed trace gas dynamics. The strong depletion of NO2 mixing ratios during daytime coincides with increased RHS abundance and suggests the formation of halogenated nitrate compounds. These are assumed to enhance the release of RHS from aerosol surfaces by heterogeneous processes. Elevated, confined layers of BrO of up to 50 pptv suggest the release of reactive
bromine compounds from aerosol surfaces. The correlation of IO with surface waves indicates abiotic iodine release as a result of increased gas exchange at the water surface. For the first time, gaseous molecular iodine (up to 70 pptv)
was detected at the DSV serving as a precursor for reactive iodine. Further, first direct evidence for reactive chlorine chemistry at the DSV was found by the
detection of OClO at mixing ratios of up to 6 pptv.
date: 2016
id_scheme: DOI
id_number: 10.11588/heidok.00020245
ppn_swb: 1656501619
own_urn: urn:nbn:de:bsz:16-heidok-202454
date_accepted: 2016-02-03
advisor: HASH(0x556120ab8770)
language: eng
bibsort: SCHMITTSTETHEDYNAMIC2016
full_text_status: public
place_of_pub: Heidelberg, Germany
citation:   Schmitt, Stefan  (2016) The Dynamics of Reactive Halogen Species at the Dead Sea Valley.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/20245/1/Diss_SSchmitt_20160104_toRefereesTitleCorr_compressed.pdf