Technical Note: Quantification of interferences of wet chemical HONO LOPAP measurements under simulated polar conditions
In the present pilot study, an optimized LOPAP instrument (LOng Path Absorption Photometer) for the detection of nitrous acid (HONO) in the atmosphere (DL 0.2 pptV) was tested at the high alpine research station Jungfraujoch at 3580 m altitude in the Swiss Alps under conditions comparable to polar r...
Main Authors: | , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2008
|
Subjects: | |
Online Access: | https://doaj.org/article/06c8ff50e54e499b840c6c2b28484aca |
id |
ftdoajarticles:oai:doaj.org/article:06c8ff50e54e499b840c6c2b28484aca |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:06c8ff50e54e499b840c6c2b28484aca 2023-05-15T18:22:26+02:00 Technical Note: Quantification of interferences of wet chemical HONO LOPAP measurements under simulated polar conditions J. Kleffmann P. Wiesen 2008-11-01T00:00:00Z https://doaj.org/article/06c8ff50e54e499b840c6c2b28484aca EN eng Copernicus Publications http://www.atmos-chem-phys.net/8/6813/2008/acp-8-6813-2008.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 https://doaj.org/article/06c8ff50e54e499b840c6c2b28484aca Atmospheric Chemistry and Physics, Vol 8, Iss 22, Pp 6813-6822 (2008) Physics QC1-999 Chemistry QD1-999 article 2008 ftdoajarticles 2022-12-31T13:59:54Z In the present pilot study, an optimized LOPAP instrument (LOng Path Absorption Photometer) for the detection of nitrous acid (HONO) in the atmosphere (DL 0.2 pptV) was tested at the high alpine research station Jungfraujoch at 3580 m altitude in the Swiss Alps under conditions comparable to polar regions. HONO concentrations in the range <0.5–50 pptV with an average of 7.5 pptV were observed at the Jungfraujoch. The diurnal profiles obtained exhibited clear maxima at noon and minima with very low concentration during the night supporting the proposed photochemical production of HONO. In good agreement with recent measurements at the South Pole, it was demonstrated, that interferences of chemical HONO instruments can significantly influence the measurements and lead to considerable overestimations, especially for low pollution level. Accordingly, the active correction of interferences is of paramount importance for the determination of reliable HONO data. Article in Journal/Newspaper South pole Directory of Open Access Journals: DOAJ Articles South Pole |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 J. Kleffmann P. Wiesen Technical Note: Quantification of interferences of wet chemical HONO LOPAP measurements under simulated polar conditions |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
In the present pilot study, an optimized LOPAP instrument (LOng Path Absorption Photometer) for the detection of nitrous acid (HONO) in the atmosphere (DL 0.2 pptV) was tested at the high alpine research station Jungfraujoch at 3580 m altitude in the Swiss Alps under conditions comparable to polar regions. HONO concentrations in the range <0.5–50 pptV with an average of 7.5 pptV were observed at the Jungfraujoch. The diurnal profiles obtained exhibited clear maxima at noon and minima with very low concentration during the night supporting the proposed photochemical production of HONO. In good agreement with recent measurements at the South Pole, it was demonstrated, that interferences of chemical HONO instruments can significantly influence the measurements and lead to considerable overestimations, especially for low pollution level. Accordingly, the active correction of interferences is of paramount importance for the determination of reliable HONO data. |
format |
Article in Journal/Newspaper |
author |
J. Kleffmann P. Wiesen |
author_facet |
J. Kleffmann P. Wiesen |
author_sort |
J. Kleffmann |
title |
Technical Note: Quantification of interferences of wet chemical HONO LOPAP measurements under simulated polar conditions |
title_short |
Technical Note: Quantification of interferences of wet chemical HONO LOPAP measurements under simulated polar conditions |
title_full |
Technical Note: Quantification of interferences of wet chemical HONO LOPAP measurements under simulated polar conditions |
title_fullStr |
Technical Note: Quantification of interferences of wet chemical HONO LOPAP measurements under simulated polar conditions |
title_full_unstemmed |
Technical Note: Quantification of interferences of wet chemical HONO LOPAP measurements under simulated polar conditions |
title_sort |
technical note: quantification of interferences of wet chemical hono lopap measurements under simulated polar conditions |
publisher |
Copernicus Publications |
publishDate |
2008 |
url |
https://doaj.org/article/06c8ff50e54e499b840c6c2b28484aca |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
Atmospheric Chemistry and Physics, Vol 8, Iss 22, Pp 6813-6822 (2008) |
op_relation |
http://www.atmos-chem-phys.net/8/6813/2008/acp-8-6813-2008.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 https://doaj.org/article/06c8ff50e54e499b840c6c2b28484aca |
_version_ |
1766201842409144320 |