A novel, balloon-borne UV/visible spectrometer for direct sun measurements of stratospheric bromine
We report on a novel, medium-weight ( ∼ 25 kg ) optical spectrometer coupled to an automated sun tracker for direct sun observations from azimuth-controlled balloon platforms weighing approximately 12 kg . It is designed to measure a suite of UV–Vis absorbing gases relevant in the context of stratos...
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ftcopernicus:oai:publications.copernicus.org:egusphere116508 2024-09-15T18:16:51+00:00 A novel, balloon-borne UV/visible spectrometer for direct sun measurements of stratospheric bromine Voss, Karolin Holzbeck, Philip Pfeilsticker, Klaus Kleinschek, Ralph Wetzel, Gerald Fuentes Andrade, Blanca Höpfner, Michael Ungermann, Jörn Sinnhuber, Björn-Martin Butz, André 2024-07-29 application/pdf https://doi.org/10.5194/egusphere-2023-2912 https://egusphere.copernicus.org/preprints/2024/egusphere-2023-2912/ eng eng doi:10.5194/egusphere-2023-2912 https://egusphere.copernicus.org/preprints/2024/egusphere-2023-2912/ eISSN: Text 2024 ftcopernicus https://doi.org/10.5194/egusphere-2023-2912 2024-08-05T14:04:48Z We report on a novel, medium-weight ( ∼ 25 kg ) optical spectrometer coupled to an automated sun tracker for direct sun observations from azimuth-controlled balloon platforms weighing approximately 12 kg . It is designed to measure a suite of UV–Vis absorbing gases relevant in the context of stratospheric ozone depletion using the differential optical absorption spectroscopy (DOAS) method, i.e. O 3 , NO 2 , BrO , OClO , HONO , and IO . Here, we describe the design and major features of the instrument. Further, the instrument's performance during two stratospheric deployments from Esrange near Kiruna (Sweden) on 21 August 2021 and from Timmins (Ontario, Canada) on 23 August 2022 is discussed along with the first results concerning inferred mixing ratios of BrO above balloon float altitude. Using a photochemical correction for the partitioning of stratospheric bromine ( [ BrO ] / [ Br y ] <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="56pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="589a03b7739d0c073235e355d8cc6faf"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="amt-17-4507-2024-ie00001.svg" width="56pt" height="16pt" src="amt-17-4507-2024-ie00001.png"/> </svg:svg> ) obtained by chemical transport simulations, the inferred total stratospheric bromine load [Br y ] amounts to (17.5 ± 2.2) ppt , with a purely statistical error amounting to 1.5 ppt in (5.5 ± 1.0)-year old air. The latter is inferred from simultaneous measurements of N 2 O by the GLORIA (Gimballed Limb Observer for Radiance Imaging of the Atmosphere) mid-IR instrument, resulting in a stratospheric entry of the investigated air mass in early 2017 ± 1 year. Text Kiruna Copernicus Publications: E-Journals |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
We report on a novel, medium-weight ( ∼ 25 kg ) optical spectrometer coupled to an automated sun tracker for direct sun observations from azimuth-controlled balloon platforms weighing approximately 12 kg . It is designed to measure a suite of UV–Vis absorbing gases relevant in the context of stratospheric ozone depletion using the differential optical absorption spectroscopy (DOAS) method, i.e. O 3 , NO 2 , BrO , OClO , HONO , and IO . Here, we describe the design and major features of the instrument. Further, the instrument's performance during two stratospheric deployments from Esrange near Kiruna (Sweden) on 21 August 2021 and from Timmins (Ontario, Canada) on 23 August 2022 is discussed along with the first results concerning inferred mixing ratios of BrO above balloon float altitude. Using a photochemical correction for the partitioning of stratospheric bromine ( [ BrO ] / [ Br y ] <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="56pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="589a03b7739d0c073235e355d8cc6faf"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="amt-17-4507-2024-ie00001.svg" width="56pt" height="16pt" src="amt-17-4507-2024-ie00001.png"/> </svg:svg> ) obtained by chemical transport simulations, the inferred total stratospheric bromine load [Br y ] amounts to (17.5 ± 2.2) ppt , with a purely statistical error amounting to 1.5 ppt in (5.5 ± 1.0)-year old air. The latter is inferred from simultaneous measurements of N 2 O by the GLORIA (Gimballed Limb Observer for Radiance Imaging of the Atmosphere) mid-IR instrument, resulting in a stratospheric entry of the investigated air mass in early 2017 ± 1 year. |
format |
Text |
author |
Voss, Karolin Holzbeck, Philip Pfeilsticker, Klaus Kleinschek, Ralph Wetzel, Gerald Fuentes Andrade, Blanca Höpfner, Michael Ungermann, Jörn Sinnhuber, Björn-Martin Butz, André |
spellingShingle |
Voss, Karolin Holzbeck, Philip Pfeilsticker, Klaus Kleinschek, Ralph Wetzel, Gerald Fuentes Andrade, Blanca Höpfner, Michael Ungermann, Jörn Sinnhuber, Björn-Martin Butz, André A novel, balloon-borne UV/visible spectrometer for direct sun measurements of stratospheric bromine |
author_facet |
Voss, Karolin Holzbeck, Philip Pfeilsticker, Klaus Kleinschek, Ralph Wetzel, Gerald Fuentes Andrade, Blanca Höpfner, Michael Ungermann, Jörn Sinnhuber, Björn-Martin Butz, André |
author_sort |
Voss, Karolin |
title |
A novel, balloon-borne UV/visible spectrometer for direct sun measurements of stratospheric bromine |
title_short |
A novel, balloon-borne UV/visible spectrometer for direct sun measurements of stratospheric bromine |
title_full |
A novel, balloon-borne UV/visible spectrometer for direct sun measurements of stratospheric bromine |
title_fullStr |
A novel, balloon-borne UV/visible spectrometer for direct sun measurements of stratospheric bromine |
title_full_unstemmed |
A novel, balloon-borne UV/visible spectrometer for direct sun measurements of stratospheric bromine |
title_sort |
novel, balloon-borne uv/visible spectrometer for direct sun measurements of stratospheric bromine |
publishDate |
2024 |
url |
https://doi.org/10.5194/egusphere-2023-2912 https://egusphere.copernicus.org/preprints/2024/egusphere-2023-2912/ |
genre |
Kiruna |
genre_facet |
Kiruna |
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eISSN: |
op_relation |
doi:10.5194/egusphere-2023-2912 https://egusphere.copernicus.org/preprints/2024/egusphere-2023-2912/ |
op_doi |
https://doi.org/10.5194/egusphere-2023-2912 |
_version_ |
1810454846474551296 |