Ozone and water vapor variability in the polar middle atmosphere observed with ground-based microwave radiometers
Leveraging continuous ozone and water vapor measurements with the two ground-based radiometers GROMOS-C and MIAWARA-C at Ny-Ålesund, Svalbard (79∘ N, 12∘ E) that started in September 2015 and combining MERRA-2 and Aura-MLS datasets, we analyze the interannual behavior and differences in ozone and wa...
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2023
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Online Access: | https://boris.unibe.ch/186157/1/acp-23-9137-2023.pdf https://boris.unibe.ch/186157/ |
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ftunivbern:oai:boris.unibe.ch:186157 2023-10-09T21:54:44+02:00 Ozone and water vapor variability in the polar middle atmosphere observed with ground-based microwave radiometers Shi, Guochun Krochin, Witali Sauvageat, Eric Stober, Gunter 2023 application/pdf https://boris.unibe.ch/186157/1/acp-23-9137-2023.pdf https://boris.unibe.ch/186157/ eng eng Copernicus Publications https://boris.unibe.ch/186157/ info:eu-repo/semantics/openAccess Shi, Guochun; Krochin, Witali; Sauvageat, Eric; Stober, Gunter (2023). Ozone and water vapor variability in the polar middle atmosphere observed with ground-based microwave radiometers. Atmospheric chemistry and physics, 23(16), pp. 9137-9159. Copernicus Publications 10.5194/acp-23-9137-2023 <http://dx.doi.org/10.5194/acp-23-9137-2023> 570 Life sciences biology 620 Engineering 530 Physics info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2023 ftunivbern https://doi.org/10.5194/acp-23-9137-2023 2023-09-10T23:49:44Z Leveraging continuous ozone and water vapor measurements with the two ground-based radiometers GROMOS-C and MIAWARA-C at Ny-Ålesund, Svalbard (79∘ N, 12∘ E) that started in September 2015 and combining MERRA-2 and Aura-MLS datasets, we analyze the interannual behavior and differences in ozone and water vapor and compile climatologies of both trace gases describing the annual variation of ozone and water vapor at polar latitudes. A climatological comparison of the measurements from our ground-based radiometers with reanalysis and satellite data was performed. Overall differences between GROMOS-C and Aura-MLS ozone volume mixing ratio (VMR) climatology are mainly within ±7 % throughout the middle and upper stratosphere and exceed 10 % in the lower mesosphere (1–0.1 hPa) in March and October. For the water vapor climatology, the average 5 % agreement is between MIAWARA-C and Aura-MLS water vapor VMR values throughout the stratosphere and mesosphere (100–0.01 hPa). The comparison to MERRA-2 yields an agreement that reveals discrepancies larger than 50 % above 0.2 hPa depending on the implemented radiative transfer schemes and other model physics. Furthermore, we perform a conjugate latitude comparison by defining a virtual station in the Southern Hemisphere at the geographic coordinate (79∘ S, 12∘ E) to investigate interhemispheric differences in the atmospheric compositions. Both trace gases show much more pronounced interannual and seasonal variability in the Northern Hemisphere than in the Southern Hemisphere. We estimate the effective water vapor transport vertical velocities corresponding to upwelling and downwelling periods driven by the residual circulation. In the Northern Hemisphere, the water vapor ascent rate (5 May to 20 June in 2015, 2016, 2017, 2018, and 2021 and 15 April to 31 May in 2019 and 2020) is 3.4 ± 1.9 mm s−1 from MIAWARA-C and 4.6 ± 1.8 mm s−1 from Aura-MLS, and the descent rate (15 September to 31 October in 2015–2021) is 5.0 ± 1.1 mm s−1 from MIAWARA-C and 5.4 ± 1.5 mm s−1 from Aura-MLS at ... Article in Journal/Newspaper Ny Ålesund Ny-Ålesund Svalbard BORIS (Bern Open Repository and Information System, University of Bern) Svalbard Ny-Ålesund Merra ENVELOPE(12.615,12.615,65.816,65.816) Atmospheric Chemistry and Physics 23 16 9137 9159 |
institution |
Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
topic |
570 Life sciences biology 620 Engineering 530 Physics |
spellingShingle |
570 Life sciences biology 620 Engineering 530 Physics Shi, Guochun Krochin, Witali Sauvageat, Eric Stober, Gunter Ozone and water vapor variability in the polar middle atmosphere observed with ground-based microwave radiometers |
topic_facet |
570 Life sciences biology 620 Engineering 530 Physics |
description |
Leveraging continuous ozone and water vapor measurements with the two ground-based radiometers GROMOS-C and MIAWARA-C at Ny-Ålesund, Svalbard (79∘ N, 12∘ E) that started in September 2015 and combining MERRA-2 and Aura-MLS datasets, we analyze the interannual behavior and differences in ozone and water vapor and compile climatologies of both trace gases describing the annual variation of ozone and water vapor at polar latitudes. A climatological comparison of the measurements from our ground-based radiometers with reanalysis and satellite data was performed. Overall differences between GROMOS-C and Aura-MLS ozone volume mixing ratio (VMR) climatology are mainly within ±7 % throughout the middle and upper stratosphere and exceed 10 % in the lower mesosphere (1–0.1 hPa) in March and October. For the water vapor climatology, the average 5 % agreement is between MIAWARA-C and Aura-MLS water vapor VMR values throughout the stratosphere and mesosphere (100–0.01 hPa). The comparison to MERRA-2 yields an agreement that reveals discrepancies larger than 50 % above 0.2 hPa depending on the implemented radiative transfer schemes and other model physics. Furthermore, we perform a conjugate latitude comparison by defining a virtual station in the Southern Hemisphere at the geographic coordinate (79∘ S, 12∘ E) to investigate interhemispheric differences in the atmospheric compositions. Both trace gases show much more pronounced interannual and seasonal variability in the Northern Hemisphere than in the Southern Hemisphere. We estimate the effective water vapor transport vertical velocities corresponding to upwelling and downwelling periods driven by the residual circulation. In the Northern Hemisphere, the water vapor ascent rate (5 May to 20 June in 2015, 2016, 2017, 2018, and 2021 and 15 April to 31 May in 2019 and 2020) is 3.4 ± 1.9 mm s−1 from MIAWARA-C and 4.6 ± 1.8 mm s−1 from Aura-MLS, and the descent rate (15 September to 31 October in 2015–2021) is 5.0 ± 1.1 mm s−1 from MIAWARA-C and 5.4 ± 1.5 mm s−1 from Aura-MLS at ... |
format |
Article in Journal/Newspaper |
author |
Shi, Guochun Krochin, Witali Sauvageat, Eric Stober, Gunter |
author_facet |
Shi, Guochun Krochin, Witali Sauvageat, Eric Stober, Gunter |
author_sort |
Shi, Guochun |
title |
Ozone and water vapor variability in the polar middle atmosphere observed with ground-based microwave radiometers |
title_short |
Ozone and water vapor variability in the polar middle atmosphere observed with ground-based microwave radiometers |
title_full |
Ozone and water vapor variability in the polar middle atmosphere observed with ground-based microwave radiometers |
title_fullStr |
Ozone and water vapor variability in the polar middle atmosphere observed with ground-based microwave radiometers |
title_full_unstemmed |
Ozone and water vapor variability in the polar middle atmosphere observed with ground-based microwave radiometers |
title_sort |
ozone and water vapor variability in the polar middle atmosphere observed with ground-based microwave radiometers |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://boris.unibe.ch/186157/1/acp-23-9137-2023.pdf https://boris.unibe.ch/186157/ |
long_lat |
ENVELOPE(12.615,12.615,65.816,65.816) |
geographic |
Svalbard Ny-Ålesund Merra |
geographic_facet |
Svalbard Ny-Ålesund Merra |
genre |
Ny Ålesund Ny-Ålesund Svalbard |
genre_facet |
Ny Ålesund Ny-Ålesund Svalbard |
op_source |
Shi, Guochun; Krochin, Witali; Sauvageat, Eric; Stober, Gunter (2023). Ozone and water vapor variability in the polar middle atmosphere observed with ground-based microwave radiometers. Atmospheric chemistry and physics, 23(16), pp. 9137-9159. Copernicus Publications 10.5194/acp-23-9137-2023 <http://dx.doi.org/10.5194/acp-23-9137-2023> |
op_relation |
https://boris.unibe.ch/186157/ |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-23-9137-2023 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
23 |
container_issue |
16 |
container_start_page |
9137 |
op_container_end_page |
9159 |
_version_ |
1779318429804658688 |