Ground-based Ku-band microwave observations of ozone in the polar middle atmosphere
Ground-based observations of 11.072 GHz atmospheric ozone ( O 3 ) emission have been made using the Ny-Ålesund Ozone in the Mesosphere Instrument (NAOMI) at the UK Arctic Research Station (latitude 78 ∘ 55 ′ 0 ′′ N, longitude 11 ∘ 55 ′ 59 ′′ E), Spitsbergen. Seasonally averaged O 3 vertical profiles...
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ftdoajarticles:oai:doaj.org/article:025cab92bec8459ba73c7bc00696fac5 2023-05-15T15:03:40+02:00 Ground-based Ku-band microwave observations of ozone in the polar middle atmosphere D. A. Newnham M. A. Clilverd W. D. J. Clark M. Kosch P. T. Verronen A. E. E. Rogers 2022-04-01T00:00:00Z https://doi.org/10.5194/amt-15-2361-2022 https://doaj.org/article/025cab92bec8459ba73c7bc00696fac5 EN eng Copernicus Publications https://amt.copernicus.org/articles/15/2361/2022/amt-15-2361-2022.pdf https://doaj.org/toc/1867-1381 https://doaj.org/toc/1867-8548 doi:10.5194/amt-15-2361-2022 1867-1381 1867-8548 https://doaj.org/article/025cab92bec8459ba73c7bc00696fac5 Atmospheric Measurement Techniques, Vol 15, Pp 2361-2376 (2022) Environmental engineering TA170-171 Earthwork. Foundations TA715-787 article 2022 ftdoajarticles https://doi.org/10.5194/amt-15-2361-2022 2022-12-30T22:30:56Z Ground-based observations of 11.072 GHz atmospheric ozone ( O 3 ) emission have been made using the Ny-Ålesund Ozone in the Mesosphere Instrument (NAOMI) at the UK Arctic Research Station (latitude 78 ∘ 55 ′ 0 ′′ N, longitude 11 ∘ 55 ′ 59 ′′ E), Spitsbergen. Seasonally averaged O 3 vertical profiles in the Arctic polar mesosphere–lower thermosphere region for night-time and twilight conditions in the period 15 August 2017 to 15 March 2020 have been retrieved over the altitude range 62–98 km . NAOMI measurements are compared with corresponding, overlapping observations by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) satellite instrument. The NAOMI and SABER version 2.0 data are binned according to the SABER instrument 60 d yaw cycles into nominal 3-month “winter” (15 December–15 March), “autumn” (15 August–15 November), and “summer” (15 April–15 July) periods. The NAOMI observations show the same year-to-year and seasonal variabilities as the SABER 9.6 µm O 3 data. The winter night-time (solar zenith angle, SZA ≥ 110 ∘ ) and twilight (75 ∘ ≤ SZA ≤ 110 ∘ ) NAOMI and SABER 9.6 µm O 3 volume mixing ratio (VMR) profiles agree to within the measurement uncertainties. However, for autumn twilight conditions the SABER 9.6 µm O 3 secondary maximum VMR values are higher than NAOMI over altitudes 88–97 km by 47 % and 59 %, respectively in 2017 and 2018. Comparing the two SABER channels which measure O 3 at different wavelengths and use different processing schemes, the 9.6 µm O 3 autumn twilight VMR data for the three years 2017–2019 are higher than the corresponding 1.27 µm measurements with the largest difference (58 %) in the 65–95 km altitude range similar to the NAOMI observation. The SABER 9.6 µm O 3 summer daytime (SZA < 75 ∘ ) mesospheric O 3 VMR is also consistently higher than the 1.27 µm measurement, confirming previously reported differences between the SABER 9.6 µm channel and measurements of mesospheric O 3 by other satellite instruments. Article in Journal/Newspaper Arctic Ny Ålesund Ny-Ålesund Spitsbergen Directory of Open Access Journals: DOAJ Articles Arctic Ny-Ålesund Atmospheric Measurement Techniques 15 8 2361 2376 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental engineering TA170-171 Earthwork. Foundations TA715-787 |
spellingShingle |
Environmental engineering TA170-171 Earthwork. Foundations TA715-787 D. A. Newnham M. A. Clilverd W. D. J. Clark M. Kosch P. T. Verronen A. E. E. Rogers Ground-based Ku-band microwave observations of ozone in the polar middle atmosphere |
topic_facet |
Environmental engineering TA170-171 Earthwork. Foundations TA715-787 |
description |
Ground-based observations of 11.072 GHz atmospheric ozone ( O 3 ) emission have been made using the Ny-Ålesund Ozone in the Mesosphere Instrument (NAOMI) at the UK Arctic Research Station (latitude 78 ∘ 55 ′ 0 ′′ N, longitude 11 ∘ 55 ′ 59 ′′ E), Spitsbergen. Seasonally averaged O 3 vertical profiles in the Arctic polar mesosphere–lower thermosphere region for night-time and twilight conditions in the period 15 August 2017 to 15 March 2020 have been retrieved over the altitude range 62–98 km . NAOMI measurements are compared with corresponding, overlapping observations by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) satellite instrument. The NAOMI and SABER version 2.0 data are binned according to the SABER instrument 60 d yaw cycles into nominal 3-month “winter” (15 December–15 March), “autumn” (15 August–15 November), and “summer” (15 April–15 July) periods. The NAOMI observations show the same year-to-year and seasonal variabilities as the SABER 9.6 µm O 3 data. The winter night-time (solar zenith angle, SZA ≥ 110 ∘ ) and twilight (75 ∘ ≤ SZA ≤ 110 ∘ ) NAOMI and SABER 9.6 µm O 3 volume mixing ratio (VMR) profiles agree to within the measurement uncertainties. However, for autumn twilight conditions the SABER 9.6 µm O 3 secondary maximum VMR values are higher than NAOMI over altitudes 88–97 km by 47 % and 59 %, respectively in 2017 and 2018. Comparing the two SABER channels which measure O 3 at different wavelengths and use different processing schemes, the 9.6 µm O 3 autumn twilight VMR data for the three years 2017–2019 are higher than the corresponding 1.27 µm measurements with the largest difference (58 %) in the 65–95 km altitude range similar to the NAOMI observation. The SABER 9.6 µm O 3 summer daytime (SZA < 75 ∘ ) mesospheric O 3 VMR is also consistently higher than the 1.27 µm measurement, confirming previously reported differences between the SABER 9.6 µm channel and measurements of mesospheric O 3 by other satellite instruments. |
format |
Article in Journal/Newspaper |
author |
D. A. Newnham M. A. Clilverd W. D. J. Clark M. Kosch P. T. Verronen A. E. E. Rogers |
author_facet |
D. A. Newnham M. A. Clilverd W. D. J. Clark M. Kosch P. T. Verronen A. E. E. Rogers |
author_sort |
D. A. Newnham |
title |
Ground-based Ku-band microwave observations of ozone in the polar middle atmosphere |
title_short |
Ground-based Ku-band microwave observations of ozone in the polar middle atmosphere |
title_full |
Ground-based Ku-band microwave observations of ozone in the polar middle atmosphere |
title_fullStr |
Ground-based Ku-band microwave observations of ozone in the polar middle atmosphere |
title_full_unstemmed |
Ground-based Ku-band microwave observations of ozone in the polar middle atmosphere |
title_sort |
ground-based ku-band microwave observations of ozone in the polar middle atmosphere |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/amt-15-2361-2022 https://doaj.org/article/025cab92bec8459ba73c7bc00696fac5 |
geographic |
Arctic Ny-Ålesund |
geographic_facet |
Arctic Ny-Ålesund |
genre |
Arctic Ny Ålesund Ny-Ålesund Spitsbergen |
genre_facet |
Arctic Ny Ålesund Ny-Ålesund Spitsbergen |
op_source |
Atmospheric Measurement Techniques, Vol 15, Pp 2361-2376 (2022) |
op_relation |
https://amt.copernicus.org/articles/15/2361/2022/amt-15-2361-2022.pdf https://doaj.org/toc/1867-1381 https://doaj.org/toc/1867-8548 doi:10.5194/amt-15-2361-2022 1867-1381 1867-8548 https://doaj.org/article/025cab92bec8459ba73c7bc00696fac5 |
op_doi |
https://doi.org/10.5194/amt-15-2361-2022 |
container_title |
Atmospheric Measurement Techniques |
container_volume |
15 |
container_issue |
8 |
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2361 |
op_container_end_page |
2376 |
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1766335515972337664 |