Ozone profiles above Kiruna from two ground-based radiometers
This paper presents new atmospheric ozone concentration profiles retrieved from measurements made with two ground-based millimetre-wave radiometers in Kiruna, Sweden. The instruments are the Kiruna Microwave Radiometer (KIMRA) and the Millimeter wave Radiometer 2 (MIRA 2). The ozone concentration pr...
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ftdoajarticles:oai:doaj.org/article:124cd383149d4edf9fe21f21315b7047 2023-05-15T17:04:05+02:00 Ozone profiles above Kiruna from two ground-based radiometers N. J. Ryan K. A. Walker U. Raffalski R. Kivi J. Gross G. L. Manney 2016-09-01T00:00:00Z https://doi.org/10.5194/amt-9-4503-2016 https://doaj.org/article/124cd383149d4edf9fe21f21315b7047 EN eng Copernicus Publications http://www.atmos-meas-tech.net/9/4503/2016/amt-9-4503-2016.pdf https://doaj.org/toc/1867-1381 https://doaj.org/toc/1867-8548 1867-1381 1867-8548 doi:10.5194/amt-9-4503-2016 https://doaj.org/article/124cd383149d4edf9fe21f21315b7047 Atmospheric Measurement Techniques, Vol 9, Iss 9, Pp 4503-4519 (2016) Environmental engineering TA170-171 Earthwork. Foundations TA715-787 article 2016 ftdoajarticles https://doi.org/10.5194/amt-9-4503-2016 2022-12-31T00:56:48Z This paper presents new atmospheric ozone concentration profiles retrieved from measurements made with two ground-based millimetre-wave radiometers in Kiruna, Sweden. The instruments are the Kiruna Microwave Radiometer (KIMRA) and the Millimeter wave Radiometer 2 (MIRA 2). The ozone concentration profiles are retrieved using an optimal estimation inversion technique, and they cover an altitude range of ∼ 16–54 km, with an altitude resolution of, at best, 8 km. The KIMRA and MIRA 2 measurements are compared to each other, to measurements from balloon-borne ozonesonde measurements at Sodankylä, Finland, and to measurements made by the Microwave Limb Sounder (MLS) aboard the Aura satellite. KIMRA has a correlation of 0.82, but shows a low bias, with respect to the ozonesonde data, and MIRA 2 shows a smaller magnitude low bias and a 0.98 correlation coefficient. Both radiometers are in general agreement with each other and with MLS data, showing high correlation coefficients, but there are differences between measurements that are not explained by random errors. An oscillatory bias with a peak of approximately ±1 ppmv is identified in the KIMRA ozone profiles over an altitude range of ∼ 18–35 km, and is believed to be due to baseline wave features that are present in the spectra. A time series analysis of KIMRA ozone for winters 2008–2013 shows the existence of a local wintertime minimum in the ozone profile above Kiruna. The measurements have been ongoing at Kiruna since 2002 and late 2012 for KIMRA and MIRA 2, respectively. Article in Journal/Newspaper Kiruna Sodankylä Directory of Open Access Journals: DOAJ Articles Kiruna Sodankylä ENVELOPE(26.600,26.600,67.417,67.417) Mira ENVELOPE(10.500,10.500,-70.417,-70.417) Atmospheric Measurement Techniques 9 9 4503 4519 |
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 N. J. Ryan K. A. Walker U. Raffalski R. Kivi J. Gross G. L. Manney Ozone profiles above Kiruna from two ground-based radiometers |
topic_facet |
Environmental engineering TA170-171 Earthwork. Foundations TA715-787 |
description |
This paper presents new atmospheric ozone concentration profiles retrieved from measurements made with two ground-based millimetre-wave radiometers in Kiruna, Sweden. The instruments are the Kiruna Microwave Radiometer (KIMRA) and the Millimeter wave Radiometer 2 (MIRA 2). The ozone concentration profiles are retrieved using an optimal estimation inversion technique, and they cover an altitude range of ∼ 16–54 km, with an altitude resolution of, at best, 8 km. The KIMRA and MIRA 2 measurements are compared to each other, to measurements from balloon-borne ozonesonde measurements at Sodankylä, Finland, and to measurements made by the Microwave Limb Sounder (MLS) aboard the Aura satellite. KIMRA has a correlation of 0.82, but shows a low bias, with respect to the ozonesonde data, and MIRA 2 shows a smaller magnitude low bias and a 0.98 correlation coefficient. Both radiometers are in general agreement with each other and with MLS data, showing high correlation coefficients, but there are differences between measurements that are not explained by random errors. An oscillatory bias with a peak of approximately ±1 ppmv is identified in the KIMRA ozone profiles over an altitude range of ∼ 18–35 km, and is believed to be due to baseline wave features that are present in the spectra. A time series analysis of KIMRA ozone for winters 2008–2013 shows the existence of a local wintertime minimum in the ozone profile above Kiruna. The measurements have been ongoing at Kiruna since 2002 and late 2012 for KIMRA and MIRA 2, respectively. |
format |
Article in Journal/Newspaper |
author |
N. J. Ryan K. A. Walker U. Raffalski R. Kivi J. Gross G. L. Manney |
author_facet |
N. J. Ryan K. A. Walker U. Raffalski R. Kivi J. Gross G. L. Manney |
author_sort |
N. J. Ryan |
title |
Ozone profiles above Kiruna from two ground-based radiometers |
title_short |
Ozone profiles above Kiruna from two ground-based radiometers |
title_full |
Ozone profiles above Kiruna from two ground-based radiometers |
title_fullStr |
Ozone profiles above Kiruna from two ground-based radiometers |
title_full_unstemmed |
Ozone profiles above Kiruna from two ground-based radiometers |
title_sort |
ozone profiles above kiruna from two ground-based radiometers |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/amt-9-4503-2016 https://doaj.org/article/124cd383149d4edf9fe21f21315b7047 |
long_lat |
ENVELOPE(26.600,26.600,67.417,67.417) ENVELOPE(10.500,10.500,-70.417,-70.417) |
geographic |
Kiruna Sodankylä Mira |
geographic_facet |
Kiruna Sodankylä Mira |
genre |
Kiruna Sodankylä |
genre_facet |
Kiruna Sodankylä |
op_source |
Atmospheric Measurement Techniques, Vol 9, Iss 9, Pp 4503-4519 (2016) |
op_relation |
http://www.atmos-meas-tech.net/9/4503/2016/amt-9-4503-2016.pdf https://doaj.org/toc/1867-1381 https://doaj.org/toc/1867-8548 1867-1381 1867-8548 doi:10.5194/amt-9-4503-2016 https://doaj.org/article/124cd383149d4edf9fe21f21315b7047 |
op_doi |
https://doi.org/10.5194/amt-9-4503-2016 |
container_title |
Atmospheric Measurement Techniques |
container_volume |
9 |
container_issue |
9 |
container_start_page |
4503 |
op_container_end_page |
4519 |
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1766058123255087104 |