The arctic seasonal cycle of total column CO 2 and CH 4 from ground-based solar and lunar FTIR absorption spectrometry
Solar absorption spectroscopy in the near infrared has been performed in Ny-Ålesund (78.9° N, 11.9° E) since 2002; however, due to the high latitude of the site, the sun is below the horizon from October to March (polar night) and no solar absorption measurements are possible. Here we present a nove...
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ftdoajarticles:oai:doaj.org/article:1f9a1ffa9d924fa3a14be93754114165 2023-05-15T15:07:22+02:00 The arctic seasonal cycle of total column CO 2 and CH 4 from ground-based solar and lunar FTIR absorption spectrometry M. Buschmann N. M. Deutscher M. Palm T. Warneke C. Weinzierl J. Notholt 2017-07-01T00:00:00Z https://doi.org/10.5194/amt-10-2397-2017 https://doaj.org/article/1f9a1ffa9d924fa3a14be93754114165 EN eng Copernicus Publications https://www.atmos-meas-tech.net/10/2397/2017/amt-10-2397-2017.pdf https://doaj.org/toc/1867-1381 https://doaj.org/toc/1867-8548 doi:10.5194/amt-10-2397-2017 1867-1381 1867-8548 https://doaj.org/article/1f9a1ffa9d924fa3a14be93754114165 Atmospheric Measurement Techniques, Vol 10, Pp 2397-2411 (2017) Environmental engineering TA170-171 Earthwork. Foundations TA715-787 article 2017 ftdoajarticles https://doi.org/10.5194/amt-10-2397-2017 2022-12-31T10:00:21Z Solar absorption spectroscopy in the near infrared has been performed in Ny-Ålesund (78.9° N, 11.9° E) since 2002; however, due to the high latitude of the site, the sun is below the horizon from October to March (polar night) and no solar absorption measurements are possible. Here we present a novel method of retrieving the total column dry-air mole fractions (DMFs) of CO 2 and CH 4 using moonlight in winter. Measurements have been taken during the polar nights from 2012 to 2016 and are validated with TCCON (Total Carbon Column Observing Network) measurements by solar and lunar absorption measurements on consecutive days and nights during spring and autumn. The complete seasonal cycle of the DMFs of CO 2 and CH 4 is presented and a precision of up to 0.5 % is achieved. A comparison of solar and lunar measurements on consecutive days during day and night in March 2013 yields non-significant biases of 0. 66 ± 4. 56 ppm for xCO 2 and −1. 94 ± 20. 63 ppb for xCH 4 . Additionally a model comparison has been performed with data from various reanalysis models. Article in Journal/Newspaper Arctic Ny Ålesund Ny-Ålesund polar night Directory of Open Access Journals: DOAJ Articles Arctic Ny-Ålesund Atmospheric Measurement Techniques 10 7 2397 2411 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Environmental engineering TA170-171 Earthwork. Foundations TA715-787 |
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Environmental engineering TA170-171 Earthwork. Foundations TA715-787 M. Buschmann N. M. Deutscher M. Palm T. Warneke C. Weinzierl J. Notholt The arctic seasonal cycle of total column CO 2 and CH 4 from ground-based solar and lunar FTIR absorption spectrometry |
topic_facet |
Environmental engineering TA170-171 Earthwork. Foundations TA715-787 |
description |
Solar absorption spectroscopy in the near infrared has been performed in Ny-Ålesund (78.9° N, 11.9° E) since 2002; however, due to the high latitude of the site, the sun is below the horizon from October to March (polar night) and no solar absorption measurements are possible. Here we present a novel method of retrieving the total column dry-air mole fractions (DMFs) of CO 2 and CH 4 using moonlight in winter. Measurements have been taken during the polar nights from 2012 to 2016 and are validated with TCCON (Total Carbon Column Observing Network) measurements by solar and lunar absorption measurements on consecutive days and nights during spring and autumn. The complete seasonal cycle of the DMFs of CO 2 and CH 4 is presented and a precision of up to 0.5 % is achieved. A comparison of solar and lunar measurements on consecutive days during day and night in March 2013 yields non-significant biases of 0. 66 ± 4. 56 ppm for xCO 2 and −1. 94 ± 20. 63 ppb for xCH 4 . Additionally a model comparison has been performed with data from various reanalysis models. |
format |
Article in Journal/Newspaper |
author |
M. Buschmann N. M. Deutscher M. Palm T. Warneke C. Weinzierl J. Notholt |
author_facet |
M. Buschmann N. M. Deutscher M. Palm T. Warneke C. Weinzierl J. Notholt |
author_sort |
M. Buschmann |
title |
The arctic seasonal cycle of total column CO 2 and CH 4 from ground-based solar and lunar FTIR absorption spectrometry |
title_short |
The arctic seasonal cycle of total column CO 2 and CH 4 from ground-based solar and lunar FTIR absorption spectrometry |
title_full |
The arctic seasonal cycle of total column CO 2 and CH 4 from ground-based solar and lunar FTIR absorption spectrometry |
title_fullStr |
The arctic seasonal cycle of total column CO 2 and CH 4 from ground-based solar and lunar FTIR absorption spectrometry |
title_full_unstemmed |
The arctic seasonal cycle of total column CO 2 and CH 4 from ground-based solar and lunar FTIR absorption spectrometry |
title_sort |
arctic seasonal cycle of total column co 2 and ch 4 from ground-based solar and lunar ftir absorption spectrometry |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/amt-10-2397-2017 https://doaj.org/article/1f9a1ffa9d924fa3a14be93754114165 |
geographic |
Arctic Ny-Ålesund |
geographic_facet |
Arctic Ny-Ålesund |
genre |
Arctic Ny Ålesund Ny-Ålesund polar night |
genre_facet |
Arctic Ny Ålesund Ny-Ålesund polar night |
op_source |
Atmospheric Measurement Techniques, Vol 10, Pp 2397-2411 (2017) |
op_relation |
https://www.atmos-meas-tech.net/10/2397/2017/amt-10-2397-2017.pdf https://doaj.org/toc/1867-1381 https://doaj.org/toc/1867-8548 doi:10.5194/amt-10-2397-2017 1867-1381 1867-8548 https://doaj.org/article/1f9a1ffa9d924fa3a14be93754114165 |
op_doi |
https://doi.org/10.5194/amt-10-2397-2017 |
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Atmospheric Measurement Techniques |
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10 |
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7 |
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2397 |
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2411 |
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1766338891510448128 |