Retrievals of XCO2, XCH4 and XCO from portable, near-infrared Fourier transform spectrometer solar observations in Antarctica
The COllaborative Carbon Column Observing Network (COCCON) uses low-resolution, portable EM27/SUN Fourier transform spectrometers (FTSs) to make retrievals of column-averaged dry-air mole fractions (DMFs, represented as Xgas) of CO2, CH4, CO and H2O from near-infrared solar absorption spectra. The C...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00063998 2023-05-15T13:49:22+02:00 Retrievals of XCO2, XCH4 and XCO from portable, near-infrared Fourier transform spectrometer solar observations in Antarctica Pollard, David F. Hase, Frank Sha, Mahesh Kumar Dubravica, Darko Alberti, Carlos Smale, Dan 2022-12 electronic https://doi.org/10.5194/essd-14-5427-2022 https://noa.gwlb.de/receive/cop_mods_00063998 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062902/essd-14-5427-2022.pdf https://essd.copernicus.org/articles/14/5427/2022/essd-14-5427-2022.pdf eng eng Copernicus Publications Earth System Science Data -- http://www.earth-syst-sci-data.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2475469 -- 1866-3516 https://doi.org/10.5194/essd-14-5427-2022 https://noa.gwlb.de/receive/cop_mods_00063998 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062902/essd-14-5427-2022.pdf https://essd.copernicus.org/articles/14/5427/2022/essd-14-5427-2022.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2022 ftnonlinearchiv https://doi.org/10.5194/essd-14-5427-2022 2022-12-19T00:12:44Z The COllaborative Carbon Column Observing Network (COCCON) uses low-resolution, portable EM27/SUN Fourier transform spectrometers (FTSs) to make retrievals of column-averaged dry-air mole fractions (DMFs, represented as Xgas) of CO2, CH4, CO and H2O from near-infrared solar absorption spectra. The COCCON has developed rapidly over recent years and complements the Total Carbon Column Observing Network (TCCON). In this work, we provide details of the first seasonal time series of near-infrared XCO2, XCH4 and XCO retrievals from measurements made in Antarctica during the deployment of an EM27/SUN to the Arrival Heights laboratory on Ross Island over the austral summer of 2019–2020 under the auspices of the COCCON. The DMFs of all three species were lower in Antarctica than at mid-latitude, and for XCO2 and XCO, the retrieved values were less variable. For XCH4 however, the variability was significantly greater and it was found that this was strongly correlated to the proximity of the polar vortex. In order to ensure the stability of the instrument and the traceability of the retrievals, side-by-side comparisons to the TCCON station at Lauder, New Zealand and retrievals of the instrument line shape (ILS) were made before and after the measurements in Antarctica. These indicate that, over the course of the deployment, the instrument stability was such that the change in retrieved XCO2 was well below 0.1 %. The value of these data for satellite validation is demonstrated by making comparisons with the TROPOspheric Monitoring Instrument (TROPOMI) on the Sentinel-5 precursor (S5P) satellite. The dataset is available from the COCCON central facility hosted by the ESA Atmospheric Validation Data Centre (EVDC) https://doi.org/10.48477/coccon.pf10.arrivalheights.R02 (Pollard, 2021). Article in Journal/Newspaper Antarc* Antarctica Ross Island Niedersächsisches Online-Archiv NOA Arrival Heights ENVELOPE(166.650,166.650,-77.817,-77.817) Austral New Zealand Pollard ENVELOPE(64.617,64.617,-70.467,-70.467) Ross Island The Sentinel ENVELOPE(73.317,73.317,-52.983,-52.983) Earth System Science Data 14 12 5427 5437 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Pollard, David F. Hase, Frank Sha, Mahesh Kumar Dubravica, Darko Alberti, Carlos Smale, Dan Retrievals of XCO2, XCH4 and XCO from portable, near-infrared Fourier transform spectrometer solar observations in Antarctica |
topic_facet |
article Verlagsveröffentlichung |
description |
The COllaborative Carbon Column Observing Network (COCCON) uses low-resolution, portable EM27/SUN Fourier transform spectrometers (FTSs) to make retrievals of column-averaged dry-air mole fractions (DMFs, represented as Xgas) of CO2, CH4, CO and H2O from near-infrared solar absorption spectra. The COCCON has developed rapidly over recent years and complements the Total Carbon Column Observing Network (TCCON). In this work, we provide details of the first seasonal time series of near-infrared XCO2, XCH4 and XCO retrievals from measurements made in Antarctica during the deployment of an EM27/SUN to the Arrival Heights laboratory on Ross Island over the austral summer of 2019–2020 under the auspices of the COCCON. The DMFs of all three species were lower in Antarctica than at mid-latitude, and for XCO2 and XCO, the retrieved values were less variable. For XCH4 however, the variability was significantly greater and it was found that this was strongly correlated to the proximity of the polar vortex. In order to ensure the stability of the instrument and the traceability of the retrievals, side-by-side comparisons to the TCCON station at Lauder, New Zealand and retrievals of the instrument line shape (ILS) were made before and after the measurements in Antarctica. These indicate that, over the course of the deployment, the instrument stability was such that the change in retrieved XCO2 was well below 0.1 %. The value of these data for satellite validation is demonstrated by making comparisons with the TROPOspheric Monitoring Instrument (TROPOMI) on the Sentinel-5 precursor (S5P) satellite. The dataset is available from the COCCON central facility hosted by the ESA Atmospheric Validation Data Centre (EVDC) https://doi.org/10.48477/coccon.pf10.arrivalheights.R02 (Pollard, 2021). |
format |
Article in Journal/Newspaper |
author |
Pollard, David F. Hase, Frank Sha, Mahesh Kumar Dubravica, Darko Alberti, Carlos Smale, Dan |
author_facet |
Pollard, David F. Hase, Frank Sha, Mahesh Kumar Dubravica, Darko Alberti, Carlos Smale, Dan |
author_sort |
Pollard, David F. |
title |
Retrievals of XCO2, XCH4 and XCO from portable, near-infrared Fourier transform spectrometer solar observations in Antarctica |
title_short |
Retrievals of XCO2, XCH4 and XCO from portable, near-infrared Fourier transform spectrometer solar observations in Antarctica |
title_full |
Retrievals of XCO2, XCH4 and XCO from portable, near-infrared Fourier transform spectrometer solar observations in Antarctica |
title_fullStr |
Retrievals of XCO2, XCH4 and XCO from portable, near-infrared Fourier transform spectrometer solar observations in Antarctica |
title_full_unstemmed |
Retrievals of XCO2, XCH4 and XCO from portable, near-infrared Fourier transform spectrometer solar observations in Antarctica |
title_sort |
retrievals of xco2, xch4 and xco from portable, near-infrared fourier transform spectrometer solar observations in antarctica |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/essd-14-5427-2022 https://noa.gwlb.de/receive/cop_mods_00063998 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062902/essd-14-5427-2022.pdf https://essd.copernicus.org/articles/14/5427/2022/essd-14-5427-2022.pdf |
long_lat |
ENVELOPE(166.650,166.650,-77.817,-77.817) ENVELOPE(64.617,64.617,-70.467,-70.467) ENVELOPE(73.317,73.317,-52.983,-52.983) |
geographic |
Arrival Heights Austral New Zealand Pollard Ross Island The Sentinel |
geographic_facet |
Arrival Heights Austral New Zealand Pollard Ross Island The Sentinel |
genre |
Antarc* Antarctica Ross Island |
genre_facet |
Antarc* Antarctica Ross Island |
op_relation |
Earth System Science Data -- http://www.earth-syst-sci-data.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2475469 -- 1866-3516 https://doi.org/10.5194/essd-14-5427-2022 https://noa.gwlb.de/receive/cop_mods_00063998 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00062902/essd-14-5427-2022.pdf https://essd.copernicus.org/articles/14/5427/2022/essd-14-5427-2022.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/essd-14-5427-2022 |
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Earth System Science Data |
container_volume |
14 |
container_issue |
12 |
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5427 |
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5437 |
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