Retrieval of atmospheric CH 4 vertical information from ground-based FTS near-infrared spectra
The Total Carbon Column Observing Network (TCCON) column-averaged dry air mole fraction of CH 4 ( <math xmlns="http://www.w3.org/1998/Math/MathML" id="M4" display="inline" overflow="scroll" dspmath="mathml"><mrow><msub><mi>X&l...
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ftdoajarticles:oai:doaj.org/article:1579b7e5ae4a48f284a5a5c12b12ac6c 2023-05-15T17:48:29+02:00 Retrieval of atmospheric CH 4 vertical information from ground-based FTS near-infrared spectra M. Zhou B. Langerock M. K. Sha N. Kumps C. Hermans C. Petri T. Warneke H. Chen J.-M. Metzger R. Kivi P. Heikkinen M. Ramonet M. De Mazière 2019-11-01T00:00:00Z https://doi.org/10.5194/amt-12-6125-2019 https://doaj.org/article/1579b7e5ae4a48f284a5a5c12b12ac6c EN eng Copernicus Publications https://www.atmos-meas-tech.net/12/6125/2019/amt-12-6125-2019.pdf https://doaj.org/toc/1867-1381 https://doaj.org/toc/1867-8548 doi:10.5194/amt-12-6125-2019 1867-1381 1867-8548 https://doaj.org/article/1579b7e5ae4a48f284a5a5c12b12ac6c Atmospheric Measurement Techniques, Vol 12, Pp 6125-6141 (2019) Environmental engineering TA170-171 Earthwork. Foundations TA715-787 article 2019 ftdoajarticles https://doi.org/10.5194/amt-12-6125-2019 2022-12-31T01:50:54Z The Total Carbon Column Observing Network (TCCON) column-averaged dry air mole fraction of CH 4 ( <math xmlns="http://www.w3.org/1998/Math/MathML" id="M4" display="inline" overflow="scroll" dspmath="mathml"><mrow><msub><mi>X</mi><mrow class="chem"><msub><mi mathvariant="normal">CH</mi><mn mathvariant="normal">4</mn></msub></mrow></msub></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="24pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="970988a62a75b445a35b4961e8449a4f"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="amt-12-6125-2019-ie00001.svg" width="24pt" height="14pt" src="amt-12-6125-2019-ie00001.png"/></svg:svg> ) measurements have been widely used to validate satellite observations and to estimate model simulations. The GGG2014 code is the standard TCCON retrieval software used in performing a profile scaling retrieval. In order to obtain several vertical pieces of information in addition to the total column, in this study, the SFIT4 retrieval code is applied to retrieve the CH 4 mole fraction vertical profile from the Fourier transform spectrometer (FTS) spectrum at six sites (Ny-Ålesund, Sodankylä, Bialystok, Bremen, Orléans and St Denis) during the time period of 2016–2017. The retrieval strategy of the CH 4 profile retrieval from ground-based FTS near-infrared (NIR) spectra using the SFIT4 code (SFIT4NIR) is investigated. The degree of freedom for signal (DOFS) of the SFIT4NIR retrieval is about 2.4, with two distinct pieces of information in the troposphere and in the stratosphere. The averaging kernel and error budget of the SFIT4NIR retrieval are presented. The data accuracy and precision of the SFIT4NIR retrievals, including the total column and two partial columns (in the troposphere and stratosphere), are estimated by TCCON standard retrievals, ground-based in situ measurements, Atmospheric Chemistry Experiment – Fourier Transform ... Article in Journal/Newspaper Ny Ålesund Ny-Ålesund Sodankylä Directory of Open Access Journals: DOAJ Articles Ny-Ålesund Sodankylä ENVELOPE(26.600,26.600,67.417,67.417) Atmospheric Measurement Techniques 12 11 6125 6141 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
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. Zhou B. Langerock M. K. Sha N. Kumps C. Hermans C. Petri T. Warneke H. Chen J.-M. Metzger R. Kivi P. Heikkinen M. Ramonet M. De Mazière Retrieval of atmospheric CH 4 vertical information from ground-based FTS near-infrared spectra |
topic_facet |
Environmental engineering TA170-171 Earthwork. Foundations TA715-787 |
description |
The Total Carbon Column Observing Network (TCCON) column-averaged dry air mole fraction of CH 4 ( <math xmlns="http://www.w3.org/1998/Math/MathML" id="M4" display="inline" overflow="scroll" dspmath="mathml"><mrow><msub><mi>X</mi><mrow class="chem"><msub><mi mathvariant="normal">CH</mi><mn mathvariant="normal">4</mn></msub></mrow></msub></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="24pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="970988a62a75b445a35b4961e8449a4f"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="amt-12-6125-2019-ie00001.svg" width="24pt" height="14pt" src="amt-12-6125-2019-ie00001.png"/></svg:svg> ) measurements have been widely used to validate satellite observations and to estimate model simulations. The GGG2014 code is the standard TCCON retrieval software used in performing a profile scaling retrieval. In order to obtain several vertical pieces of information in addition to the total column, in this study, the SFIT4 retrieval code is applied to retrieve the CH 4 mole fraction vertical profile from the Fourier transform spectrometer (FTS) spectrum at six sites (Ny-Ålesund, Sodankylä, Bialystok, Bremen, Orléans and St Denis) during the time period of 2016–2017. The retrieval strategy of the CH 4 profile retrieval from ground-based FTS near-infrared (NIR) spectra using the SFIT4 code (SFIT4NIR) is investigated. The degree of freedom for signal (DOFS) of the SFIT4NIR retrieval is about 2.4, with two distinct pieces of information in the troposphere and in the stratosphere. The averaging kernel and error budget of the SFIT4NIR retrieval are presented. The data accuracy and precision of the SFIT4NIR retrievals, including the total column and two partial columns (in the troposphere and stratosphere), are estimated by TCCON standard retrievals, ground-based in situ measurements, Atmospheric Chemistry Experiment – Fourier Transform ... |
format |
Article in Journal/Newspaper |
author |
M. Zhou B. Langerock M. K. Sha N. Kumps C. Hermans C. Petri T. Warneke H. Chen J.-M. Metzger R. Kivi P. Heikkinen M. Ramonet M. De Mazière |
author_facet |
M. Zhou B. Langerock M. K. Sha N. Kumps C. Hermans C. Petri T. Warneke H. Chen J.-M. Metzger R. Kivi P. Heikkinen M. Ramonet M. De Mazière |
author_sort |
M. Zhou |
title |
Retrieval of atmospheric CH 4 vertical information from ground-based FTS near-infrared spectra |
title_short |
Retrieval of atmospheric CH 4 vertical information from ground-based FTS near-infrared spectra |
title_full |
Retrieval of atmospheric CH 4 vertical information from ground-based FTS near-infrared spectra |
title_fullStr |
Retrieval of atmospheric CH 4 vertical information from ground-based FTS near-infrared spectra |
title_full_unstemmed |
Retrieval of atmospheric CH 4 vertical information from ground-based FTS near-infrared spectra |
title_sort |
retrieval of atmospheric ch 4 vertical information from ground-based fts near-infrared spectra |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/amt-12-6125-2019 https://doaj.org/article/1579b7e5ae4a48f284a5a5c12b12ac6c |
long_lat |
ENVELOPE(26.600,26.600,67.417,67.417) |
geographic |
Ny-Ålesund Sodankylä |
geographic_facet |
Ny-Ålesund Sodankylä |
genre |
Ny Ålesund Ny-Ålesund Sodankylä |
genre_facet |
Ny Ålesund Ny-Ålesund Sodankylä |
op_source |
Atmospheric Measurement Techniques, Vol 12, Pp 6125-6141 (2019) |
op_relation |
https://www.atmos-meas-tech.net/12/6125/2019/amt-12-6125-2019.pdf https://doaj.org/toc/1867-1381 https://doaj.org/toc/1867-8548 doi:10.5194/amt-12-6125-2019 1867-1381 1867-8548 https://doaj.org/article/1579b7e5ae4a48f284a5a5c12b12ac6c |
op_doi |
https://doi.org/10.5194/amt-12-6125-2019 |
container_title |
Atmospheric Measurement Techniques |
container_volume |
12 |
container_issue |
11 |
container_start_page |
6125 |
op_container_end_page |
6141 |
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1766154556609134592 |