Retrieval of tropospheric column-averaged CH4 mole fraction by solar absorption FTIR-spectrometry using N2O as a proxy
Tropospheric column-averaged CH4 mole fractions were derived from ground-based column absorption measurements. The method uses stratospheric N2O columns to correct for the stratospheric contribution to the CH4 total column. The method was applied to four Total Carbon Column Observing Network (TCCON)...
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ftunivwollongong:oai:ro.uow.edu.au:smhpapers-3630 2023-05-15T15:03:13+02:00 Retrieval of tropospheric column-averaged CH4 mole fraction by solar absorption FTIR-spectrometry using N2O as a proxy Wang, Zhiting Deutscher, Nicholas Warneke, Thorsten Notholt, Justus Dils, B Griffith, David W. T Schmidt, M Ramonet, M Gerbig, Christoph 2014-01-01T08:00:00Z application/pdf https://ro.uow.edu.au/smhpapers/2611 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=3630&context=smhpapers unknown Research Online https://ro.uow.edu.au/smhpapers/2611 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=3630&context=smhpapers Faculty of Science, Medicine and Health - Papers: part A Medicine and Health Sciences Social and Behavioral Sciences article 2014 ftunivwollongong 2020-02-25T11:08:15Z Tropospheric column-averaged CH4 mole fractions were derived from ground-based column absorption measurements. The method uses stratospheric N2O columns to correct for the stratospheric contribution to the CH4 total column. The method was applied to four Total Carbon Column Observing Network (TCCON) sites covering locations from the Northern Arctic to the tropics. It performs well for all sites. The derived tropospheric CH4 concentrations were compared with profiles measured by aircraft at three sites. The results indicate an inter-site consistency within 6 ppb (~0.3%). With aircraft profiles up to 3 km, the seasonal behavior of the derived tropospheric CH4 concentration was also checked, revealing a difference of around 20 ppb. The mean relative uncertainty of the four sites, as estimated from the daily standard deviations, is 0.23%. Article in Journal/Newspaper Arctic University of Wollongong, Australia: Research Online Arctic |
institution |
Open Polar |
collection |
University of Wollongong, Australia: Research Online |
op_collection_id |
ftunivwollongong |
language |
unknown |
topic |
Medicine and Health Sciences Social and Behavioral Sciences |
spellingShingle |
Medicine and Health Sciences Social and Behavioral Sciences Wang, Zhiting Deutscher, Nicholas Warneke, Thorsten Notholt, Justus Dils, B Griffith, David W. T Schmidt, M Ramonet, M Gerbig, Christoph Retrieval of tropospheric column-averaged CH4 mole fraction by solar absorption FTIR-spectrometry using N2O as a proxy |
topic_facet |
Medicine and Health Sciences Social and Behavioral Sciences |
description |
Tropospheric column-averaged CH4 mole fractions were derived from ground-based column absorption measurements. The method uses stratospheric N2O columns to correct for the stratospheric contribution to the CH4 total column. The method was applied to four Total Carbon Column Observing Network (TCCON) sites covering locations from the Northern Arctic to the tropics. It performs well for all sites. The derived tropospheric CH4 concentrations were compared with profiles measured by aircraft at three sites. The results indicate an inter-site consistency within 6 ppb (~0.3%). With aircraft profiles up to 3 km, the seasonal behavior of the derived tropospheric CH4 concentration was also checked, revealing a difference of around 20 ppb. The mean relative uncertainty of the four sites, as estimated from the daily standard deviations, is 0.23%. |
format |
Article in Journal/Newspaper |
author |
Wang, Zhiting Deutscher, Nicholas Warneke, Thorsten Notholt, Justus Dils, B Griffith, David W. T Schmidt, M Ramonet, M Gerbig, Christoph |
author_facet |
Wang, Zhiting Deutscher, Nicholas Warneke, Thorsten Notholt, Justus Dils, B Griffith, David W. T Schmidt, M Ramonet, M Gerbig, Christoph |
author_sort |
Wang, Zhiting |
title |
Retrieval of tropospheric column-averaged CH4 mole fraction by solar absorption FTIR-spectrometry using N2O as a proxy |
title_short |
Retrieval of tropospheric column-averaged CH4 mole fraction by solar absorption FTIR-spectrometry using N2O as a proxy |
title_full |
Retrieval of tropospheric column-averaged CH4 mole fraction by solar absorption FTIR-spectrometry using N2O as a proxy |
title_fullStr |
Retrieval of tropospheric column-averaged CH4 mole fraction by solar absorption FTIR-spectrometry using N2O as a proxy |
title_full_unstemmed |
Retrieval of tropospheric column-averaged CH4 mole fraction by solar absorption FTIR-spectrometry using N2O as a proxy |
title_sort |
retrieval of tropospheric column-averaged ch4 mole fraction by solar absorption ftir-spectrometry using n2o as a proxy |
publisher |
Research Online |
publishDate |
2014 |
url |
https://ro.uow.edu.au/smhpapers/2611 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=3630&context=smhpapers |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Faculty of Science, Medicine and Health - Papers: part A |
op_relation |
https://ro.uow.edu.au/smhpapers/2611 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=3630&context=smhpapers |
_version_ |
1766335105400307712 |