Fourier transform infrared time series of tropospheric HCN in eastern China: seasonality, interannual variability, and source attribution
We analyzed seasonality and interannual variability of tropospheric hydrogen cyanide (HCN) columns in densely populated eastern China for the first time. The results were derived from solar absorption spectra recorded with a ground-based high-spectral-resolution Fourier transform infrared (FTIR) spe...
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article Verlagsveröffentlichung Sun, Youwen Liu, Cheng Zhang, Lin Palm, Mathias Notholt, Justus Yin, Hao Vigouroux, Corinne Lutsch, Erik Wang, Wei Shan, Changong Blumenstock, Thomas Nagahama, Tomoo Morino, Isamu Mahieu, Emmanuel Strong, Kimberly Langerock, Bavo De Mazière, Martine Hu, Qihou Zhang, Huifang Petri, Christof Liu, Jianguo Fourier transform infrared time series of tropospheric HCN in eastern China: seasonality, interannual variability, and source attribution |
topic_facet |
article Verlagsveröffentlichung |
description |
We analyzed seasonality and interannual variability of tropospheric hydrogen cyanide (HCN) columns in densely populated eastern China for the first time. The results were derived from solar absorption spectra recorded with a ground-based high-spectral-resolution Fourier transform infrared (FTIR) spectrometer in Hefei (31∘54′ N, 117∘10′ E) between 2015 and 2018. The tropospheric HCN columns over Hefei, China, showed significant seasonal variations with three monthly mean peaks throughout the year. The magnitude of the tropospheric HCN column peaked in May, September, and December. The tropospheric HCN column reached a maximum monthly mean of (9.8±0.78)×1015 molecules cm−2 in May and a minimum monthly mean of (7.16±0.75)×1015 molecules cm−2 in November. In most cases, the tropospheric HCN columns in Hefei (32∘ N) are higher than the FTIR observations in Ny-Ålesund (79∘ N), Kiruna (68∘ N), Bremen (53∘ N), Jungfraujoch (47∘ N), Toronto (44∘ N), Rikubetsu (43∘ N), Izana (28∘ N), Mauna Loa (20∘ N), La Reunion Maido (21∘ S), Lauder (45∘ S), and Arrival Heights (78∘ S) that are affiliated with the Network for Detection of Atmospheric Composition Change (NDACC). Enhancements of tropospheric HCN column were observed between September 2015 and July 2016 compared to the same period of measurements in other years. The magnitude of the enhancement ranges from 5 % to 46 % with an average of 22 %. Enhancement of tropospheric HCN (ΔHCN) is correlated with the concurrent enhancement of tropospheric CO (ΔCO), indicating that enhancements of tropospheric CO and HCN were due to the same sources. The GEOS-Chem tagged CO simulation, the global fire maps, and the potential source contribution function (PSCF) values calculated using back trajectories revealed that the seasonal maxima in May are largely due to the influence of biomass burning in Southeast Asia (SEAS) (41±13.1 %), Europe and boreal Asia (EUBA) (21±9.3 %), and Africa (AF) (22±4.7 %). The seasonal maxima in September are largely due to the influence of biomass burnings in EUBA (38±11.3 %), AF (26±6.7 %), SEAS (14±3.3 %), and North America (NA) (13.8±8.4 %). For the seasonal maxima in December, dominant contributions are from AF (36±7.1 %), EUBA (21±5.2 %), and NA (18.7±5.2 %). The tropospheric HCN enhancement between September 2015 and July 2016 at Hefei (32∘ N) was attributed to an elevated influence of biomass burnings in SEAS, EUBA, and Oceania (OCE) in this period. In particular, an elevated number of fires in OCE in the second half of 2015 dominated the tropospheric HCN enhancement between September and December 2015. An elevated number of fires in SEAS in the first half of 2016 dominated the tropospheric HCN enhancement between January and July 2016. |
format |
Article in Journal/Newspaper |
author |
Sun, Youwen Liu, Cheng Zhang, Lin Palm, Mathias Notholt, Justus Yin, Hao Vigouroux, Corinne Lutsch, Erik Wang, Wei Shan, Changong Blumenstock, Thomas Nagahama, Tomoo Morino, Isamu Mahieu, Emmanuel Strong, Kimberly Langerock, Bavo De Mazière, Martine Hu, Qihou Zhang, Huifang Petri, Christof Liu, Jianguo |
author_facet |
Sun, Youwen Liu, Cheng Zhang, Lin Palm, Mathias Notholt, Justus Yin, Hao Vigouroux, Corinne Lutsch, Erik Wang, Wei Shan, Changong Blumenstock, Thomas Nagahama, Tomoo Morino, Isamu Mahieu, Emmanuel Strong, Kimberly Langerock, Bavo De Mazière, Martine Hu, Qihou Zhang, Huifang Petri, Christof Liu, Jianguo |
author_sort |
Sun, Youwen |
title |
Fourier transform infrared time series of tropospheric HCN in eastern China: seasonality, interannual variability, and source attribution |
title_short |
Fourier transform infrared time series of tropospheric HCN in eastern China: seasonality, interannual variability, and source attribution |
title_full |
Fourier transform infrared time series of tropospheric HCN in eastern China: seasonality, interannual variability, and source attribution |
title_fullStr |
Fourier transform infrared time series of tropospheric HCN in eastern China: seasonality, interannual variability, and source attribution |
title_full_unstemmed |
Fourier transform infrared time series of tropospheric HCN in eastern China: seasonality, interannual variability, and source attribution |
title_sort |
fourier transform infrared time series of tropospheric hcn in eastern china: seasonality, interannual variability, and source attribution |
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Copernicus Publications |
publishDate |
2020 |
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https://doi.org/10.5194/acp-20-5437-2020 https://noa.gwlb.de/receive/cop_mods_00051465 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00051121/acp-20-5437-2020.pdf https://acp.copernicus.org/articles/20/5437/2020/acp-20-5437-2020.pdf |
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ENVELOPE(166.650,166.650,-77.817,-77.817) |
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Ny-Ålesund Kiruna Arrival Heights |
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Kiruna Ny Ålesund Ny-Ålesund |
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Kiruna Ny Ålesund Ny-Ålesund |
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Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-20-5437-2020 https://noa.gwlb.de/receive/cop_mods_00051465 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00051121/acp-20-5437-2020.pdf https://acp.copernicus.org/articles/20/5437/2020/acp-20-5437-2020.pdf |
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https://doi.org/10.5194/acp-20-5437-2020 |
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00051465 2023-05-15T17:04:23+02:00 Fourier transform infrared time series of tropospheric HCN in eastern China: seasonality, interannual variability, and source attribution Sun, Youwen Liu, Cheng Zhang, Lin Palm, Mathias Notholt, Justus Yin, Hao Vigouroux, Corinne Lutsch, Erik Wang, Wei Shan, Changong Blumenstock, Thomas Nagahama, Tomoo Morino, Isamu Mahieu, Emmanuel Strong, Kimberly Langerock, Bavo De Mazière, Martine Hu, Qihou Zhang, Huifang Petri, Christof Liu, Jianguo 2020-05 electronic https://doi.org/10.5194/acp-20-5437-2020 https://noa.gwlb.de/receive/cop_mods_00051465 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00051121/acp-20-5437-2020.pdf https://acp.copernicus.org/articles/20/5437/2020/acp-20-5437-2020.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-20-5437-2020 https://noa.gwlb.de/receive/cop_mods_00051465 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00051121/acp-20-5437-2020.pdf https://acp.copernicus.org/articles/20/5437/2020/acp-20-5437-2020.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2020 ftnonlinearchiv https://doi.org/10.5194/acp-20-5437-2020 2022-02-08T22:36:23Z We analyzed seasonality and interannual variability of tropospheric hydrogen cyanide (HCN) columns in densely populated eastern China for the first time. The results were derived from solar absorption spectra recorded with a ground-based high-spectral-resolution Fourier transform infrared (FTIR) spectrometer in Hefei (31∘54′ N, 117∘10′ E) between 2015 and 2018. The tropospheric HCN columns over Hefei, China, showed significant seasonal variations with three monthly mean peaks throughout the year. The magnitude of the tropospheric HCN column peaked in May, September, and December. The tropospheric HCN column reached a maximum monthly mean of (9.8±0.78)×1015 molecules cm−2 in May and a minimum monthly mean of (7.16±0.75)×1015 molecules cm−2 in November. In most cases, the tropospheric HCN columns in Hefei (32∘ N) are higher than the FTIR observations in Ny-Ålesund (79∘ N), Kiruna (68∘ N), Bremen (53∘ N), Jungfraujoch (47∘ N), Toronto (44∘ N), Rikubetsu (43∘ N), Izana (28∘ N), Mauna Loa (20∘ N), La Reunion Maido (21∘ S), Lauder (45∘ S), and Arrival Heights (78∘ S) that are affiliated with the Network for Detection of Atmospheric Composition Change (NDACC). Enhancements of tropospheric HCN column were observed between September 2015 and July 2016 compared to the same period of measurements in other years. The magnitude of the enhancement ranges from 5 % to 46 % with an average of 22 %. Enhancement of tropospheric HCN (ΔHCN) is correlated with the concurrent enhancement of tropospheric CO (ΔCO), indicating that enhancements of tropospheric CO and HCN were due to the same sources. The GEOS-Chem tagged CO simulation, the global fire maps, and the potential source contribution function (PSCF) values calculated using back trajectories revealed that the seasonal maxima in May are largely due to the influence of biomass burning in Southeast Asia (SEAS) (41±13.1 %), Europe and boreal Asia (EUBA) (21±9.3 %), and Africa (AF) (22±4.7 %). The seasonal maxima in September are largely due to the influence of biomass burnings in EUBA (38±11.3 %), AF (26±6.7 %), SEAS (14±3.3 %), and North America (NA) (13.8±8.4 %). For the seasonal maxima in December, dominant contributions are from AF (36±7.1 %), EUBA (21±5.2 %), and NA (18.7±5.2 %). The tropospheric HCN enhancement between September 2015 and July 2016 at Hefei (32∘ N) was attributed to an elevated influence of biomass burnings in SEAS, EUBA, and Oceania (OCE) in this period. In particular, an elevated number of fires in OCE in the second half of 2015 dominated the tropospheric HCN enhancement between September and December 2015. An elevated number of fires in SEAS in the first half of 2016 dominated the tropospheric HCN enhancement between January and July 2016. Article in Journal/Newspaper Kiruna Ny Ålesund Ny-Ålesund Niedersächsisches Online-Archiv NOA Ny-Ålesund Kiruna Arrival Heights ENVELOPE(166.650,166.650,-77.817,-77.817) Atmospheric Chemistry and Physics 20 9 5437 5456 |