Study of Methane Emission and Geological Sources in Northeast China Permafrost Area Related to Engineering Construction and Climate Disturbance Based on Ground Monitoring and AIRS
China’s largest high-latitude permafrost distribution zone is in Northeast China. With the intensification of global warming and engineering construction, the carbon stored in permafrost will gradually thaw and be released in the form of methane gas. However, research on the changes in methane conce...
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ftdoajarticles:oai:doaj.org/article:40ec599e263c4de5bf9a256a1bcf70ca 2023-09-26T15:21:54+02:00 Study of Methane Emission and Geological Sources in Northeast China Permafrost Area Related to Engineering Construction and Climate Disturbance Based on Ground Monitoring and AIRS Zhichao Xu Yunshan Chen Wei Shan Chao Deng Min Ma Yuexing Wu Yu Mao Xingyu Ding Jing Ji 2023-08-01T00:00:00Z https://doi.org/10.3390/atmos14081298 https://doaj.org/article/40ec599e263c4de5bf9a256a1bcf70ca EN eng MDPI AG https://www.mdpi.com/2073-4433/14/8/1298 https://doaj.org/toc/2073-4433 doi:10.3390/atmos14081298 2073-4433 https://doaj.org/article/40ec599e263c4de5bf9a256a1bcf70ca Atmosphere, Vol 14, Iss 1298, p 1298 (2023) Northeast China permafrost methane concentration spatiotemporal distribution geological emission sources Meteorology. Climatology QC851-999 article 2023 ftdoajarticles https://doi.org/10.3390/atmos14081298 2023-08-27T00:36:06Z China’s largest high-latitude permafrost distribution zone is in Northeast China. With the intensification of global warming and engineering construction, the carbon stored in permafrost will gradually thaw and be released in the form of methane gas. However, research on the changes in methane concentration and emission sources in this area is still unclear. In this paper, the AIRS (Atmospheric Infrared Sounder) data carried by the Aqua satellite were used to analyze the distribution and change trends in the overall methane concentration in the near-surface troposphere in Northeast China from 2003 to 2022. These data, combined with national meteorological and on-site monitoring data, were used to study the methane emission characteristics and sources in the permafrost area in Northeast China. The results show that the methane concentration in the near-surface troposphere of Northeast China is mainly concentrated in the permafrost area of the Da and Xiao Xing’an Mountains. From 2003 to 2022, the methane concentration in the near-surface troposphere of the permafrost area in Northeast China showed a rapid growth trend, with an average linear trend growth rate of 4.787 ppbv/a. In addition, the methane concentration in the near-surface troposphere of the permafrost area shows a significant bimodal seasonal variation pattern. The first peak appears in summer (June–August), with its maximum value appearing in August, and the second peak appears in winter (December–February), with its maximum value appearing in December. Combined with ground surface methane concentration monitoring, it was found that the maximum annual ground surface methane concentration in degraded permafrost areas occurred in spring, causing the maximum average growth rate in methane concentration, also in spring, in the near-surface troposphere of permafrost areas in Northeast China (with an average value of 6.05 ppbv/a). The growth rate of methane concentration in the southern permafrost degradation zone is higher than that in the northern ... Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Atmosphere 14 8 1298 |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Northeast China permafrost methane concentration spatiotemporal distribution geological emission sources Meteorology. Climatology QC851-999 |
spellingShingle |
Northeast China permafrost methane concentration spatiotemporal distribution geological emission sources Meteorology. Climatology QC851-999 Zhichao Xu Yunshan Chen Wei Shan Chao Deng Min Ma Yuexing Wu Yu Mao Xingyu Ding Jing Ji Study of Methane Emission and Geological Sources in Northeast China Permafrost Area Related to Engineering Construction and Climate Disturbance Based on Ground Monitoring and AIRS |
topic_facet |
Northeast China permafrost methane concentration spatiotemporal distribution geological emission sources Meteorology. Climatology QC851-999 |
description |
China’s largest high-latitude permafrost distribution zone is in Northeast China. With the intensification of global warming and engineering construction, the carbon stored in permafrost will gradually thaw and be released in the form of methane gas. However, research on the changes in methane concentration and emission sources in this area is still unclear. In this paper, the AIRS (Atmospheric Infrared Sounder) data carried by the Aqua satellite were used to analyze the distribution and change trends in the overall methane concentration in the near-surface troposphere in Northeast China from 2003 to 2022. These data, combined with national meteorological and on-site monitoring data, were used to study the methane emission characteristics and sources in the permafrost area in Northeast China. The results show that the methane concentration in the near-surface troposphere of Northeast China is mainly concentrated in the permafrost area of the Da and Xiao Xing’an Mountains. From 2003 to 2022, the methane concentration in the near-surface troposphere of the permafrost area in Northeast China showed a rapid growth trend, with an average linear trend growth rate of 4.787 ppbv/a. In addition, the methane concentration in the near-surface troposphere of the permafrost area shows a significant bimodal seasonal variation pattern. The first peak appears in summer (June–August), with its maximum value appearing in August, and the second peak appears in winter (December–February), with its maximum value appearing in December. Combined with ground surface methane concentration monitoring, it was found that the maximum annual ground surface methane concentration in degraded permafrost areas occurred in spring, causing the maximum average growth rate in methane concentration, also in spring, in the near-surface troposphere of permafrost areas in Northeast China (with an average value of 6.05 ppbv/a). The growth rate of methane concentration in the southern permafrost degradation zone is higher than that in the northern ... |
format |
Article in Journal/Newspaper |
author |
Zhichao Xu Yunshan Chen Wei Shan Chao Deng Min Ma Yuexing Wu Yu Mao Xingyu Ding Jing Ji |
author_facet |
Zhichao Xu Yunshan Chen Wei Shan Chao Deng Min Ma Yuexing Wu Yu Mao Xingyu Ding Jing Ji |
author_sort |
Zhichao Xu |
title |
Study of Methane Emission and Geological Sources in Northeast China Permafrost Area Related to Engineering Construction and Climate Disturbance Based on Ground Monitoring and AIRS |
title_short |
Study of Methane Emission and Geological Sources in Northeast China Permafrost Area Related to Engineering Construction and Climate Disturbance Based on Ground Monitoring and AIRS |
title_full |
Study of Methane Emission and Geological Sources in Northeast China Permafrost Area Related to Engineering Construction and Climate Disturbance Based on Ground Monitoring and AIRS |
title_fullStr |
Study of Methane Emission and Geological Sources in Northeast China Permafrost Area Related to Engineering Construction and Climate Disturbance Based on Ground Monitoring and AIRS |
title_full_unstemmed |
Study of Methane Emission and Geological Sources in Northeast China Permafrost Area Related to Engineering Construction and Climate Disturbance Based on Ground Monitoring and AIRS |
title_sort |
study of methane emission and geological sources in northeast china permafrost area related to engineering construction and climate disturbance based on ground monitoring and airs |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/atmos14081298 https://doaj.org/article/40ec599e263c4de5bf9a256a1bcf70ca |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Atmosphere, Vol 14, Iss 1298, p 1298 (2023) |
op_relation |
https://www.mdpi.com/2073-4433/14/8/1298 https://doaj.org/toc/2073-4433 doi:10.3390/atmos14081298 2073-4433 https://doaj.org/article/40ec599e263c4de5bf9a256a1bcf70ca |
op_doi |
https://doi.org/10.3390/atmos14081298 |
container_title |
Atmosphere |
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14 |
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8 |
container_start_page |
1298 |
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1778147322082885632 |