Emissions of methane from coal fields, thermal power plants, and wetlands and their implications for atmospheric methane across the south Asian region
<p>Atmospheric methane (CH<span class="inline-formula"><sub>4</sub></span>) is a potent climate change agent responsible for a fraction of global warming. The present study investigated the spatiotemporal variability of atmospheric-column-averaged CH<span c...
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Copernicus Publications
2024-11-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://acp.copernicus.org/articles/24/12843/2024/acp-24-12843-2024.pdf |
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| author | M. V. Dangeti M. Pathakoti K. L. Asuri S. Peethani I. Shaik R. Krishnan Sundara V. K. Sagar R. Pushpanathan Y. K. Tiwari P. Chauhan |
| author_facet | M. V. Dangeti M. Pathakoti K. L. Asuri S. Peethani I. Shaik R. Krishnan Sundara V. K. Sagar R. Pushpanathan Y. K. Tiwari P. Chauhan |
| author_sort | M. V. Dangeti |
| collection | DOAJ |
| description | <p>Atmospheric methane (CH<span class="inline-formula"><sub>4</sub></span>) is a potent climate change agent responsible for a fraction of global warming. The present study investigated the spatiotemporal variability of atmospheric-column-averaged CH<span class="inline-formula"><sub>4</sub></span> (XCH<span class="inline-formula"><sub>4</sub></span>) concentrations using data from the Greenhouse gases Observing SATellite (GOSAT) and the TROPOspheric Monitoring Instrument on board the Sentinel-5 Precursor (S5P/TROPOMI) from 2009 to 2022 over the south Asian region. During the study period, the long-term trends in XCH<span class="inline-formula"><sub>4</sub></span> increased from 1700 to 1950 ppb, with an annual growth rate of 8.76 ppb yr<span class="inline-formula"><sup>−1</sup></span>. Among all natural and anthropogenic sources of CH<span class="inline-formula"><sub>4</sub></span>, the rate of increase in XCH<span class="inline-formula"><sub>4</sub></span> was higher over the coal site at about 10.15 <span class="inline-formula">±</span> 0.55 ppb yr<span class="inline-formula"><sup>−1</sup></span> (Paschim Bardhaman) followed by Mundra Ultra Mega Power Project at about 9.72 <span class="inline-formula">±</span> 0.41 ppb yr<span class="inline-formula"><sup>−1</sup></span>. Most of the wetlands exhibit an annual trend of XCH<span class="inline-formula"><sub>4</sub></span> of more than 9.50 ppb yr<span class="inline-formula"><sup>−1</sup></span>, with a minimum rate of 8.72 <span class="inline-formula">±</span> 0.3 ppb yr<span class="inline-formula"><sup>−1</sup></span> over Wular Lake. The WetCHARTs-based emissions of CH<span class="inline-formula"><sub>4</sub></span> from the wetlands were minimal during the winter and pre-monsoon seasons. Maximum CH<span class="inline-formula"><sub>4</sub></span> emissions were reported during the monsoon, with a maximum value of 23.62 <span class="inline-formula">±</span> 3.66 mg m<span class="inline-formula"><sup>−2</sup></span> per month over the Sundarbans Wetland. For the 15 Indian agroclimatic zones, significant high emissions of CH<span class="inline-formula"><sub>4</sub></span> were observed over the Middle Gangetic Plain, Trans-Gangetic Plain, Upper Gangetic Plain, Eastern Coastal Plains, Lower Gangetic Plain, and East Gangetic Plain. Further, the bottom-up anthropogenic CH<span class="inline-formula"><sub>4</sub></span> emissions data are mapped against the XCH<span class="inline-formula"><sub>4</sub></span> concentrations, and a high correlation was found in the Indo-Gangetic Plain region, indicating the hotspots of anthropogenic CH<span class="inline-formula"><sub>4</sub></span>.</p> |
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| institution | Kabale University |
| issn | 1680-7316 1680-7324 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Copernicus Publications |
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| series | Atmospheric Chemistry and Physics |
| spelling | doaj-art-d37d7103816b4a4ea82654c7adcf49502024-11-20T05:58:08ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242024-11-0124128431285910.5194/acp-24-12843-2024Emissions of methane from coal fields, thermal power plants, and wetlands and their implications for atmospheric methane across the south Asian regionM. V. Dangeti0M. Pathakoti1K. L. Asuri2S. Peethani3I. Shaik4R. Krishnan Sundara5V. K. Sagar6R. Pushpanathan7Y. K. Tiwari8P. Chauhan9National Remote Sensing Centre (NRSC), Indian Space Research Organisation (ISRO), Hyderabad, 500037, IndiaNational Remote Sensing Centre (NRSC), Indian Space Research Organisation (ISRO), Hyderabad, 500037, IndiaNational Remote Sensing Centre (NRSC), Indian Space Research Organisation (ISRO), Hyderabad, 500037, Indiaformerly at: The International Center for Agricultural Research in the Dry Areas, Cairo, EgyptNational Remote Sensing Centre (NRSC), Indian Space Research Organisation (ISRO), Hyderabad, 500037, IndiaLab for Spatial Informatics, International Institute of Information Technology (IIIT), Hyderabad, 5000084, IndiaIndian Institute of Tropical Meteorology (IITM), Pune, 411008, IndiaICAR-Indian Institute of Soil and Water Conservation, Research Centre, Koraput, Odisha, 763002, IndiaIndian Institute of Tropical Meteorology (IITM), Pune, 411008, IndiaNational Remote Sensing Centre (NRSC), Indian Space Research Organisation (ISRO), Hyderabad, 500037, India<p>Atmospheric methane (CH<span class="inline-formula"><sub>4</sub></span>) is a potent climate change agent responsible for a fraction of global warming. The present study investigated the spatiotemporal variability of atmospheric-column-averaged CH<span class="inline-formula"><sub>4</sub></span> (XCH<span class="inline-formula"><sub>4</sub></span>) concentrations using data from the Greenhouse gases Observing SATellite (GOSAT) and the TROPOspheric Monitoring Instrument on board the Sentinel-5 Precursor (S5P/TROPOMI) from 2009 to 2022 over the south Asian region. During the study period, the long-term trends in XCH<span class="inline-formula"><sub>4</sub></span> increased from 1700 to 1950 ppb, with an annual growth rate of 8.76 ppb yr<span class="inline-formula"><sup>−1</sup></span>. Among all natural and anthropogenic sources of CH<span class="inline-formula"><sub>4</sub></span>, the rate of increase in XCH<span class="inline-formula"><sub>4</sub></span> was higher over the coal site at about 10.15 <span class="inline-formula">±</span> 0.55 ppb yr<span class="inline-formula"><sup>−1</sup></span> (Paschim Bardhaman) followed by Mundra Ultra Mega Power Project at about 9.72 <span class="inline-formula">±</span> 0.41 ppb yr<span class="inline-formula"><sup>−1</sup></span>. Most of the wetlands exhibit an annual trend of XCH<span class="inline-formula"><sub>4</sub></span> of more than 9.50 ppb yr<span class="inline-formula"><sup>−1</sup></span>, with a minimum rate of 8.72 <span class="inline-formula">±</span> 0.3 ppb yr<span class="inline-formula"><sup>−1</sup></span> over Wular Lake. The WetCHARTs-based emissions of CH<span class="inline-formula"><sub>4</sub></span> from the wetlands were minimal during the winter and pre-monsoon seasons. Maximum CH<span class="inline-formula"><sub>4</sub></span> emissions were reported during the monsoon, with a maximum value of 23.62 <span class="inline-formula">±</span> 3.66 mg m<span class="inline-formula"><sup>−2</sup></span> per month over the Sundarbans Wetland. For the 15 Indian agroclimatic zones, significant high emissions of CH<span class="inline-formula"><sub>4</sub></span> were observed over the Middle Gangetic Plain, Trans-Gangetic Plain, Upper Gangetic Plain, Eastern Coastal Plains, Lower Gangetic Plain, and East Gangetic Plain. Further, the bottom-up anthropogenic CH<span class="inline-formula"><sub>4</sub></span> emissions data are mapped against the XCH<span class="inline-formula"><sub>4</sub></span> concentrations, and a high correlation was found in the Indo-Gangetic Plain region, indicating the hotspots of anthropogenic CH<span class="inline-formula"><sub>4</sub></span>.</p>https://acp.copernicus.org/articles/24/12843/2024/acp-24-12843-2024.pdf |
| spellingShingle | M. V. Dangeti M. Pathakoti K. L. Asuri S. Peethani I. Shaik R. Krishnan Sundara V. K. Sagar R. Pushpanathan Y. K. Tiwari P. Chauhan Emissions of methane from coal fields, thermal power plants, and wetlands and their implications for atmospheric methane across the south Asian region Atmospheric Chemistry and Physics |
| title | Emissions of methane from coal fields, thermal power plants, and wetlands and their implications for atmospheric methane across the south Asian region |
| title_full | Emissions of methane from coal fields, thermal power plants, and wetlands and their implications for atmospheric methane across the south Asian region |
| title_fullStr | Emissions of methane from coal fields, thermal power plants, and wetlands and their implications for atmospheric methane across the south Asian region |
| title_full_unstemmed | Emissions of methane from coal fields, thermal power plants, and wetlands and their implications for atmospheric methane across the south Asian region |
| title_short | Emissions of methane from coal fields, thermal power plants, and wetlands and their implications for atmospheric methane across the south Asian region |
| title_sort | emissions of methane from coal fields thermal power plants and wetlands and their implications for atmospheric methane across the south asian region |
| url | https://acp.copernicus.org/articles/24/12843/2024/acp-24-12843-2024.pdf |
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