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| DOI | 10.3390/rs16071149 |
| Satellite-Derived Estimate of City-Level Methane Emissions from Calgary, Alberta, Canada | |
| Xing, Zhenyu; Barchyn, Thomas E.; Vollrath, Coleman; Gao, Mozhou; Hugenholtz, Chris | |
| 发表日期 | 2024 |
| EISSN | 2072-4292 |
| 起始页码 | 16 |
| 结束页码 | 7 |
| 卷号 | 16期号:7 |
| 英文摘要 | Cities are important sources of anthropogenic methane emissions. Municipal governments can play a role in reducing those emissions to support climate change mitigation, but they need information on the emission rate to contextualize mitigation actions and track progress. Herein, we examine the application of satellite data from the TROPOspheric Monitoring Instrument (TROPOMI) to estimate city-level methane emission rates in a case study of the City of Calgary, Alberta, Canada. Due to low and variable annual observational coverage, we integrated valid TROPOMI observations over three years (2020-2022) and used mass balance modeling to derive a long-term mean estimate of the emission rate. The resulting column-mean dry-air mole fraction (XCH4) enhancement over Calgary was small (4.7 ppb), but within the city boundaries, we identified local hot spots in the vicinity of known emission sources (wastewater treatment facilities and landfills). The city-level emission estimate from mass balance was 215.4 +/- 132.8 t CH4/d. This estimate is approximately four times larger than estimates from Canada's gridded National Inventory Report of anthropogenic CH4 emissions and six times larger than the Emissions Database for Global Atmospheric Research (EDGAR v8.0). We note that valid TROPOMI observations are more common in warmer months and occur during a narrow daily overpass time slot over Calgary. The limited valid observations in combination with the constrained temporal observational coverage may bias the emission estimate. Overall, the findings from this case study highlight an approach to derive a screening-level estimate of city-level methane emission rates using TROPOMI data in settings with low observational coverage. |
| 英文关键词 | methane; TROPOMI; mass balance; emission estimate; city level |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology |
| WOS记录号 | WOS:001201578800001 |
| 来源期刊 | REMOTE SENSING
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/300260 |
| 作者单位 | University of Calgary |
| 推荐引用方式 GB/T 7714 | Xing, Zhenyu,Barchyn, Thomas E.,Vollrath, Coleman,et al. Satellite-Derived Estimate of City-Level Methane Emissions from Calgary, Alberta, Canada[J],2024,16(7). |
| APA | Xing, Zhenyu,Barchyn, Thomas E.,Vollrath, Coleman,Gao, Mozhou,&Hugenholtz, Chris.(2024).Satellite-Derived Estimate of City-Level Methane Emissions from Calgary, Alberta, Canada.REMOTE SENSING,16(7). |
| MLA | Xing, Zhenyu,et al."Satellite-Derived Estimate of City-Level Methane Emissions from Calgary, Alberta, Canada".REMOTE SENSING 16.7(2024). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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