Estimating CO2 (carbon dioxide) emissions at urban scales by DMSP/OLS (Defense Meteorological Satellite Program's Operational Linescan System) nighttime light imagery: Methodological challenges and a case study for China
Publication in refereed journal

香港中文大學研究人員

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摘要The role of urban carbon dioxide (CO2) emissions has attracted city authorities' attention. Several entities face challenges when developing inventory method for local communities, due to limited data. This study proposes a top-down method to estimate CO2 emissions at an urban scale, using nighttime light imagery and statistical energy data. We find that nighttime light imagery is appropriate in CO2 estimations at an urban scale. The proposed method is particularly significant for the developing countries, of which CO2 emissions increase rapidly but lack in energy data at an urban scale. It also contains some limitations due to the inherent shortcomings of the data sources and methodological errors. It has very limited value when applying in urban areas with rare population. A case study is implemented in urban China. The results show that the share of urban emissions increases over the period of 1995-2010. Meanwhile, per capita CO2 emissions in China continuously grow, the values of which are much higher than the national averages. In a spatiotemporal perspective, per capita CO2 emissions in eastern coastal China are lower than that in inland China. These results have significant implications for local authorities to guide their policies in carbon reduction and climate change. (C) 2014 Elsevier Ltd. All rights reserved.
著者Meng LN, Graus W, Worrell E, Huang B
期刊名稱Energy
出版年份2014
月份7
日期15
卷號71
出版社PERGAMON-ELSEVIER SCIENCE LTD
頁次468 - 478
國際標準期刊號0360-5442
電子國際標準期刊號1873-6785
語言英式英語
關鍵詞Carbon dioxide emissions; Top-down method; Urban China
Web of Science 學科類別Energy & Fuels; ENERGY & FUELS; Thermodynamics; THERMODYNAMICS

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