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High resolution carbon dioxide emission gridded data for China derived from point sources
Jinnan Wang1, Bofeng Cai, Lixiao Zhang
1The Center for Climate Change and Environmental Policy, Chinese Academy for Environmental Planning , 8 Dayangfang, Beiyuan Road, Chaoyang District, Beijing 100012, China.
Environmental Science & Technology
|May 21, 2014
Summary
High-resolution carbon dioxide (CO2) emission mapping in China is crucial for carbon research and reduction. This study developed a 10 km CO2 emission map, revealing unbalanced spatial distribution primarily from industrial sources.
Area of Science:
- Environmental Science
- Earth Science
- Climate Science
Background:
- China's carbon cycle research and reduction strategies require accurate CO2 emission data, which is currently lacking in quality and consistency.
- Existing CO2 emission data for China suffers from low quality and regional inconsistencies, hindering effective environmental management.
- The development of high spatial resolution emission data is essential for understanding and mitigating carbon emissions in China.
Purpose of the Study:
- To create a high spatial resolution (10 km) carbon dioxide (CO2) emission map for China.
- To provide a more spatially accurate CO2 emission dataset compared to existing global products like EDGAR.
- To inform China's carbon cycle research and carbon reduction strategies with improved emission data.
Main Methods:
- Utilized a bottom-up methodology, leveraging point emission sources and supporting data.
- Developed a 10 km resolution gridded CO2 emission dataset for China.
- Compared the accuracy and spatial distribution of the developed map against the EDGAR dataset.
Main Results:
- Industrial point sources account for the predominant share (84%) of total CO2 emissions in China.
- The developed CO2 emission map exhibits higher spatial accuracy than the EDGAR data.
- CO2 emissions in China show a highly unbalanced spatial distribution with strong positive spatial autocorrelation, concentrated in key regions like Jing-Jin-Ji, Yangtze River Delta, and Pearl River Delta.
- Management of approximately 70% of China's CO2 emissions can be achieved by supervising just 1% of the total land area.
Conclusions:
- The 10 km resolution CO2 emission map provides a valuable tool for China's carbon management and research.
- The bottom-up approach, focusing on industrial point sources, is effective for mapping Chinese CO2 emissions.
- Targeted emission control in key urban and industrial regions can significantly impact national carbon reduction efforts.
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