中国“煤改气”转型期间的天然气短缺，造成了air pollution的大量重新分配
Natural gas shortages during the "coal-to-gas" transition in China have caused a large redistribution of air pollution
摘要：
中国的“煤制气”战略旨在通过在中国北方推广使用清洁低碳燃料来减少煤炭消耗和相关的空气污染。我们发现，除了气象影响，这些措施还使北京及周边地区（“2+26”试点城市）2017年冬季的细颗粒物质（PM2.5）浓度平均下降了约14%。然而，局部空气质量改善的同时，中国南方大面积地区的PM2.5浓度激增约15%。我们发现，污染转移，导致排放量的转移是由天然气短缺，在南方，由于在北方的“煤改气”过渡。天然气的全面短缺极大地危及了2017年冬季“煤改气”战略的空气质量效益，也反映了中国清洁能源转型中的结构性挑战和潜在威胁。
英文摘要：
The Chinese "coal-to-gas" strategy aims at reducing coal consumption and related air pollution by promoting the use of clean and low carbon fuels in northern China. Here we show that on top of meteorological influences, these measures achieved an average decrease of fine particulate matter (PM2.5) concentrations of ~14% during winter 2017 in Beijing and surrounding areas (the "2+26" pilot cities). However, the localized air quality improvement was accompanied by a contemporaneous ~15% upsurge of PM2.5 concentrations over large areas in southern China. We find that the pollution transfer that resulted from a shift in emissions was caused by a natural gas shortage in the south due to the "coal-to-gas" transition in the north. The overall shortage of natural gas greatly jeopardized the air quality benefits of the "coal-to-gas" strategy in winter 2017 and reflects structural challenges and potential threats in China's clean energy transition.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
