蒙特利尔议定书
环境科学
中国
臭氧层
气候变化
臭氧消耗
温室气体
气候学
制冷剂
排放清单
大气科学
气象学
臭氧
地理
工程类
空气质量指数
地质学
气体压缩机
生物
考古
机械工程
生态学
作者
Jing Wu,Tong Li,Jing Wang,Dayu Zhang,Peng Lin
标识
DOI:10.1021/acs.est.1c07344
摘要
Due to chlorodifluoromethane's (CHClF2, HCFC-22) dual environmental impact on climate change and ozone depletion, its emissions have attracted international attention. In this study, a set of national-provincial-gridded (1° × 1°) emission estimation methods were built and applied to obtain the national, provincial, and gridded emission inventories in China in 1990-2019. In addition, the HCFC-22 emission reduction potential of different emission scenarios was analyzed. The results show that China's HCFC-22 emissions reached a peak in 2017 and that the cumulative emissions in 1990-2019 were 1576.8 (1348.2-1819.0) kt (equivalent to 86.7 kt CFC-11 and 2854.1 Mt CO2). China's HCFC-22 emissions in the east were higher than those in the west, and the emissions in the south were higher than those in the north. Under the control of the Montreal Protocol, China will reduce the cumulative emissions of 17 840.8 kt (avoiding 0.08° of global warming by 2056) in 2020-2056. If the disposal refrigerant can be effectively recycled in the future, the HCFC-22 emission reduction in this period will reach 18 020.3 kt. The established emission estimation methods and obtained results can provide scientific and technological support for ozone layer protection and for addressing climate change.
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