在韩国安密昂多进行的人为二氧化碳起源追踪研究:基于STILT足迹和排放数据
Jaemin Kim1, Jin-Ah Jang1, Young-Suk Oh2
1Atmospheric Science, Department of Astronomy, Space Science, and Geology, Chungnam National University, Daejeon 34134, Republic of Korea.
The Science of the total environment
|June 11, 2023
概括
温室气体 (GHG) 源追踪对于排放控制至关重要. 这项研究量化了对韩国影响的二氧化碳 (CO2) 来源,发现国内排放主导高二氧化碳日,中国在这些时期的贡献更大.
科学领域:
- 大气化学 大气化学
- 环境科学 环境科学
- 气候变化研究 气候变化研究
背景情况:
- 了解区域温室气体 (GHG) 变化对于有效的减排政策至关重要.
- 准确地确定大气污染物的来源对于有针对性的环境管理至关重要.
研究的目的:
- 量化评估表面对二氧化碳 (CO2) 度增强的贡献 在韩国南韩的安米昂多 (AMY).
- 在高度和低度事件中区分国内外二氧化碳来源.
- 研究区域燃烧效率对二氧化碳和一氧化碳 (CO) 比率的影响.
主要方法:
- 使用了随机时间倒置拉格朗日运输 (STILT) 模型.
- 纳入人为二氧化碳排放数据用于来源分配.
- 在2018-2019年冬季分析了地面二氧化碳混合比率测量和CO2/CO比率.
主要成果:
- STILT模拟显示,与测量的二氧化碳异常存在正相关性 (r > 0.5).
- 在AMY的高二氧化碳日主要受到国内排放的影响,特别是来自首尔大都会地区.
- 中国东部 (山东,江苏-上海) 在二氧化碳排放高的日子里,二氧化碳的贡献增加,与韩国相比,燃烧效率较低.
结论:
- 与排放数据相结合的STILT模型有效地识别了表面对温室气体度升高的贡献.
- 国内排放是韩国高二氧化碳事件的主要驱动因素.
- 燃烧效率的区域差异影响污染物比率,有助于识别污染源.
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