用四种化学运输模型对德国的模拟臭氧度进行动态评估
Markus Thürkow1, Martijn Schaap2, Richard Kranenburg3
1FUB, Institute of Meteorology, Freie Universität Berlin, Carl-Heinrich-Becker-Weg 6-10, 12165 Berlin, Germany.
The Science of the total environment
|October 10, 2023
概括
使用四种化学运输模型 (CTM) 进行的区域臭氧变异模拟显示出良好的表现,整体介质的表现优于单个模型. 模型更好地捕捉了农村臭氧和春季条件,但低估了臭氧.
科学领域:
- 大气化学和物理大气化学和物理
- 环境建模环境建模
背景情况:
- 使用化学运输模型 (CTM) 模拟区域臭氧变异性存在重大挑战.
- 精确的臭氧建模对于了解空气质量和气候影响至关重要.
研究的目的:
- 在德国全国范围内评估四个区域CTM (LOTOS-EUROS,REM-CALGRID,COSMO-MUSCAT,WRF-Chem) 的表现.
- 在操作和动态评估中评估模型性能,包括臭氧对温度的反应.
- 为了比较模型协议与城市和农村背景站的测量以及跨季节的测量.
主要方法:
- 在2019年使用四个区域CTM进行了多模型相互比较.
- 使用MDA8 O3指标 (时间相关性,RMSE) 进行了运营评估.
- 引入了一个新的指标来评估臭氧对温度的动态反应.
主要成果:
- 所有模型都表现出良好的运行性能,平均时间相关性为0.77-0.87和RMSE为16.320.6μg m−3.3.
- 模型在农村背景站的表现通常比在城市的表现更好,在春天和夏天的表现更好.
- 整体平均值与单个模型相比,与测量结果的一致性有所改善;模型低估了夏季臭氧的温度灵敏度.
结论:
- 评估的CTM的整体平均值提供了一个更可靠的区域臭氧变化的模拟.
- 鉴定了模型在春季表现背景臭氧和夏季表现臭氧温度敏感度方面的缺陷.
- 建议专注于生物排放和干沉积诊断,并将分析扩展到更长的时间框架.
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