全球近地层臭氧时空分布特征及其来源解析  

Quantitative sources of global surface ozone and spatial and temporal distribution characteristics

作　　者：费冬冬 侯雪伟[2] 魏蕾 FEI Dong-dong;HOU Xue-wei;WEI Lei(Huatian Engineering&Technology,China Metallurgical Group Corporation,Nanjing 210019,China;Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science&Technology,Nanjing 210044,China;Beijing Weather Modification Office,Beijing 100089,China)

机构地区：[1]中冶华天工程技术有限公司,江苏南京210019 [2]南京信息工程大学大气物理学院,气象灾害教育部重点实验室,气象灾害预报预警与评估协同创新中心,江苏南京210044 [3]北京市人工影响天气办公室,北京100089

出　　处：《中国环境科学》2021年第7期3004-3016,共13页China Environmental Science

基　　金：国家重点研发计划(2016YFA0602003);国家自然科学基金项目(41605096,41705119)。

摘　　要：根据东亚酸沉降网(EANET)和全球温室气体数据中心(WDCGG)等观测资料,对比各地区近地面O_(3)的季节变化特征,在全球大气化学传输模式MOZART-4中引入在线源追踪方法,结合收支分析,确认各项作用对不同地区O_(3)的贡献量.研究表明,模拟结果能够再现各地区O_(3)的季节变化特征以及收支量:清洁背景地区(海洋站居多)近地面O_(3)各项收支量较小,体积分数在-3×10^(-9)-3×10^(-9)/d之间,且净的化学作用大多处于损耗O_(3)的状态;大多数陆地测站净的光化学作用为产生O_(3)(约33.8×10^(-9)/d).近地面O_(3)的源主要来自对流层内部,平流层的贡献较小(约10×10^(-9)).对于极地及清洁背景地区,平流层的贡献是O_(3)季节变化的重要原因.平流层的贡献呈现明显的季节变化,即冬季最大(约20.7×10^(-9)),夏季最低(约2×10^(-9)).Based on observational data from the Acid Deposition Monitoring Network in East Asia(EANET)and World Data Centre for Greenhouse Gases(WDCGG),the seasonal variation characteristics of surface ozone in various regions was compared.By MOZART-4model and the online tagging method,combined with the analysis of O_(3) budget,the contribution of various effects to ozone were confirmed in different regions.The model-simulated O_(3) and its precursors agreed well with observed values and other researches in the troposphere.The analyses of O_(3) budgets at surface showed the values of budgets were relatively low(-3×10^(-9)~3×10^(-9)/d),and the chemistry was net loss of O_(3) over clean background regions(most near ocean).Over continental region,the chemistry was net production of O_(3)(~33.8×10^(-9)/d),and the main sources of surface O_(3) were from inside of troposphere,while the contributions of stratospheric O_(3) were relatively low(~10×10^(-9)).Over polar and clean region,the contributions of stratospheric O_(3) showed obvious seasonal changes with the largest in winter(~20.7×10^(-9))and the lowest in summer(~2×10^(-9)),which account for the O_(3) seasonal variations.

关 键 词：对流层O_(3) 全球大气化学模式 在线源追踪 O_(3)收支 季节变化 

分 类 号：X515[环境科学与工程—环境工程]