| 基于OMI卫星与地面观测数据的广东省臭氧生成敏感性分析 |
| 摘要点击 1911 全文点击 439 投稿时间：2023-11-30 修订日期：2024-02-23 |
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| 中文关键词 臭氧生成敏感性 气象 卫星遥感 臭氧生成敏感性指标（FNR） 广东省 |
| 英文关键词 O3 generation sensitivity meteorology satellite remote sensing ratio of HCHO to NO2（FNR） Guangdong Province |
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| 中文摘要 |
| 基于臭氧（O3）检测仪卫星遥感数据及再分析气象数据,分析了广东省2015~2020年对流层二氧化氮（NO2）和甲醛（HCHO）时空分布和变化趋势、O3生成敏感性的变化特征其与气象参数的关系.结果表明,广东省2015~2020年对流层NO2柱浓度呈现出以珠三角地区为高值中心向四周逐渐减少的分布特征,珠三角地区的下降趋势最为显著；HCHO柱浓度呈现出珠三角地区高,其他地区低的分布特征,大部分地区的HCHO柱浓度呈现下降趋势,但在空间分布上较为分散；大部分区域的FNR值呈现出上升的趋势,VOCs-NOx协同控制区的范围逐渐减少,NOx控制区的面积不断增加,至2020年,广东省VOCs控制区、VOCs-NOx协同控制区和NOx控制区的比例分别为0.5%、13.1%和86.4%；O3生成敏感性指标FNR值呈现增加趋势,与2 m气温、相对湿度、地表向下短波辐射和边界层高度呈正相关关系,与10 m风速和海平面气压呈负相关关系,影响最大的3个气象因子为地表下行短波辐射（DSSR）、相对湿度和2 m气温. |
| 英文摘要 |
| Based on Ozone （O3） Monitoring Instrument satellite remoting sensing data and reanalysis meteorological data, an analysis was conducted on the spatiotemporal distribution and trends of tropospheric nitrogen dioxide （NO2） and formaldehyde （HCHO） in Guangdong Province from 2015 to 2020. The study also examined the changing characteristics of O3 generation sensitivity in relation to meteorological parameters. The results indicated that during 2015-2020, the tropospheric NO2 column concentration in Guangdong Province exhibited a distribution pattern with the Pearl River Delta （PRD） Region as the high-value center gradually decreasing towards the surrounding areas, with the most substantial decline observed in the Pearl River Delta. The HCHO column concentration showed a pattern of higher values in the PRD and lower values in the other regions. While most areas exhibited a decreasing trend in HCHO column concentration, the spatial distribution was more dispersed compared to that of NO2. In most regions, the ratio of HCHO to NO2 （FNR） showed an increasing trend. The area under VOCs-NOx synergistic control decreased, whereas the area under NOx control increased. By 2020, the proportions of VOCs control area, VOCs-NOx synergistic control area, and NOx control area in Guangdong Province were 0.5%, 13.1%, and 86.4%, respectively. The FNR value showed an increasing trend； a positive correlation with 2 m temperature, relative humidity, downward surface shortwave radiation, and boundary layer height； and a negative correlation with 10 m wind speed and sea level pressure. The three most influential meteorological factors were downward surface shortwave radiation（DSSR）, relative humidity, and 2 m temperature, impacting the FNR value the most. |
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