Fu Chuan-Bo, Dan Li, Tong Jin-He, Xu Wen-Shuai
Hainan Institute of Meteorological Science, Haikou 570203, China.
Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China.
Huan Jing Ke Xue. 2023 Sep 8;44(9):4799-4808. doi: 10.13227/j.hjkx.202209233.
Based on ambient air quality data, meteorological observation data, and satellite remote sensing data, the temporal and spatial variations in ozone (O) pollution, the sensitivity of O, and its relationship with meteorological factors in Hainan Island were analyzed in this study. The results showed that the maximum daily 8-h moving mean (O-8h) in western and northern cities in Hainan Island was higher than that in the central, eastern, and southern cities. O-8h was the highest in 2015, and O-8h exceeding the standard proportion was the largest in 2019. In addition, O-8h was positively correlated with average temperature (<0.1), sunshine duration (<0.01), total solar radiation (<0.01), atmospheric pressure, and average wind speed and was negatively correlated with precipitation (<0.05) and relative humidity. The satellite remote sensing data showed that the tropospheric NO column concentration (NO-OMI) and HCHO column concentration (HCHO-OMI) displayed opposite trends in Hainan Island from 2015 to 2020. Compared with those in 2015, NO-OMI increased by 7.74% and HCHO-OMI decreased by 10.2% in 2020. Moreover, Hainan Island belongs to the NO control area, and the FNR value exhibited a fluctuating downward trend in the past 6 years, with a trend coefficient and climatic trend rate of -0.514 and -0.123 a, respectively. A strong correlation was observed between meteorological factors and the FNR value of Hainan Island.
基于环境空气质量数据、气象观测数据和卫星遥感数据，本研究分析了海南岛臭氧（O）污染的时空变化、O的敏感性及其与气象因子的关系。结果表明，海南岛西部和北部城市的日最大8小时滑动平均值（O-8h）高于中部、东部和南部城市。O-8h在2015年最高，O-8h超标比例在2019年最大。此外，O-8h与平均气温（<0.1）、日照时数（<0.01）、总太阳辐射（<0.01）、大气压力和平均风速呈正相关，与降水量（<0.05）和相对湿度呈负相关。卫星遥感数据显示，2015年至2020年期间，海南岛对流层NO柱浓度（NO-OMI）和HCHO柱浓度（HCHO-OMI）呈现相反趋势。与2015年相比，2020年NO-OMI增加了7.74%，HCHO-OMI下降了10.2%。此外，海南岛属于NO控制区，过去6年FNR值呈波动下降趋势，趋势系数和气候趋势率分别为-0.514和-0.123 a。海南岛气象因子与FNR值之间存在较强的相关性。
