对流层臭氧卫星与地基激光雷达精确遥感方法研究

Tropospheric ozone determines the atmospheric oxidization capacity. It is the main contributor of atmospheric photochemical smog and has associated with harmful effects on human health and ecosystem. Studies on temporal-spatial distribution and evaluation of tropospheric ozone are important for clarification atmospheric oxidizing capacity in China. As a result, the wide range, dynamic and temporal-spatial distribution of tropospheric ozone is detected based on total ozone and stratospheric ozone observations from OMI with higher temporal and spatial resolution as well as lidar (DIAL) with the capacity of boundary layer detection, respectively in this project. This joint method overcomes the issues of low sensitive of OMI to tropospheric ozone detection and effect of high load aerosol on measurement precision of remote sensing. The accurate retrieval method of total ozone column with OMI, including the convolution of absorption coefficient of ozone and instrument function, the retrieval methods of slant column density and vertical column density, as well as high precision detection and retrieval of stratospheric ozone with DIAL are researched in the project. The Research results will be not only conducive to identify temporal and spatial distribution of tropospheric ozone, its development tendency and to deal with the formation of complex air pollution, but also it provides a scientific support for national environmental security, making air pollution control policies by government and revealing the cause of complex air pollution.

对流层O3控制着大气氧化能力，是导致光化学烟雾的主要原因，对人体和生态系统具有危害作用。研究我国地区对流层O3时空分布、演变特征对阐明我国大气氧化性有重要意义。本项目拟采用具有高时空分辨率的OMI卫星传感器观测整层O3总量，结合具有边界层探测能力的地基激光雷达观测平流层臭氧，可实现大范围、动态对流层O3的时空分布探测，克服现有OMI卫星对对流层O3探测灵敏度低、以及高气溶胶对遥感监测精度的影响。开展基于OMI卫星的整层O3总量的准确反演方法（包括O3吸收系数与仪器函数的卷积方法、斜柱浓度反演方法和垂直柱浓度的反演方法研究）以及基于DIAL的平流层O3高精度探测及反演方法研究。研究结果对于揭示我国大气对流层臭氧的时空变化性特征、演变规律以及应对大气复合污染的形成具有重要的意义，同时也为国家的环境安全、政府制定大气污染治理政策、揭示大气复合污染成因提供科学支撑。

对流层O3控制着大气氧化能力，是导致光化学烟雾的主要原因，对人体和生态系统具有危害作用。研究我国地区对流层O3时空分布、演变特征对阐明我国大气氧化性有重要意义。本项目采用具有高时空分辨率的OMI卫星传感器观测整层O3总量，结合具有边界层探测能力的地基高分辨率傅里叶变换光谱技术(FTIR)观测平流层臭氧，实现了大动态范围对流层O3的时空分布探测，克服了现有OMI卫星对对流层O3探测灵敏度低、以及高气溶胶对遥感监测精度的影响。开展了基于OMI卫星的整层O3总量的准确反演方法（包括O3吸收系数与仪器函数的卷积方法、斜柱浓度反演方法和垂直柱浓度的反演方法研究）以及基于地基FTIR的平流层O3高精度探测及反演方法研究。研究结果对于揭示我国大气对流层臭氧的时空变化性特征、演变规律以及应对大气复合污染的形成具有重要的意义，同时也为国家的环境安全、政府制定大气污染治理政策、揭示大气复合污染成因提供科学支撑。