中文摘要：

为了满足卫星遥感产品地基验证平台中不同仪器观测数据一致性的要求，2011年9月，将3台不同设计方案、不同操作方式的多轴差分吸收光谱仪（MAX-DOAS）集中在中国科学院大气物理研究所香河大气探测综合试验站，进行了近20天的同步观测测试．并对所有仪器统一观测方位角，分别采用相同的紫外、可见光波段的特征吸收带及吸收截面进行NO2柱浓度的反演试验．系统的比对分析表明：3台MAX-DOAS的反演误差大都保持在6％以内，说明仪器性能良好，比较稳定；紫外波段的反演结果略小于可见光波段，尤其在阴天，这是由于两波段对分子及气溶胶散射的敏感性不同造成的；以可见光波段的反演结果为标准，对紫外波段的反演结果进行系统订正，订正后的各组数据一致性非常好，满足卫星大气成分NO2柱浓度遥感产品不同地基验证站点数据稳定、一致的要求．

英文摘要：

In September 2011, we used 3 ground-based multi-axis differential optical absorption spectroscopy （MAX-DOAS） instruments of different designs and operation protocols to measure tropospheric NO2 for about 20 days, at the Station of Atmospheric Comprehen- sive Observatory, Institute of Atmospheric Physics, Chinese Academy of Sciences （Xianghe 117.0°N, 39.77°E）. All instruments are oriented to an azimuth angle of 270° （north）, in a common wavelength range and with a set of cross sections for the inversion of NO2 slant column in visible and UV wavelength range respectively. Intercomparison of NO2 slant columns among three MAX-DOAS is introduced. The results obtained from the different instruments are in good accordance with each other, and the correlation coefficients are all higher than 0.95, but systematical errors exist. Daily average errors of three MAX-DOAS instruments are almost below 6%, showing that the instruments work steadily and the data are cogent. The UV results are smaller than those in the visible range, espe- cially on the overcast days, related to the wavelength dependence of Rayleigh and Mie scattering. After the correction of systematical errors, there is better consistency among different results, which indicates that the three MAX-DOAS instruments have a capability to validate the atmospheric component products of satellite.