A scientific total ozone column product from Ozone Mapping and Profiler Suite Nadir Mapper (OMPS-NM) observations and the retrieval algorithm are presented. The retrieval employs the weighting function fitting approach (WFFA), a modification of the weighting function differential optical absorption spectroscopy (WFDOAS) technique. The total ozone columns retrieved with WFFA are in very good agreement with other datasets. A mean difference of 0.3 % with respect to ground-based Brewer and Dobson measurements is observed. Seasonal and latitudinal variations are well represented and in agreement with other satellite datasets. The comparison of our product with the operational product of OMPS-NM indicates a mean bias of around zero. The comparison with the Tropospheric Monitoring Instrument products (S5P/TROPOMI) OFFL and WFDOAS shows a persistent negative bias of about −0.6 % for OFFL and −2.5 % for WFDOAS. Larger differences are only observed in the polar regions. This data product is intended to be used for trend analysis and the retrieval of tropospheric ozone combined with the OMPS limb profiler data.

中文翻译：

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使用宽带加权函数拟合方法 (WFFA) 的臭氧映射和 Profiler Suite Nadir Mapper (OMPS-NM) 测量的总臭氧柱

介绍了来自臭氧测绘和 Profiler Suite Nadir Mapper (OMPS-NM) 观测的科学总臭氧柱产品和检索算法。检索采用加权函数拟合方法 (WFFA)，这是加权函数差分光学吸收光谱 (WFDOAS) 技术的改进。使用 WFFA 检索的总臭氧柱与其他数据集非常一致。观察到与基于地面的 Brewer 和 Dobson 测量值的平均差异为 0.3%。季节性和纬度变化得到了很好的体现，并与其他卫星数据集一致。我们的产品与 OMPS-NM 的操作产品的比较表明平均偏差大约为零。- OFFL 为 0.6 % ，WFDOAS为- 2.5 %。较大的差异仅在极地地区观察到。该数据产品旨在结合 OMPS 临边廓线仪数据用于趋势分析和对流层臭氧的检索。