Abstract. We introduce the new GOME-2 daily and monthly level 3 product of total column ozone (O₃), total and tropospheric column nitrogen dioxide (NO₂), total column water vapour, total column bromine oxide (BrO), total column formaldehyde (HCHO) and total column sulphur dioxide (SO₂). The GOME-2 level 3 products are aimed to provide easily translatable and user-friendly data sets to the scientific community for scientific progress as well as satisfying public interest. The purpose of this paper is to present the theoretical basis as well as the verification and validation of the GOME-2 daily and monthly level 3 products. The GOME-2 level 3 products are produced using the overlapping area weighting method. Details of the gridding algorithm are presented. The spatial resolution of the GOME-2 level 3 products is selected based on sensitivity study. The consistency of the resulting level 3 products among three GOME-2 sensors is investigated through time series of global averages, zonal averages, and bias. The accuracy of the products is validated by comparing to ground-based observations. The verification and validation results show that the GOME-2 level 3 products are consistent with the level 2 data. Small discrepancies are found among three GOME-2 sensors, which are mainly caused by the differences in instrument characteristic and level 2 processor. The comparison of GOME-2 level 3 products to ground-based observations in general shows very good agreement, indicating the products are consistent and fulfil the requirements to serve the scientific community and general public.

中文翻译：

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Global Ozone Monitoring Experiment-2 (GOME-2) 大气微量气体柱的日月三级产品

摘要。我们介绍了新的国美2日和月3级产品总柱臭氧（O ₃）、总柱和对流层柱二氧化氮（NO ₂）、总柱水蒸气、总柱氧化溴（BrO）、总柱甲醛（ HCHO) 和总色谱柱二氧化硫 (SO ₂）。GOME-2 3 级产品旨在为科学界提供易于翻译和用户友好的数据集，以促进科学进步并满足公众利益。本文的目的是介绍国美2日、月3级产品的理论基础以及验证和验证。国美2三级产品采用重叠面积加权法生产。给出了网格化算法的细节。GOME-2 3级产品的空间分辨率是根据敏感性研究选择的。通过全球平均值、区域平均值和偏差的时间序列研究了三个 GOME-2 传感器之间生成的 3 级产品的一致性。产品的准确性通过与地面观测进行比较来验证。验证验证结果表明，国美2级3级产品与2级数据一致。三个GOME-2传感器之间存在小的差异，主要是由于仪器特性和二级处理器的差异造成的。国美二号三级产品与地面观测的对比总体上表现出很好的一致性，表明产品是一致的，满足了为科学界和公众服务的要求。