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Version 2 of the global catalogue of large anthropogenic and volcanic SO2 sources and emissions derived from satellite measurements
Earth System Science Data ( IF 11.4 ) Pub Date : 2022-09-06 , DOI: 10.5194/essd-2022-281
Vitali Fioletov, Chris A. McLinden, Debora Griffin, Ihab Abboud, Nickolay Krotkov, Peter J. T. Leonard, Can Li, Joanna Joiner, Nicolas Theys, Simon Carn

Abstract. Sulfur dioxide (SO2) measurements from the Ozone Monitoring Instrument (OMI), Ozone Mapping and Profiler Suite (OMPS), and TROPOspheric Monitoring Instrument (TROPOMI) satellite spectrometers were used to update and extend the previously developed global catalogue of large SO2 emission sources. This version 2 of the global catalogue covers the period of 2005–2021 and includes a total of 759 continuously emitting point sources releasing from about 10 kt yr-1 to more than 4000 kt yr-1 of SO2 that have been identified and grouped by country and primary source origin: volcanoes (106 sources); power plants (477); smelters (74); and sources related to the oil and gas industry (102). There are several major improvements compared to the original catalogue: it combines emissions estimates from three satellite instruments instead of just OMI, uses a new version 2 of the OMI and OMPS SO2 dataset, and updated consistent site-specific air mass factors (AMF) are used to calculate SO2 vertical column densities (VCDs). The newest TROPOMI SO2 data processed with the Covariance-Based Retrieval Algorithm (COBRA), used in the catalogue, can detect sources with emissions as low as 8 kt yr-1 (in 2018–2021) compared to the 30 kt yr-1 limit for OMI. In general, there is an overall agreement within ±12 % in total emissions estimated from the three satellite instruments for large regions. For individual emission sources, the spread is larger: the annual emissions estimated from OMI and TROPOMI agree within ±13 % in 50 % of cases and within ±28 % in 90 % of cases. The version 2 catalogue emissions were calculated as a weighted average of emission estimates from the three satellite instruments using an inverse-variance weighting method. OMI, OMPS, and TROPOMI data contribute 7 %, 5 %, and 88 % to the average respectively for small (< 30 kt y-1) sources and 33 %, 20 %, and 47 % respectively for large (> 300 kt y-1) sources. The catalogue data show an approximate 50 % decline in global SO2 emissions between 2005 and 2021, although emissions were relatively stable during the last 3 years. The version 2 of the global catalogue has been posted at the NASA Global SO2 Monitoring web site (Fioletov et al., 2022).

中文翻译:

来自卫星测量的大型人为和火山二氧化硫源和排放全球目录第 2 版

摘要。来自臭氧监测仪器 (OMI)、臭氧测绘和剖面仪套件 (OMPS) 和对流层监测仪器 (TROPOMI) 卫星光谱仪的二氧化硫 (SO 2 ) 测量值用于更新和扩展先前开发的大型 SO 2排放全球目录来源。该全球目录第 2 版涵盖 2005-2021 年期间,包括总共 759 个连续排放点源,从约 10 kt yr -1释放到超过 4000 kt yr -1 SO 2已按国家和主要来源来源确定和分组:火山(106 个来源);发电厂(477);冶炼厂 (74);以及与石油和天然气行业相关的来源 (102)。与原始目录相比,有几项重大改进:它结合了来自三个卫星仪器的排放估算,而不仅仅是 OMI,使用新版本 2 的 OMI 和 OMPS SO 2数据集,并更新了一致的特定场地空气质量因子 (AMF)用于计算 SO 2垂直柱密度 (VCD)。使用目录中使用的基于协方差的检索算法 (COBRA) 处理的最新 TROPOMI SO 2数据可以检测到排放量低至 8 kt yr -1(2018-2021 年)的源,而 30 kt yrOMI 的-1限制。一般来说,大区域的三个卫星仪器估计的总排放量的总体一致性在 ±12% 以内。对于单个排放源,差异更大:根据 OMI 和 TROPOMI 估算的年排放量在 50% 的情况下在 ±13% 范围内一致,在 90% 的情况下在 ±28% 范围内一致。第 2 版目录排放量是使用逆方差加权法计算的三个卫星仪器排放量估计值的加权平均值。OMI、OMPS 和 TROPOMI 数据对小型(< 30 kt y -1 )源的平均贡献率分别为 7 %、5 % 和 88 %,对于大型(> 300 kt y -1 )源分别占 33 %、20 % 和 47 % -1 ) 来源。目录数据显示全球 SO 2下降约 50%2005 年至 2021 年的排放量,尽管在过去 3 年排放量相对稳定。全球目录的第 2 版已发布在 NASA 全球 SO 2监测网站上(Fioletov 等人,2022 年)。
更新日期:2022-09-06
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