Intercomparison of Metop-A SO2 measure- ments during the 2010- 2011 Icelandic eruptions
Intercomparison of Metop-A SO2 measure- ments during the 2010- 2011 Icelandic eruptions
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2010-2011 年冰岛火山喷发期间 Metop-A SO2 测量值的比对
DOI：
10.4401/ag-6613
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发表时间：
2015
影响因子：
1
通讯作者：
C. Zehner
中科院分区：
文献类型：
--
作者：
M. Koukouli;L. Clarisse;E. Carboni;J. Gent;C. Spinetti;D. Balis;S. Dimopoulos;D. Grainger;N. Theys;L. Tampellini;C. Zehner
欧洲航天局项目“火山灰和二氧化硫卫星监测以减轻航空危害”于 2010 年春季冰岛埃亚菲亚德拉火山喷发后启动，旨在促进开发用于火山灰羽流监测和预测的最佳端到端系统。埃亚菲亚德拉杰·库尔羽流飘向欧洲，造成欧洲空中交通严重中断数周，影响数百万人的日常生活。由于火山羽流监测和预测能力的局限性，催生了这一观测系统，该系统基于卫星对火山灰羽流和二氧化硫 [SO 2 ] 水平的综合估计，以及使用补充卫星、飞机和地面测量进行的广泛验证。显示了 GOME2/MetopA 和 IASI/MetopA 观测到的火山总 SO 2 柱和羽流高度在 2010 年 Eyjaf jallaj o kull 喷发以及 2011 年 Gr i msv o tn 喷发之前、期间和之后的相互比较。从荷兰德比尔特世界臭氧和紫外线辐射数据中心提取的同地地面布鲁尔分光光度计数据也与不同的卫星估计值进行了比较。两种不同类型的 SO 2 色谱柱仪器的线性回归系数在比较不同仪器时的 0.64 左右和在比较两种不同的 IASI 算法时的 0.85 之间找到了良好的一致性。羽流高度的一致性较低，可能是由于 GOME2 和 IASI 算法的高度检索部分之间存在重大差异。与荷兰德比尔特的布鲁尔地面站的比较表明，事件高峰期的质量一致，但需要更强的喷发信号才能进行更长时间的定量比较。
The European Space Agency project Satellite Monitoring of Ash and Sulphur Dioxide for the mitigation of Avi ation Hazards, was introduced after the eruption of the Icelandic volcano Eyjafjallaj o kull in the spring of 2010 to facilitate the development of an optimal EndtoEnd System for Volcanic Ash Plume Monitoring and Predic tion. The Eyjafjallaj o kull plume drifted towards Europe and caused major disruptions of European air traffic for several weeks affecting the everyday life of millions of people. The limitations in volcanic plume monitoring and prediction capabilities gave birth to this observational system which is based on comprehensive satellitederived ash plume and sulphur dioxide [SO 2 ] level estimates, as well as a widespread validation using supplementary satellite, aircraft and groundbased measurements. Intercomparison of the volcanic total SO 2 column and plume height observed by GOME2/MetopA and IASI/MetopA are shown before, during and after the Eyjaf jallaj o kull 2010 eruptions as well as for the 2011 Gr i msv o tn eruption. Colocated groundbased Brewer Spectro photometer data extracted from the World Ozone and Ultraviolet Radiation Data Centre for de Bilt, the Nether lands, are also compared to the different satellite estimates. Promising agreement is found for the two different types of instrument for the SO 2 columns with linear regression coefficients ranging around from 0.64 when comparing the different instruments and 0.85 when comparing the two different IASI algorithms. The agree ment for the plume height is lower, possibly due to the major differences between the height retrieval part of the GOME2 and IASI algorithms. The comparisons with the Brewer groundbased station in de Bilt, The Nether lands show good qualitative agreement for the peak of the event however stronger eruptive signals are required for a longer quantitative comparison.