1. Global Monitoring of Volcanic SO2 Degassing Using Sentinel-5 Precursor TROPOMI
- Author
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Benoît Smets, Nicolas Theys, Huan Yu, Hugues Brenot, N. D'Orcyc, C. Lcrot, Pascal Hedelt, Jonas Vlietinck, Julien Barrière, I. De Smedt, Diego Loyola, Adrien Oth, François Kervyn, M. Van Roozendael, Geography, and Cartography and Geographical Information Science
- Subjects
geography ,S5P ,geography.geographical_feature_category ,Pixel ,Monitoring ,Lava ,satellite ,SO2 ,Large range ,TROPOMI ,Induced seismicity ,volcanic emissions ,Volcano ,Environmental science ,sulfur dioxide ,Satellite ,Volcanoes ,Time series ,time series ,Remote sensing - Abstract
We present here the TROPOMI SO 2 product, which is publicly available since April 2018. We describe the capabilities and limitations of the product for the monitoring of volcanic SO 2 degassing. With several examples, we illustrate the benefit of a small satellite pixel of 3.5 x 5.5 km2. Owing to its improved detection limit, the data can be used to generate time series of SO 2 mass over number of volcanoes, with a large range of SO 2 emissions. We use Nyiragongo as a show case and correlate the SO 2 mass data with lava lake level estimates and local measurements of the seismicity. This paper also presents on-going developments to further improve the performance of the product for weak SO 2 loadings using a new algorithm, COBRA.
- Published
- 2021
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