Print Email Facebook Twitter Advancing the Use of Methane Emission Quantification Using TROPOMI Data Title Advancing the Use of Methane Emission Quantification Using TROPOMI Data Author van Diepen, Simon (TU Delft Aerospace Engineering) Degree granting institution Delft University of Technology Programme Aerospace Engineering Date 2020-07-07 Abstract Methane is the second-strongest anthropogenic greenhouse gas, whose concentrations have more than doubled since pre-industrial times. Due to its short atmospheric lifetime, it is promising for climate change mitigation. This thesis focuses on estimating methane emissions from time-averaged satellite-measured concentration maps. The current method to do that systematically underestimates emission rates by 40%, and has an error estimate larger than 100% for most sources. I developed a new mass-balance method to reduce these errors, taking into account emissions moving from the source region into the surroundings. Its performance was tested using a year-long atmospheric transport model run over the United States. The new method has a lower emission underestimation of only 14-19%, while the errors are reduced by 60-70% compared to the old method. Direct application of the new method on TROPOMI data over two known large emission regions gives emission rates consistent with recent literature. Subject methaneemissionQuantificationTROPOMI To reference this document use: http://resolver.tudelft.nl/uuid:40948a34-3abe-44fd-a25b-3390c77075b1 Part of collection Student theses Document type master thesis Rights © 2020 Simon van Diepen Files PDF Thesis_placeholder_v2.pdf 1.05 MB Close viewer /islandora/object/uuid:40948a34-3abe-44fd-a25b-3390c77075b1/datastream/OBJ/view