Figure 8
From: Evaluating methane inventories by isotopic analysis in the London region
Map of the London borough of Hounslow (a) 2013 NAEI emission inventories (b) isotopic values calculated from 2013 emission inventories (c) values of mole fraction excess relative to the methane baseline in ppb, using measurements from four mobile surveys. The map was generated using ArcMap 10.2. Base map source: Sources: Esri, HERE, DeLorme, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hon Kong), swisstopo, MapmyIndia, OpenStreetMap contributors, and the GIS User Community.
