The number of studies focused on CH4 emissions from landfills surged towards the end of the review period . Notably, all recently published landfill-focused studies in the review used aircraft or satellite platforms to measure point-source plumes emitted from the landfill surface or associated infrastructure or to quantify total landfill emissions . Several landfills were observed with different measurement methods at different points in time across the studies. We noted that six U.S. landfills were most frequently observed between studies. Thus, we extracted emissions data from eight studies that measured CH4 emissions from these landfills with TD methods to compare rates (Figure ) and identify patterns for future research. Additional details on the data extraction and preparation for Figure are in S1.