Teaser of the Copernicus Atmosphere Monitoring Service Regional Europe Temporal profiles version 2.1 (CAMS-REG-TEMPOv2.1, https://doi.org/10.24380/1cx4-zy68). The collection includes monthly temporal factors for gasoline road transport CO emissions (2015), daily temporal factor for NH3 livestock emissions (2015) and weekly and hourly (weekdays) temporal factors for road transport emissions. The files are available in NetCDF4 compressed format at 0.1×0.05 degree resolution. For each grid cell and profile, the sum of all weight factors is equal to 12 for monthly profiles, 7 for weekly profiles, 365 for daily profiles and 24 for hourly profiles. Additional data details are provided in the README.txt file.