This paper presents a new compilation of tropospheric ¹⁴CO₂ data for the period 1950–2010, based on published radiocarbon data from atmospheric CO₂ sampling and tree-ring series. The compilation includes yearly summer data sets for zonal, hemispheric, and global levels of atmospheric ¹⁴C, as well as extended monthly data sets for five atmospheric zones (three in the Northern Hemisphere and two in the Southern Hemisphere). The annual data sets are used for regional and global carbon model calculations, while the monthly data sets serve as calibration curves for ¹⁴C dating of recent, short-lived terrestrial organic materials. The study shows that atmospheric ¹⁴C levels increased significantly in the mid-1960s due to bomb testing, reaching a peak in the Northern Hemisphere. After the mid-1960s, atmospheric ¹⁴C levels decreased due to the absence of major nuclear explosions and increased exchange between the atmosphere, oceans, and biosphere. Fossil fuel combustion also contributed to the decrease in atmospheric ¹⁴C, especially after the late 1980s. The study also highlights the spatial distribution of bomb ¹⁴C during the early bomb period, showing a large gradient in the troposphere between the Northern and Southern Hemispheres. The data reveal that the Northern Hemisphere had three zones, while the Southern Hemisphere had one zone. However, the study suggests that the Southern Hemisphere should be divided into two zones, separated by the mean winter position of the Intertropical Convergence Zone (ITCZ). The data sets used for the compilation include atmospheric samples and tree-ring data from various locations, including clean-air sites such as Point Barrow, Hawaii, Cape Matatula, and the South Pole. The study also includes data from tree rings in various regions, including Germany, Poland, Japan, Korea, Thailand, and Australia. The study provides a comprehensive compilation of atmospheric ¹⁴C data for the last 60 years, including summer and monthly data sets. The data are used for carbon cycle studies and dating of recent, short-lived terrestrial organic materials. The extended monthly data sets are used in the CALIBomb and OxCal software packages for age calibration. The study also compares the new data with those of Hua and Barbetti (2004), showing that the new data extend the pre-bomb period by five years and the post-bomb period by about ten years. The new data also include more detailed information on the spatial distribution of bomb ¹⁴C in the Southern Hemisphere.This paper presents a new compilation of tropospheric ¹⁴CO₂ data for the period 1950–2010, based on published radiocarbon data from atmospheric CO₂ sampling and tree-ring series. The compilation includes yearly summer data sets for zonal, hemispheric, and global levels of atmospheric ¹⁴C, as well as extended monthly data sets for five atmospheric zones (three in the Northern Hemisphere and two in the Southern Hemisphere). The annual data sets are used for regional and global carbon model calculations, while the monthly data sets serve as calibration curves for ¹⁴C dating of recent, short-lived terrestrial organic materials. The study shows that atmospheric ¹⁴C levels increased significantly in the mid-1960s due to bomb testing, reaching a peak in the Northern Hemisphere. After the mid-1960s, atmospheric ¹⁴C levels decreased due to the absence of major nuclear explosions and increased exchange between the atmosphere, oceans, and biosphere. Fossil fuel combustion also contributed to the decrease in atmospheric ¹⁴C, especially after the late 1980s. The study also highlights the spatial distribution of bomb ¹⁴C during the early bomb period, showing a large gradient in the troposphere between the Northern and Southern Hemispheres. The data reveal that the Northern Hemisphere had three zones, while the Southern Hemisphere had one zone. However, the study suggests that the Southern Hemisphere should be divided into two zones, separated by the mean winter position of the Intertropical Convergence Zone (ITCZ). The data sets used for the compilation include atmospheric samples and tree-ring data from various locations, including clean-air sites such as Point Barrow, Hawaii, Cape Matatula, and the South Pole. The study also includes data from tree rings in various regions, including Germany, Poland, Japan, Korea, Thailand, and Australia. The study provides a comprehensive compilation of atmospheric ¹⁴C data for the last 60 years, including summer and monthly data sets. The data are used for carbon cycle studies and dating of recent, short-lived terrestrial organic materials. The extended monthly data sets are used in the CALIBomb and OxCal software packages for age calibration. The study also compares the new data with those of Hua and Barbetti (2004), showing that the new data extend the pre-bomb period by five years and the post-bomb period by about ten years. The new data also include more detailed information on the spatial distribution of bomb ¹⁴C in the Southern Hemisphere.