Will fires have an impact on atmospheric carbon dioxide concentrations? The answer is: Yes. Recently, Shi Yusheng, the research team of the National Engineering Research Center for Remote Sensing Satellite Applications of the Institute of Aerospace Information Innovation, Chinese Academy of Sciences, found that the annual average impact of global fire carbon emissions on atmospheric carbon dioxide concentration can reach 2.4 parts per million (ppm), indicating that fire is one of the key factors causing the increase of global atmospheric carbon dioxide concentration, and has a significant impact on global warming and climate change. The related paper was published online on the 15th in the journal of environmental science and ecology, "Overall Environmental Science.". Fire carbon emissions are characterized by periodicity, randomness, multiple point sources, wide range, and difficulty in monitoring. They exhibit strong spatiotemporal heterogeneity, and have a significant impact on the spatiotemporal distribution and dynamic change of global carbon dioxide. Quantifying the impact of fire carbon emissions on atmospheric carbon dioxide concentration is the basis for clarifying the carbon cycle in terrestrial ecosystems, and is also a prerequisite for clarifying the global and regional scale carbon budget balance. Shi Yusheng introduced that the research team quantified the impact of global fire carbon emissions on atmospheric carbon dioxide concentration through atmospheric transmission model simulation, combined with ground-based observation and satellite data validation, providing effective methods and technical support for accurate verification of the fire carbon emissions inventory. "In addition to the quantitative results, we also found that there is a significant seasonal variation in the impact of global fire carbon emissions on atmospheric carbon dioxide concentration. For example, Africa is the region with the highest biomass combustion emissions in the world, resulting in a maximum increase in carbon dioxide concentration of 7.9 to 13.0 parts per million (ppm) in summer." Shi Yusheng introduced that the model evaluation results show that, The simulation performance using the Quick Fire Emissions Database (QFED) as a model priori fire carbon emissions inventory is the best, with minimal differences from satellite and ground observations. At the same time, the research results also show that in southern South America and most regions of Eurasia, the sensitivity of simulated carbon dioxide concentrations to fire carbon emissions inventories is higher, while in central Africa and Southeast Asia, the sensitivity is lower. Some commentators believe that this research provides new ways and methods for finely quantifying the impact of fire carbon emissions on atmospheric carbon dioxide concentration changes, provides scientific basis for biomass combustion control, and has a guiding role in the implementation of environmental policies such as ecological environment governance and coordinated emission reduction and carbon reduction, which is conducive to more targeted promotion of greenhouse gas emission reduction in China and better realization of the dual carbon goal. (Outlook New Era Network)