Effects of Anthropogenic CO₂ and Thermally-Induced CO₂ on Global Warming

Changes in CO₂ and temperature are correlated, but it is difficult to observe which is the cause and which is the effect. The release of CO₂ dissolved in the ocean into the atmosphere depends on the atmospheric temperature. However, examining the relationship between changes in CO₂ caused by other phenomena and temperature is difficult. Studies of soil respiration (Rs) since the late 20th century have shown that CO₂ emissions from soil respiration (Rs) are overwhelmingly greater than CO₂ emissions from fossil fuel combustion. This is also noted in the IPCC carbon budget assessment. In this paper, the dependences of Rs on temperature, time, latitude, precipitation, seasons, etc., were investigated using the latest NASA database. The changes in temperature and Rs correlated well. There is also a good correlation between Rs and CO₂ generation. Therefore, an increase in temperature results in an increase in CO₂. On the other hand, there is no evidence other than model calculations that an increase in anthropogenic CO₂ is mainly linked to a rise in temperature. The idea that global warming is caused by anthropogenic CO₂ production is still a hypothesis. For these reasons, the relationship between global warming and anthropogenic CO₂ should be reconsidered based on physical evidence without preconceptions.