Effects of Plant Decomposition and Soil Respiration on CO2 in the Atmosphere via Global Temperature Changes

A good correlation was found between the CO 2 growth rate (ppm/year) and satellite-based global temperature, as shown in Figure 1 (see Introduction) in our recent paper. Then, the following equation was reasonably derived: drco 2 / dt ≒ γ ΔT ( rco 2 CO 2 concentration, γ constant, ΔT temperature change) It was confirmed that the CO 2 growth rate follows temperature changes with a time lag. This essential equation casts strong doubts that anthropogenic CO 2 is the cause of global warming, although the concept of global warming due to anthropogenic CO 2 has been proposed by the IPCC. Our previous papers suggested that temperature changes affect plant decomposition and soil respiration, followed by a change in CO 2 generation. The higher the temperature is, the more CO 2 is generated. In this paper, the effects of plant decomposition and soil respiration on CO 2 in the atmosphere are further clarified for global temperature changes by reviewing related aspects and available datasets. The results included (1) the carbon budget, (2) the comparison of exhaust gas and CO 2 growth rates, (3) greenhouse gas compositions, (4) the solar energy budget, (5) changes in carbon isotopes, (6) latitude-related changes in CO 2 and temperature, and (7) seasonal changes in exhaust gas compositions. Based on all these results, we concluded that changes in plant decomposition and soil respiration due to global temperatures control the global CO 2 cycles. The impact of CO 2 emissions from fossil fuel combustion on global warming is extremely low.