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arXiv 2004.00708physics.ao-ph
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大气中二氧化碳红外吸收的饱和

Saturation of the Infrared Absorption by Carbon Dioxide in the Atmosphere

Dieter Schildknecht

摘要:

基于新的辐射传输数值计算,我们重新考虑了Schack在1972年提出的一个论点,即当大气中二氧化碳的相对浓度超过约300 ppm的下限时,大气中二氧化碳对红外辐射的吸收就会饱和。我们提供了一个简明扼要和明确的表示地球大气的温室效应。我们发现一个平衡的气候敏感性(温度增加$ΔT$由于大气$CO_2$浓度加倍)的$ΔT \simeq 0.5 ^0C$。我们阐述了这些结果的一致性$ΔT$与观测获得的结果基于卫星的测量短时间辐射通量与表面温度的变化。

英文摘要:

Based on new radiative transfer numerical evaluations, we reconsider an argument presented by Schack in 1972 that says that saturation of the absorption of infrared radiation by carbon dioxide in the atmosphere sets in as soon as the relative concentration of carbon dioxide exceeds a lower limit of approximately 300 ppm. We provide a concise brief and explicit representation of the greenhouse effect of the earth's atmosphere. We find an equilibrium climate sensitivity (temperature increase $ΔT$ due to doubling of atmospheric $CO_2$ concentration) of $ΔT \simeq 0.5 ^0C$. We elaborate on the consistency of these results on $ΔT$ with results observationally obtained by satellite-based measurements of short-time radiation-flux versus surface-temperature changes.

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