Analysis of the Impact of Temperature Changes on Water Vapor in the Air
School of Thermal Engineering, Shandong Jianzhu University, Jinan 250101, China
| Abstract: | Water vapor, as the most abundant greenhouse gas, has a significant impact on global warming. In the current literature on global warming, it is widely cited that 'for every 1°C increase in temperature, the air can accommodate an additional 7% of water vapor'. This article analyzes the changes in relative humidity and moisture content of air when the temperature rises by 1°C using an enthalpy humidity chart, and verifies this data. The results show that this conclusion can only be established at certain specific intersections of temperature and relative humidity/moisture content. When the moisture content remains constant, for every 1°C increase in temperature, the higher the basic air temperature, the smaller the decrease in relative humidity difference; When the relative humidity remains constant, for every 1°C increase in temperature, the higher the basic air temperature, the greater the difference in moisture content. At the same basic temperature, for every 1°C increase, the relative humidity difference that the air can accommodate increases as the humidity content increases. As the relative humidity increases, the difference in humidity that the air can accommodate increases. That is to say when the temperature rises by 1°C, the air in low latitude and humid areas can absorb and hold more water vapor. Under the influence of global warming, the water vapor content in the air also increases as the temperature increases; Even cities with "heat island effect" and "dry island effect" not only have stronger moisture absorption capacity, but also have higher water vapor content. |
| Keywords: | Water Vapor; Global Warming; Relative Humidity; Moisture Content; Enthalpy Hygrogram |
| DOI: | 10.57237/j.jsts.2023.01.001 |
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Received: 21 June 2023
Accepted: 22 August 2023
Published Online: 29 August 2023
Funding
| 1. | 山东省科技型中小企业创新能力提升工程项目 (2022TSGC2566) |
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