观察到的表面湿度变化归因于人类的影响
Katharine M Willett1, Nathan P Gillett, Philip D Jones
1Climatic Research Unit, School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK.
Nature
|October 12, 2007
概括
人类活动正在增加大气中的水蒸气,这是一个关键的温室气体. 全球范围内观察到的特定湿度的上升与温度上升有关,并对气候产生重大影响.
科学领域:
- 大气科学 大气科学
- 气候科学是气候科学.
- 地球科学 地球科学
背景情况:
- 水蒸气是主要的天然温室气体.
- 大气中的水蒸气预计将随着全球变暖而增加.
- 这种增加作为对人为气候变化的反机制.
研究的目的:
- 为了识别和调查20世纪后期表面特定湿度变化的原因.
- 将观察到的特定湿度变化归因于自然或人类的影响.
主要方法:
- 利用了一种新的质量控制和均质化的网格观测数据集,用于表面湿度.
- 用于比较分析的结合气候模型的就业输出.
- 分析了20世纪末表面特定湿度的变化.
主要成果:
- 确定了全球范围内表面特定湿度的显著增加.
- 观察到的特定湿度的增加主要归因于人类的影响.
- 具体湿度因温度升高而上升,相对湿度保持不变.
结论:
- 人类活动是表面特定湿度增加的主要驱动因素.
- 这些发现强调了水蒸气对人为气候变化的重大反.
- 湿度的变化对降水,热带气旋,热应激和生物圈都有关键影响.
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