相关实验视频
Updated: Jun 18, 2025

06:10
Using Generative Art to Convey Past and Future Climate Transitions
Published on: March 31, 2023
918
预计平流层温度对严格的气候减缓措施的快速反应
Grasiele Romanzini-Bezerra1, Amanda C Maycock2
1School of Earth and Environment, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.
Nature communications
|August 3, 2024
概括
平流层冷却趋势可以为缓解气候变化的有效性提供早期证据. 快速减少的排放表明在五年内可检测到的平流层变化,为气候行动提供了明确的信号.
科学领域:
- 气候科学 气候科学
- 大气科学 大气科学
- 环境科学 环境科学
背景情况:
- 实现2015年"巴黎协定"要求大幅,迅速地减少温室气体排放.
- 对政策制定者和公众来说,评估气候缓解努力对气候系统的影响至关重要.
- 全球表面温度的变化可能会掩盖缓解气候变化的早期迹象.
研究的目的:
- 为了调查近期的地球表面和平流层的全球温度趋势.
- 确定平流层温度趋势是否可以作为缓解气候变化的早期指标.
- 为了在不同的未来排放场景下比较温度趋势.
主要方法:
- 利用大型气候模型来预测温度趋势.
- 分析了表面和平流层温度的预测趋势.
- 与当前的气候承诺 (SSP2-4.5) 相比,代表快速减排的情景 (SSP1-1.9) 与当前的气候承诺 (SSP2-4.5) 进行了比较.
主要成果:
- 模拟的中层和上层平流层冷却趋势显示,在快速,深度减排下 (SSP1-1.9) 在5年内可检测到的减弱.
- 与一个代表当前气候承诺的情景 (SSP2-4.5) 相比,观察到这种可检测的减弱.
- 表面温度趋势表现出显著的内部变化,这使得在短期内对缓解的归因具有挑战性.
结论:
- 平流层温度趋势提供了更高的信号噪声比,并可以提供早期气候减缓效应的迹象.
- 平流层冷却趋势可以作为政策制定者和公众的强有力的早期指标,表明气候缓解是有效的.
- 这一发现突显了监测平流层变化的潜力,以评估脱碳努力的影响.
相关概念视频
Global Climate Change
24.3K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
24.3K
Responses to Heat and Cold Stress
13.4K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.4K
What is Climate?
18.4K
Climate refers to the prevailing weather conditions in a specific area over an extended period. As the saying goes, “Climate is what you expect. Weather is what you get.” Climate is influenced by geographic factors, such as latitude, terrain, and proximity to bodies of water.
18.4K
Temperature Dependence on Reaction Rate
81.4K
The Collision Theory
Atoms, molecules, or ions must collide before they can react with each other. Atoms must be close together to form chemical bonds. This premise is the basis for a theory that explains many observations regarding chemical kinetics, including factors affecting reaction rates.
The collision theory is based on the postulates that (i) the reaction rate is proportional to the rate of reactant collisions, (ii) the reacting species collide in an orientation allowing contact between...
Atoms, molecules, or ions must collide before they can react with each other. Atoms must be close together to form chemical bonds. This premise is the basis for a theory that explains many observations regarding chemical kinetics, including factors affecting reaction rates.
The collision theory is based on the postulates that (i) the reaction rate is proportional to the rate of reactant collisions, (ii) the reacting species collide in an orientation allowing contact between...
81.4K
Radiation: Applications
1.1K
The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
The average...
The average...
1.1K
Hess's Law
44.9K
There are two ways to determine the amount of heat involved in a chemical change: measure it experimentally, or calculate it from other experimentally determined enthalpy changes. Some reactions are difficult, if not impossible, to investigate and make accurate measurements for experimentally. And even when a reaction is not hard to perform or measure, it is convenient to be able to determine the heat involved in a reaction without having to perform an experiment.
44.9K

