地域および影響に関連する気候目標に基づいて許容されるCO2排出量
Sonia I Seneviratne1, Markus G Donat2,3, Andy J Pitman2,3
1Institute for Atmospheric and Climate Science, Department of Environmental Systems Science, ETH Zurich, Switzerland.
Nature
|January 21, 2016
まとめ
地球温度の目標には 緊急性がないかもしれません 二酸化炭素 (CO2) 排出量を地域的な気候影響に変換することは,国家利益と気候変動対策にとってより説得力のあるアプローチを提供します.
科学分野:
- 気候科学
- 環境科学
背景:
- 工業化以前のレベルより2°C高い地球温度の目標には 効果的な二酸化炭素 (CO2) 排出量削減に必要な緊急性がないかもしれない.
- 現在の世界的な目標は 気候変動の局所的な影響を 十分に反映していないかもしれません
研究 の 目的:
- 世界的なCO2排出量を地域的な気候目標に変換する効果を調査する.
- 地域的な影響に関連する目標が国家利益とより良く調和し,気候変動対策の緊急性を高める方法を示す.
主な方法:
- 地球温暖化と地域気候変化のスケール関係に関する分析
- 極端な気温と降水量の地域的変化を主要指標として利用する.
- 異なるシナリオで,これらの地域的な変化が累積的なCO2排出量とどのように相関するかを検討する.
主要な成果:
- 極端な気温と降雨の地域的な変化は,地球温暖化と累積的なCO2排出量と強く相関しています.
- 陸上の地域的な極端な気温の変化は,地球平均気温の変化と比較して著しく増幅されています.
- このスケーリングは,排出量と具体的な地域的な影響の間の直接的なリンクを提供します.
結論:
- 世界的なCO2排出量を地域的な気候影響目標に変換することは,地球的な気温の値よりも効果的です.
- 地域特有の目標,特に極端な天候に焦点を当てたものは,気候変動の緊急性を国々により良く伝えることができます.
- このアプローチは,気候変動対策を国家の利益と調和させ,より強力な排出削減の取り組みを推進する可能性があります.
関連する概念動画
01:50Global Climate Change
29.7K
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.
29.7K
01:27Microbes and Climate Change
46
Microorganisms are pivotal agents in Earth's biogeochemical cycles, significantly influencing climate dynamics through their metabolic activities. These microbes modulate the levels of key greenhouse gases by both contributing to and helping mitigate climate change.Microbial Contributions to Greenhouse Gas EmissionsRising global temperatures accelerate microbial metabolism, which, in turn, speeds up the decomposition of organic matter. This process releases carbon dioxide (CO₂) through...
46
01:14The Carbon Cycle
45.5K
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
45.5K
01:16What is Climate?
21.4K
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.
21.4K
01:28Carbon-dioxide Fixation
862
Carbon dioxide fixation in prokaryotes enables the assimilation of inorganic carbon into organic molecules, supporting biosynthetic pathways, sustaining ecosystems, and contributing to the global carbon cycle. It also has industrial applications in carbon capture and bioproduct synthesis. Autotrophic organisms rely on this process to utilize CO₂ as a carbon source in diverse environments.The Calvin CycleThe Calvin cycle is the most widespread carbon fixation mechanism, primarily used by...
862
01:17Assessment of Diffusion and Perfusion
2.0K
Understanding and evaluating diffusion and perfusion is critical in assessing a patient's respiratory and circulatory health. These processes play key roles in maintaining the body's internal environment, ensuring that tissues receive adequate oxygen while waste products are efficiently removed.
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this...
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this...
2.0K