Stratospheric Ozone Loss in Mid-latitudes in Summer - a Potential Risk of Climate Engineering? (CE-O3)
夏季中纬度地区平流层臭氧损失——气候工程的潜在风险?
基本信息
- 批准号:311104185
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Priority Programmes
- 财政年份:2016
- 资助国家:德国
- 起止时间:2015-12-31 至 2019-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Recently, a new mechanism for ozone loss over populated areas is discussed in the scientific community warning of an increasing risk of ozone depletion in summer from convectively injected water vapour into the mid-latitude lower stratosphere. In this region, enhanced water vapour can yield chlorine-induced catalytic ozone loss caused by heterogeneous reactions on binary sulphate-water aerosol (H2SO4/H2O) sped up by increasing water vapour and low temperatures. Assuming that the intensity and frequency of convectively injected water vapour would increase in the next decades caused by anthropogenic climate change, a related increase in levels of ultraviolet radiation (UV) on Earth's surface over populated areas would follow. However, the details of this new ozone loss mechanism are not yet clear preventing an accurate quantification of the resulting ozone loss and its sensitivity on lower stratospheric sulphur and water vapour. Moreover, the injection of sulphate aerosol into the stratosphere proposed as one method of climate engineering to mitigate global warming could in addition intensify ozone loss in the mid-latitude lower stratosphere. Motivated by the lack of current understanding of ozone loss processes under conditions of enhanced water vapour and sulphate aerosol in the mid-latitude lower summer stratosphere, we propose a project in the frame of the DFG Priority Program `Climate Engineering' based on different simulations with the three-dimensional chemistry transport model (CLaMS). Our objectives are to understand and quantify the details of this new ozone loss mechanism and to simulate reliably possible ozone loss under climate engineering conditions. An algorithm linking the dependency of mid-latitude ozone loss on increased stratospheric sulphate will be provided to the climate engineering community as basis for further economic analysis. Our findings will help possible future decisions about climate engineering to be assessed in order to maximize global welfare and minimize costs for the society.
最近,科学界讨论了人口稠密地区上空臭氧损耗的一种新机制,并警告说,由于对流注入中纬度平流层下部的水蒸气,夏季臭氧消耗的风险越来越大。在该区域,增加的水蒸气可产生氯诱导的催化臭氧损失,这是由于水蒸气增加和低温加速了二元硫酸盐-水气溶胶(H2SO 4/H2O)的非均相反应造成的。假设在今后几十年中,由于人为气候变化,对流注入的水蒸气的强度和频率会增加,那么地球表面人口稠密地区的紫外线辐射水平也会相应增加。然而,这一新的臭氧损失机制的细节尚不清楚,无法准确量化由此造成的臭氧损失及其对平流层下层硫和水蒸气的敏感性。此外,将硫酸盐气溶胶注入平流层,作为减缓全球变暖的气候工程方法之一,可能会加剧中纬度平流层下部的臭氧损失。由于目前缺乏对中纬度夏季平流层下部水蒸气和硫酸盐气溶胶增强条件下臭氧损失过程的了解,我们在DFG优先项目“气候工程”框架内提出了一个基于三维化学传输模型(CLaMS)不同模拟的项目。我们的目标是了解和量化这种新的臭氧损失机制的细节,并可靠地模拟气候工程条件下可能的臭氧损失。 将向气候工程界提供一种将中纬度臭氧损失与平流层硫酸盐增加的依赖性联系起来的算法,作为进一步经济分析的基础。我们的研究结果将有助于评估未来可能做出的气候工程决策,以最大限度地提高全球福利并最大限度地降低社会成本。
项目成果
期刊论文数量(3)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Mechanism of ozone loss under enhanced water vapour conditions in the mid-latitude lower stratosphere in summer
- DOI:10.5194/acp-19-5805-2019
- 发表时间:2018-12
- 期刊:
- 影响因子:6.3
- 作者:Sabine Robrecht;B. Vogel;J. Grooß;K. Rosenlof;T. Thornberry;A. Rollins;M. Krämer;L. Christensen;R. Müller
- 通讯作者:Sabine Robrecht;B. Vogel;J. Grooß;K. Rosenlof;T. Thornberry;A. Rollins;M. Krämer;L. Christensen;R. Müller
The relevance of reactions of the methyl peroxy radical (CH3O2) and methylhypochlorite (CH3OCl) for Antarctic chlorine activation and ozone loss
甲基过氧自由基(CH3O2)和次氯酸甲酯(CH3OCl)的反应与南极氯活化和臭氧损失的相关性
- DOI:10.1080/16000889.2018.1507391
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:Müller;Grooß;Robrecht;Lehmann
- 通讯作者:Lehmann
The maintenance of elevated active chlorine levels in the Antarctic lower stratosphere through HCl null cycles
通过 HCl 零循环维持南极平流层下部活性氯水平升高
- DOI:10.5194/acp-18-2985-2018
- 发表时间:2018
- 期刊:
- 影响因子:6.3
- 作者:Müller;Grooß;Robrecht;Lehmann
- 通讯作者:Lehmann
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Dr. Bärbel Vogel其他文献
Dr. Bärbel Vogel的其他文献
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{{ truncateString('Dr. Bärbel Vogel', 18)}}的其他基金
Air Mass Origin in the Lower Stratosphere using HALO Measurements and CLaMS Simulations (AMOS)
使用 HALO 测量和 CLaMS 模拟 (AMOS) 确定平流层下部的空气质量起源
- 批准号:
316738484 - 财政年份:2016
- 资助金额:
-- - 项目类别:
Infrastructure Priority Programmes
Air mass export from the Asian monsoon into theextratropical stratosphere: impact on chemistry and radiation (AirExam)
亚洲季风向温带平流层输出的气团:对化学和辐射的影响 (AirExam)
- 批准号:
461442379 - 财政年份:
- 资助金额:
-- - 项目类别:
Infrastructure Priority Programmes
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