The lower stratosphere: interactions with the tropospheric chemistry/climate system

平流层下部：与对流层化学/气候系统的相互作用

• 批准号: NE/E017150/1
• 负责人: Kenneth Carslaw
• 金额: $ 23.22万
• 依托单位: University of Leeds
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FE017150%2F1
• 关键词: lower; stratosphere; interactions; tropospheric; chemistry

It is now well established that the atmospheric system is highly copled and that changes in one location can have a significant impact elsewhere. For example, changes in stratospheric ozone can have an important consequence for surface UV. The lower stratosphere is especially important. Itis a region where there have been recent changes in the concentrations of aerosol and ozone which are now known to have influenced surface climate and tropospheric composition although the details of the interactions are not fully resolved. We expect that composition in this region will cahnge in the future, for example, in response to changes in the abundance of greenhouse gases or ozone-deplting substances. It is important to assess the future impact on the climate system of aqny changes in lower startospheric composition. This is the major objective of our proposal and will be achieved by using a chemistry/climate model that the partners have helped to develop. We will use the UKCA model, based on the latest Met Office climate model, into which we have added detailed descriptins of atmospheric chemistry and aerosol. We will use the model to explore the processes involved in recent past changes (e.g. after the major eruption of Mt Pinatubo which injected a large amount of sulphur into the stratosphere leading to enhanced stratospheric aerosol and subsequent changes in surface temperature). We will also use the model to consider a range of scenarios as ozone 'recovers' in response to the Montreal Protocol. The model will be used to explore the scientific implications of geoengineering solutions recently proposed to mitigate the impact of greenhouse gas induced climate change.

现在已经很好地确定，大气系统已经高度交配，并且一个位置的变化在其他地方可能会产生重大影响。例如，平流层臭氧的变化可能对表面紫外线产生重要影响。较低的平流层特别重要。 IT是一个区域，最近已知气溶胶和臭氧浓度的变化已经影响了表面气候和对流层组成，尽管相互作用的细节尚未完全解决。我们预计将来，该地区的组成将来会响应丰富的温室气体或臭氧动物的变化。重要的是要评估对较低起始球组成的AQNY变化的未来对气候系统的影响。这是我们提案的主要目标，将通过使用合作伙伴帮助开发的化学/气候模型来实现。我们将根据最新的MET Office气候模型使用UKCA模型，并在其中添加了大气化学和气溶胶的详细描述。我们将使用该模型探索最近发生的变化（例如，在MT Pinatubo的主要喷发后，它将大量硫注入了平流层中，从而导致平流层气溶胶增强，并随后在表面温度的变化中变化）。我们还将使用该模型将一系列方案视为响应蒙特利尔协议的臭氧“恢复”。该模型将用于探索最近提出的地球工程解决方案的科学意义，以减轻温室气体诱发的气候变化的影响。

项目成果

Effects of climate-induced changes in isoprene emissions after the eruption of Mount Pinatubo

• DOI: 10.5194/acp-10-7117-2010
• 发表时间: 2010-08
• 期刊: Atmospheric Chemistry and Physics
• 影响因子: 6.3
• 作者: P. Telford;J. Lathiére;N. Abraham;A. Archibald;P. Braesicke;Colin Johnson;O. Morgenstern;F. O’Connor;R. Pike;O. Wild;P. Young;D. Beerling;C. Hewitt;J. Pyle

Attribution of observed changes in stratospheric ozone and temperature

• DOI: 10.5194/acp-11-599-2011
• 发表时间: 2010-07
• 期刊: Atmospheric Chemistry and Physics
• 影响因子: 6.3
• 作者: N. Gillett;H. Akiyoshi;S. Bekki;P. Braesicke;V. Eyring;R. Garcia;A. Karpechko;C. McLinden;O. Morgenstern;D. Plummer;J. Pyle;E. Rozanov;J. Scinocca;K. Shibata

Aerosol microphysics simulations of the Mt. Pinatubo eruption with the UKCA composition-climate model

使用 UKCA 成分-气候模型对皮纳图博火山喷发进行气溶胶微物理模拟

• DOI: 10.5194/acpd-14-2799-2014
• 发表时间: 2014
• 作者: Dhomse S

Might dimming the sun change atmospheric ENSO teleconnections as we know them?

使太阳变暗可能会改变我们所知的大气 ENSO 遥相关吗？

• DOI: 10.1002/asl.294
• 发表时间: 2010
• 期刊: Atmospheric Science Letters
• 影响因子: 3
• 作者: Braesicke P