Atmospheric impacts from the water-rich Hunga-Tonga large-magnitude eruption

该博士项目将涉及英国火山气溶胶成分-气候相互作用模式UM-UKCA的模型实验（Dhomse et al., 2020; Marshall et al., 2019; Dhomse et al., 2014）。模型实验重新分析了Hunga-Tonga云的进程，并与2014年克鲁德火山喷发或1883年喀拉喀托火山喷发等富含火山灰的硫主导的情况进行了对比。CALIOP和MLS观测了匈牙利-汤加气溶胶和富水层的分离，UM-UKCA解决了辐射、微物理和动力过程，这些过程决定了其影响的大小和持续时间。博士项目的重点是在英国的地球系统模型（UKESM）中预测未来类似喀拉喀托火山的富含硫的大震级爆发的影响。该项目使用的UM-UKCA模型具有世界领先的能力，可以很好地描述火山对气候的影响，平流层环流和动力学，辐射传输模块，交互式psc，气溶胶微物理和化学方案旨在解决水蒸气的影响。因此，该学生有潜力发表高影响力的论文，介绍匈牙利-汤加对平流层、气候和南极臭氧洞的影响。

This PhD project will involve model experiments with the UK' s interactive volcanic aerosol composition-climate model UM-UKCA (Dhomse et al., 2020; Marshall et al., 2019; Dhomse et al., 2014). Model experiments to re-analyse the progression of the Hunga-Tonga cloud, and contrast with ash-rich sulphur-dominated case such as the 2014 Kelud eruption or the 1883 Krakatau eruption. The CALIOP and MLS observing the separation of the Hunga-Tonga aerosol and water-rich layers, and UM-UKCA resolves the radiative, microphysical and dynamical processes that have determined the magnitude and longevity of its effects. The PhD project focuses on predicting the effects from future Krakatau-like sulphur-rich large-magnitude explosive phreatomagmatic eruption within the UK's Earth System Model (UKESM).The UM-UKCA model used for this project has world-leading capability to represent volcanic impacts on climate, with well-resolved stratospheric circulation and dynamics, with the radiative-transfer module, interactive PSCs, aerosol microphysics, and chemistry schemes designed to resolve the water vapour influences. The studentship therefore has the potential for high-impact papers presenting Hunga-Tonga impacts on the stratosphere, climate and the Antarctic ozone hole.