Global change in atmospheric oxidation capacity owing to polar sea salt in Snow and ice: A CASE studentship with British Antarctic Survey

Theme: Earth, Atmosphere & Ocean Processes

Primary Supervisor:

Martin King

Department of Earth Sciences, RHUL

Martin King's Profile Picture
Additional Supervisor(s):

Project Description:

You will continue to develop a working model on the movement of halogens from sea salt between atmosphere, snow and ices. You will be based at British Antarctic Survey (BAS) in Cambridge. You will be an active member of vibrant research programmes with approximately 30+ PhD student work at BAS.

The interaction of sea salt and snow or sea ice can release reactive halogen compounds to the atmosphere. Sea salt and halogens within the sea salt can participate in chemical reactions that radically change the atmospheric (and upper snowpack) chemistry, causing remarkable ozone depletion events (ODP). ODP’s can radically alter the ability of the atmosphere to process pollutants, including GHG.

There are two deliverables from this project: –

1) Assessment of the regional oxidizing capacity of the polar regions owing to sea salt chemistry to distinguish between natural and anthropogenic process.

2) Continued development of relationships of the chemistry of ice cores to paleo sea ice distributions in last glacial-interglacial time scales.

The main drive of the project is to extend and apply a new chemical and physical flux model of polar snow with a wealth of data available from BAS. There will also be collaboration with global modellers at BAS to parametrize these processes for adoption in Global climate models to quantify global and regional climate impact of sea-salt in the polar environment.

The position would suit a numerical/physical scientist (physicist, chemist, engineer) with a strong interest in developing numerical models from first principles to describe real environmental physical and chemical processes and quantify climate. As well as strong coding skills the candidate must be prepared to produce many papers from this project and to potentially participate in a summer polar field excursion.

Policy Impact of Research:

The effect of polar climate change on the oxidising capacity of the atmosphere.

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