|From||"Halloran, Paul" <P.Halloran@exeter.ac.uk>|
|Date||Wed, 3 Jan 2018 10:58:40 +0000|
This NERC CASE funded 4 year project is looking to appoint a talented, enthusiastic and numerically minded PhD student to work between the University of Exeter and Met Office from September 2018, to help improve our understanding of Southern Ocean climate. A key natural marine aerosol (atmospheric particles) precursor is Dimethyl Sulphide (DMS), a gas produced through biological activity in the surface ocean. Natural background emissions of DMS were an important contributor to the total aerosol concentration in the pre-industrial era. How “dirty” our pre-industrial atmosphere was determines how sensitive our current climate system is to additional aerosol particles emitted by humans via activities such as power production agriculture (Carslaw et al., 2013). The state-of-the-art climate model, UKESM1, is being developed by the Met Office and UK scientific community. This model shows that the level of these pre-industrial emissions may have a big impact on how much our planet has warmed in response to industrialisation. We also hypothesise that these emissions may help explain why global climate models typically overestimate Southern Ocean surface temperatures. We want to work with you to: - Develop novel climatologies of surface ocean DMS concentrations, carefully exploring potential uncertainties. To further this, there is the possibility of making new DMS measurements in the Southern Ocean to help fill gaps in our understanding. - Perform new climate model experiments at the Met Office, to quantify how sensitive our climate system, and particularly Southern Ocean surface temperatures, are to this DMS emission uncertainty. - Use this information to improve or explain the UK’s state-of-the-art climate simulations. For details and to apply see: http://www.exeter.ac.uk/studying/funding/award/?id=3009 If you have any questions, please contact Paul Halloran email@example.com or Jane Mulcahy firstname.lastname@example.org
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