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Arctic climate extremes: the role of changing interactions between atmospheric modes (MARSHALLUBAS20ARIES)

Project Description


During the past few decades the Arctic has experienced the greatest warming on Earth: the resultant sea ice loss, permafrost melting and snow cover changes have affected the regional hydrology, ecosystems and indigenous peoples. One of the primary drivers is changes in atmospheric circulation. A small number of studies have demonstrated that the interplay between some of the many different circulation patterns or modes that influence Arctic climate variability can markedly change both the magnitude and spatial extent of their impact. Thus, there is a clear need to fully understand the interactions between all these different atmospheric modes to better constrain projections of how the Arctic climate will evolve, and in particular climate extremes, which have the greatest impact on human and natural systems.


The successful candidate will aim to answer the question, “To what extent are atmospheric mode interactions responsible for recent and projected changes in Arctic climate extremes?”

They will employ statistical analyses to evaluate the interplay between the different atmospheric modes that impact Arctic climate. Utilising an array of historical meteorological observations, they will define the ‘key’ mode interactions that have had the greatest impact on Arctic climate extremes.

Subsequently, using a combination of regional climate modelling and machine learning techniques, the student will determine the regional ‘fingerprints’ that these large-scale interactions have on Arctic climate extremes. This will allow them to efficiently downscale output from an ensemble of global climate models, as used by the Intergovernmental Panel on Climate Change (IPCC), in order to analyse the magnitude and uncertainty that future changes in the ‘key’ mode interactions will have on Arctic climate extremes under different climate scenarios.


In addition to the ARIES training programme, the candidate will have training opportunities in statistical methods, data analysis and visualisation techniques, climate modelling, machine learning tools for analysing ‘big data’ and public outreach.


We are looking for enthusiastic, self-reliant, and self-motivated candidates with a strong numerical background. Previous programming experience in one of Python, MatLab, IDL or similar computing environment would be advantageous.

More information on the supervisor for this project:
Type of programme: PhD
Start date: October 2020
Mode of study: Full-time or part-time
Studentship length: 3.5 years
Eligibility requirements: First degree in Maths, Physics or the Environmental Sciences

Funding Notes

This project has been shortlisted for funding by the ARIES NERC Doctoral Training Partnership, and will involve attendance at mandatory training events throughout the PhD.

Shortlisted applicants will be interviewed on 18/19 February 2020.

Successful candidates who meet UKRI’s eligibility criteria will be awarded a NERC studentship. UK and EU nationals who have been resident in the UK for 3 years are eligible for a full award.

Excellent applicants from quantitative disciplines with limited experience in environmental sciences may be considered for an additional 3-month stipend to take advanced-level courses in the subject area.

For further information, please visit View Website


Comas-Bru L, & McDermott F. 2014. Impacts of the EA and SCA patterns on the European twentieth century NAO-winter climate relationship. Quarterly Journal of the Royal Meteorological Society, 140: 354‒363, doi:10.1002/qj.2158.

Marshall GJ, Kivinen S, Jylhä K, Vignols RM, & Rees WG. 2018. The accuracy of climate variability and trends across Arctic Fennoscandia in four reanalyses. International Journal of Climatology, 38: 3878‒3895, doi:10.1002/joc.5541.

Moore GWK, Renfrew IA, & Pickart RS. 2013. Multidecadal mobility of the North Atlantic Oscillation. Journal of Climate, 26: 2453‒2466, doi:10.1175/JCLI-D-12-00023.1.

Overland JE, & Wang M. 2005. The third Arctic climate pattern: 1930s and early 2000s. Geophysical Research Letters, 32: L23808, doi:10.1029/2005GL024254.

Turner J, & Marshall GJ. 2011. Climate Change in the Polar Regions. Cambridge University Press, pp 434.

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