met-jobs@lists.reading.ac.uk
November 2014
Message 81

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[Met-jobs] 2 PhD Positions at Victoria University of Wellington (New Zealand)

From "Roger Brugge" <r.brugge@reading.ac.uk>
To "met-jobs@lists.reading.ac.uk" <met-jobs@lists.reading.ac.uk>
Date Wed, 26 Nov 2014 10:12:17 +0000

Forwarded from CLIMLIST...

Two related PhD positions are available to work on Antarctic sea ice
analysis and modelling. For either position, end a letter of
application, plus a copy of your CV and academic transcripts, to Prof.
James Renwick at james.renwick@vuw.ac.nz
<mailto:james.renwick@vuw.ac.nz>. The deadline for applications is 31
January 2015. We aim to award the scholarship and have the student in
place by March 2015.

PhD scholarship 1: Antarctic sea ice trends and variability

Location: Victoria University of Wellington, Wellington, New Zealand

Duration: 3 years from March 2015

*Deadline for applications: 31 January 2015*

A new fully-funded PhD scholarship is available, to study trends in
Antarctic sea ice extent, with a focus on the opposing trends over the
Ross and Amundsen Sea regions, using the observational record during the
satellite era (since 1979). This is an exciting opportunity to do
cutting-edge research in an area of great interest to the climate
community worldwide. The student will be based at Victoria University’s
School of Geography, Environment and Earth Sciences (SGEES), in
Wellington, New Zealand’s capital city.

The PhD project aims to understand observed trends in Antarctic sea ice
extent, including their seasonal variability and their evolution on the
decadal time scale. The student will make use of satellite-observed sea
ice concentrations and ice motion data, plus atmospheric reanalyses and
simulated ocean surface wave conditions to explore atmosphere-ice
linkages and teleconnections to tropical and other forcings. A variety
of statistical approaches will be employed to explore relationships and
for physically-based hypothesis testing. A component of the work will
involve evaluation of the performance of the current era of climate
models (CMIP5 and CMIP6 as available) in terms of simulating the
Antarctic sea ice field, and observed linkages and teleconnections.

The chief supervisor of the work will be Professor James Renwick (VUW),
working in collaboration with Dr Sam Dean at NIWA, and with advice from
Professor Marilyn Raphael (UCLA) and Professor Ian Simmonds (U. Melbourne).

The successful student should have a background in climate dynamics
and/or meteorology, and ideally some familiarity with statistical
analysis of large gridded data set (e.g. reanalyses) using standard
techniques such as Empirical Orthogonal Functions and cluster analysis.

This PhD project is one component of a larger programme to understand
and model trends in Antarctic sea ice, funded by the Marsden Fund
(administered by the Royal Society of New Zealand). The modelling
component of the overall programme supports a second PhD scholarship.
There will be considerable liaison between the observational and
modelling components of the work so the successful student is likely to
gain some insights into climate modelling as well as experience in
climate data analysis.

------------------------------------------------------------------------------------

PhD scholarship 2: Antarctic sea ice modelling

Location: Victoria University of Wellington, and the National Institute
of Water and Atmospheric Research, Wellington, New Zealand

Duration: 3 years from March 2015

*Deadline for applications: 31 January 2015*

A new fully-funded PhD scholarship is available, to improve our ability
to model trends in Antarctic sea ice extent, especially the
recently-observed overall increase in total extent, and the opposing
trends over the Ross and Amundsen Sea regions. This is an exciting
opportunity to do cutting-edge research in an area of great interest to
the climate community worldwide. The student will be enrolled at
Victoria University’s School of Geography, Environment and Earth
Sciences, but will spend much of their time at the National Institute of
Water and Atmospheric research (NIWA) in Wellington, New Zealand’s
capital city.

The research project is built around improving our ability to simulate
trends in Antarctic sea ice extent using the HadGEM coupled
ocean-atmosphere-ice GCM developed at the UK MetOffice. Recent work by
us has suggested that changes in ocean waves may play a role in
Antarctic sea ice extent trends (see /Nature/, doi:10.1038/nature13262).
The student will investigate this hypothesis, using the full HadGEM GCM,
and the individual modules, especially the sea ice module ‘CICE’. A
major part of the work will involve incorporation of floe size
distributions and the influence of ocean surface waves upon the sea ice
field in CICE, to produce what is termed the ‘WAVE-CICE’ scheme.
Determining a numerical scheme for predicting change to the floe-size
distribution under a given wave regime will come from a combination of
existing and planned observational campaigns and from the existing
literature. The development of WAVE-CICE will be a new and exciting step
forward for the climate modelling community world-wide.

Once implemented, WAVE-CICE and other components of the HadGEM modelling
system will be used to carry out a series of sensitivity experiments to
help determine the controlling factors of recently-observed trends in
Antarctic sea ice extent, and to explore possible futures for the
Antarctic sea ice field.

The chief supervisor of the work will be Dr Sam Dean at NIWA, with
co-supervision from Dr Alison Kohout (NIWA Christchurch) and advice from
Professor Cecilia Bitz (U. Washington, Seattle).

The successful student should have a background in climate dynamics
and/or meteorology, and some familiarity with climate modelling, ideally
with experience of HadGEM.

This PhD project is one component of a larger programme to understand
and model trends in Antarctic sea ice, funded by the Marsden Fund
(administered by the Royal Society of New Zealand). The observational
component of the overall programme supports a second PhD scholarship.
There will be considerable liaison between the observational and
modelling components of the work so the successful student is likely to
gain some insights into climate data analysis as well as experience in
climate modelling and model development.

------------------------------------------------------------------------------------

For more information about VUW SGEES, visit www.victoria.ac.nz/sgees
<http://www.victoria.ac.nz/sgees>

For more information about NIWA, visit www.niwa.co.nz
<http://www.niwa.co.nz>

--

Dr James Renwick

Professor of Physical Geography

School of Geography, Environment and Earth Sciences

Victoria University of Wellington

Cotton 206, VUW Kelburn

www.victoria.ac.nz/sgees/about/staff/james-renwick
<http://www.victoria.ac.nz/sgees/about/staff/james-renwick>



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