Profiles

Andreas Klocker

UTAS Home Dr Andreas Klocker

Andreas Klocker

Research Fellow

Room 213.14, IMAS Hobart, Hobart CBD Campuses

Dr Andreas Klocker is an ARC DECRA Fellow at the Institute for Marine and Antarctic Studies (IMAS). His work focuses on understanding ocean turbulence and its effects on large-scale ocean circulation, with a special interest in the Antarctic Circumpolar Current and the Antarctic Slope Front Current. To understand these fundamental processes, he uses a combination of theory, numerical ocean models and observations.

Biography

Dr Klocker successfully completed a diploma in marine environmental science in Germany, and moved to Hobart to work with Dr. John Hunter as honorary research fellow at the Antarctic Climate and Ecosystems CRC.  He was then invited to undertake a PhD as part of the UTAS-CSIRO joint PhD program in Quantitative Marine Science (QMS) where he worked with Prof. Trevor McDougall on understanding the fascinating processes in the ocean caused by the nonlinear equation of state. After obtaining his PhD, Andreas was then offered a postdoctoral position at the Massachusetts Institute of Technology where he worked on ocean turbulence in the Southern Ocean as part of the international DIMES project.  He returned to Australia as a Research Fellow at the ARC Centre of Excellence in Climate System Science and the Australian National University.  Dr Klocker was then awarded an ARC DECRA Fellow at the Institute for Marine and Antarctic Studies continuing his specialist work on ocean turbulence.

Career summary

Qualifications

  • PhD in Quantitative Marine Science (2010): Diapycnal advection by nonlinear processes in the ocean. University of Tasmania/CSIRO Marine and Atmospheric Research
  • Diploma (2004): Effect of the Isthmus of Panama on the sensitivity of the climate system to Earth's orbital parameters. Carl von Ossietzky University Oldenburg, Germany

Languages (other than English)

German

Teaching

Physical oceanography, geophysical fluid dynamics, ocean modelling

Teaching responsibility

Research Invitations

Invited guest researcher at the International Meteorological Institute (IMI), University of Stockholm (August 2015).

View more on Dr Andreas Klocker in WARP

Expertise

  • Physical oceanography
  • Mesoscale dynamics
  • Ocean geostrophic turbulence 
  • Eddy mixing
  • Geophysical fluid dynamics
  • Ocean modelling

Research Themes

Andreas' research aligns to the University's research theme of Marine, Antarctic and Maritime. His research interests include understanding how small-scale turbulent processes in the ocean affect large-scale ocean circulation and climate. These small-scale processes are key to understanding our global climate since they play a major role in determining, for example, the uptake of heat and carbon into the global ocean.  They are also vital to the transport of warm ocean currents towards Antarctic ice shelves, leading to the melting of these ice shelves and subsequently sea-level change. Current global climate models are not yet capable of resolving these small-scale processes due to computational constraints, and a substantial part of Andreas' work is therefore aimed at improving the representation of these processes in climate models that will help develop our understanding of the changing global environment.

Collaboration

Nationally, Andreas collaborates closely with both the Antarctic Climate and Ecosystems CRC (ACE CRC) and the Antarctic Gateway Partnership, mainly through the joint supervision of PhD students, on projects involving the understanding of the role of ocean turbulence in transporting warm water from the Southern Ocean across the Antarctic continental shelf towards ice shelves, leading to the melting of ice shelves and consequently sea-level rise. Andreas also works with collaborators at the ACE CRC to understand the role of physical processes on Southern Ocean ecosystems. 

Internationally, Andreas works closely with collaborators in the UK (Prof. David Marshall at the University of Oxford, Drs Dave Munday and Dan Jones at the British Antarctic Survey and Prof. Alberto Naveira Garabato at the University of Southampton), in Scotland (Dr. James Maddison at the University of Edinburgh) and in the US (A/Prof. Ryan Abernathey and Dr. Sjoerd Groeskamp at Columbia University). With these international collaborators Andreas works mainly on topics related to his ARC DECRA project, 'Mixing hot spots in the Southern Ocean: processes, parameterisations and impacts' and other projects related to ocean geostrophic turbulence.

Awards

  • Discovery Early Career Researcher Award (2014-2017)
  • Australian Bicentennial Fellowship Award (2013)
  • CSIRO Postgraduate Wealth from Oceans Flagship Scholarship (2008)
  • Scholarship - UTAS-CSIRO joint PhD program in Quantitative Marine Science (2004-2009)

Current projects

Mixing hot spots in the Southern Ocean: processes, parameterisations and impacts

The Southern Ocean plays a critical role for the uptake of heat and carbon dioxide from the atmosphere into the deep ocean. This uptake depends strongly on mixing processes due to ocean eddies, which are especially important in regions of steep topography, leading to localised mixing hot spots. These ocean eddies have scales of 10-100km and therefore cannot be resolved in current global climate models. This study will examine these mixing processes using a combination of observations and innovative modeling approaches. This knowledge will be used to improve the representation of eddy processes in state-of-the-art climate models, which will ultimately allow Australia to more effectively respond to the challenge of climate change.

Fields of Research

  • Physical Oceanography (040503)
  • Geophysical Fluid Dynamics (040403)
  • Oceanography (040599)
  • Biological Oceanography (040501)
  • Earth Sciences (049999)
  • Marine and Estuarine Ecology (incl. Marine Ichthyology) (060205)
  • Marine Geoscience (040305)
  • Climate Change Processes (040104)
  • Geodynamics (040402)
  • Tectonics (040313)

Research Objectives

  • Climate and Climate Change (960399)
  • Antarctic and Sub-Antarctic Oceanography (969901)
  • Marine Oceanic Processes (excl. climate related) (969902)
  • Climate Change Models (960303)
  • Expanding Knowledge in the Earth Sciences (970104)
  • Climate Variability (excl. Social Impacts) (960304)
  • Ecosystem Assessment and Management of Marine Environments (960507)
  • Effects of Climate Change and Variability on Antarctic and Sub-Antarctic Environments (excl. Social Impacts) (960306)

Publications

Total publications

35

Highlighted publications

(6 outputs)
YearTypeCitationAltmetrics
2018Journal ArticleKlocker A, 'Opening the window to the Southern Ocean: the role of jet dynamics', Science Advances Article eaao4719. ISSN 2375-2548 (In Press) [Refereed Article]

[eCite] [Details]

2014Journal ArticleKlocker A, Abernathey R, 'Global patterns of mesoscale eddy properties and diffusivities', Journal of Physical Oceanography, 44, (3) pp. 1030-1046. ISSN 0022-3670 (2014) [Refereed Article]

DOI: 10.1175/JPO-D-13-0159.1 [eCite] [Details]

Citations: Scopus - 42Web of Science - 42

Tweet

2012Journal ArticleKlocker A, Ferrari R, LaCasce JH, 'Estimating suppression of eddy mixing by mean flows', Journal of Physical Oceanography, 42 pp. 1566-1576. ISSN 0022-3670 (2012) [Refereed Article]

DOI: 10.1175/JPO-D-11-0205.1 [eCite] [Details]

Citations: Scopus - 46Web of Science - 46

Tweet

2010Journal ArticleKlocker A, McDougall TJ, 'Influence of the Nonlinear Equation of State on Global Estimates of Dianeutral Advection and Diffusion', Journal of Physical Oceanography, 40, (8) pp. 1690-1709. ISSN 0022-3670 (2010) [Refereed Article]

DOI: 10.1175/2010JPO4303.1 [eCite] [Details]

Citations: Scopus - 55Web of Science - 51

Tweet

2007Journal ArticleSchulz M, Prange M, Klocker A, 'Low-frequency oscillations of the Atlantic Ocean meridional overturning circulation in a coupled climate model', Climate of the Past, 3 pp. 97-107. ISSN 1814-9324 (2007) [Refereed Article]

[eCite] [Details]

2005Journal ArticleKlocker A, Prange M, Schulz M, 'Testing the influence of the Central American Seaway on orbitally forced Northern Hemisphere glaciation', Geophysical Research Letters, 32, (3) pp. 1-4. ISSN 0094-8276 (2005) [Refereed Article]

DOI: 10.1029/2004GL021564 [eCite] [Details]

Citations: Scopus - 23Web of Science - 34

Tweet

Journal Article

(29 outputs)
YearCitationAltmetrics
2018Klocker A, 'Opening the window to the Southern Ocean: the role of jet dynamics', Science Advances Article eaao4719. ISSN 2375-2548 (In Press) [Refereed Article]

[eCite] [Details]

2018Schallenberg C, Bestley S, Klocker A, Trull TW, Davies DM, et al., 'Sustained upwelling of subsurface iron supplies seasonally persistent phytoplankton blooms around the Southern Kerguelen Plateau, Southern Ocean', Journal of Geophysical Research: Oceans, 123, (8) pp. 5986-6003. ISSN 2169-9275 (2018) [Refereed Article]

DOI: 10.1029/2018JC013932 [eCite] [Details]

Co-authors: Schallenberg C; Bestley S; Trull TW; Davies DM; Roden NP; Townsend AT; van der Merwe P; Westwood K; Wuttig K; Bowie A

Tweet

2018Stewart AL, Klocker A, Menemenlis D, 'Circum-Antarctic shoreward heat transport derived from an eddy- and tide-resolving simulation', Geophysical Research Letters, 45, (2) pp. 834-845. ISSN 0094-8276 (2018) [Refereed Article]

DOI: 10.1002/2017GL075677 [eCite] [Details]

Citations: Scopus - 3Web of Science - 3

Tweet

2018Mori M, Corney SP, Melbourne-Thomas J, Klocker A, Kawaguchi S, et al., 'Modelling dispersal of juvenile krill released from the Antarctic ice edge: ecosystem implications of ocean movement', Journal of Marine Systems pp. 1-40. ISSN 0924-7963 (In Press) [Refereed Article]

DOI: 10.1016/j.jmarsys.2018.09.005 [eCite] [Details]

Co-authors: Mori M; Corney SP; Melbourne-Thomas J; Kawaguchi S; Constable A; Sumner MD

Tweet

2017Mori M, Corney SP, Melbourne-Thomas J, Klocker A, Sumner M, et al., 'A biologically relevant method for considering patterns of oceanic retention in the Southern Ocean', Progress in Oceanography, 159 pp. 1-12. ISSN 0079-6611 (2017) [Refereed Article]

DOI: 10.1016/j.pocean.2017.09.008 [eCite] [Details]

Citations: Scopus - 1

Co-authors: Mori M; Corney SP; Melbourne-Thomas J; Constable A

Tweet

2017Priester CR, Melbourne-Thomas J, Klocker A, Corney S, 'Abrupt transitions in dynamics of a NPZD model across Southern Ocean fronts', Ecological Modelling, 359 pp. 372-382. ISSN 0304-3800 (2017) [Refereed Article]

DOI: 10.1016/j.ecolmodel.2017.05.030 [eCite] [Details]

Co-authors: Melbourne-Thomas J; Corney S

Tweet

2016Groeskamp S, Abernathey RP, Klocker A, 'Water mass transformation by cabbeling and thermobaricity', Geophysical Research Letters, 43, (20) pp. 10,835-10,845. ISSN 0094-8276 (2016) [Refereed Article]

DOI: 10.1002/2016GL070860 [eCite] [Details]

Citations: Scopus - 6Web of Science - 7

Tweet

2016Klocker A, Marshall DP, Keating SR, Read PL, 'A regime diagram for ocean geostrophic turbulence', Quarterly Journal of the Royal Meteorological Society, 142, (699) pp. 2411-2417. ISSN 0035-9009 (2016) [Refereed Article]

DOI: 10.1002/qj.2833 [eCite] [Details]

Citations: Scopus - 4Web of Science - 4

Tweet

2016Mori M, Corney SP, Melbourne-Thomas J, Welsford DC, Klocker A, et al., 'Using satellite altimetry to inform hypotheses of transport of early lifestage of Patagonian toothfish on the Kerguelen Plateau', Ecological Modelling, 340 pp. 45-56. ISSN 0304-3800 (2016) [Refereed Article]

DOI: 10.1016/j.ecolmodel.2016.08.013 [eCite] [Details]

Citations: Scopus - 3Web of Science - 2

Co-authors: Mori M; Corney SP; Melbourne-Thomas J

Tweet

2015Jones DC, Ito T, Birner T, Klocker A, Munday D, 'Planetary-geometric constraints on isopycnal slope in the Southern Ocean', Journal of Physical Oceanography, 45, (12) pp. 2991-3004. ISSN 0022-3670 (2015) [Refereed Article]

DOI: 10.1175/JPO-D-15-0034.1 [eCite] [Details]

Citations: Scopus - 1Web of Science - 1

Tweet

2014Klocker A, Abernathey R, 'Global patterns of mesoscale eddy properties and diffusivities', Journal of Physical Oceanography, 44, (3) pp. 1030-1046. ISSN 0022-3670 (2014) [Refereed Article]

DOI: 10.1175/JPO-D-13-0159.1 [eCite] [Details]

Citations: Scopus - 42Web of Science - 42

Tweet

2014Klocker A, Marshall DP, 'Advection of baroclinic eddies by depth mean flow', Geophysical Research Letters, 41, (10) pp. 3517-3521. ISSN 0094-8276 (2014) [Refereed Article]

DOI: 10.1002/2014GL060001 [eCite] [Details]

Citations: Scopus - 15Web of Science - 16

Tweet

2014Palter JB, Griffies SM, Samuels BL, Galbraith ED, Gnanadesikan A, et al., 'The deep ocean buoyancy budget and its temporal variability', Journal of Climate, 27, (2) pp. 551-573. ISSN 0894-8755 (2014) [Refereed Article]

DOI: 10.1175/JCLI-D-13-00016.1 [eCite] [Details]

Citations: Scopus - 15Web of Science - 14

Tweet

2014Rosso I, Hogg A McC, Strutton PG, Kiss AE, Matear R, et al., 'Vertical transport in the ocean due to sub-mesoscale structures: impacts in the Kerguelen region', Ocean Modelling, 80 pp. 10-23. ISSN 1463-5003 (2014) [Refereed Article]

DOI: 10.1016/j.ocemod.2014.05.001 [eCite] [Details]

Citations: Scopus - 19Web of Science - 24

Co-authors: Strutton PG

Tweet

2014Tulloch R, Ferrari R, Jahn O, Klocker A, LaCasce J, et al., 'Direct estimate of lateral eddy diffusivity upstream of Drake Passage', Journal of Physical Oceanography, 44, (10) pp. 2593-2616. ISSN 0022-3670 (2014) [Refereed Article]

DOI: 10.1175/JPO-D-13-0120.1 [eCite] [Details]

Citations: Scopus - 27Web of Science - 25

Tweet

2013Abernathy R, Ferreira D, Klocker A, 'Diagnostics of isopycnal mixing in a circumpolar channel', Ocean Modelling, 72 pp. 1-16. ISSN 1463-5003 (2013) [Refereed Article]

DOI: 10.1016/j.ocemod.2013.07.004 [eCite] [Details]

Citations: Scopus - 32Web of Science - 30

Tweet

2012Klocker A, Ferrari R, LaCasce JH, 'Estimating suppression of eddy mixing by mean flows', Journal of Physical Oceanography, 42 pp. 1566-1576. ISSN 0022-3670 (2012) [Refereed Article]

DOI: 10.1175/JPO-D-11-0205.1 [eCite] [Details]

Citations: Scopus - 46Web of Science - 46

Tweet

2012Klocker A, Ferrari R, LaCasce JH, Merrifield ST, 'Reconciling float-based and tracer-based estimates of lateral diffusivities', Journal of Marine Research, 70 pp. 569-602. ISSN 0022-2402 (2012) [Refereed Article]

DOI: 10.1357/002224012805262743 [eCite] [Details]

Citations: Scopus - 42Web of Science - 42

Tweet

2012Gille ST, Ledwell J, Naveira-Garabato A, Speer K, Balwada D, et al., 'The Diapycnal and Isopycnal Mixing Experiment: A First Assessment', CLIVAR Exchanges, 17, (1) pp. 46-48. ISSN 1026-0471 (2012) [Non Refereed Article]

[eCite] [Details]

Tweet

2011Williams GD, Meijers AJS, Poole A, Mathiot P, Tamura T, et al., 'Late winter oceanography off the Sabrina and BANZARE coast (117-128°E), East Antarctica', Deep-Sea Research. Part 2: Topical Studies in Oceanography, 58, (9-10) pp. 1194-1210. ISSN 0967-0645 (2011) [Refereed Article]

DOI: 10.1016/j.dsr2.2010.10.035 [eCite] [Details]

Citations: Scopus - 29Web of Science - 26

Co-authors: Williams GD; Meijers AJS; Tamura T

Tweet

2010Klocker A, McDougall TJ, 'Quantifying the Consequences of the Ill-Defined Nature of Neutral Surfaces', Journal of Physical Oceanography, 40, (8) pp. 1866-1880. ISSN 0022-3670 (2010) [Refereed Article]

DOI: 10.1175/2009JPO4212.1 [eCite] [Details]

Citations: Scopus - 7Web of Science - 8

Tweet

2010Klocker A, McDougall TJ, 'Influence of the Nonlinear Equation of State on Global Estimates of Dianeutral Advection and Diffusion', Journal of Physical Oceanography, 40, (8) pp. 1690-1709. ISSN 0022-3670 (2010) [Refereed Article]

DOI: 10.1175/2010JPO4303.1 [eCite] [Details]

Citations: Scopus - 55Web of Science - 51

Tweet

2010McDougall TJ, Klocker A, 'An approximate geostrophic streamfunction for use in density surfaces', Ocean Modelling, 32, (3-4) pp. 105-117. ISSN 1463-5003 (2010) [Refereed Article]

DOI: 10.1016/j.ocemod.2009.10.006 [eCite] [Details]

Citations: Scopus - 14Web of Science - 14

Tweet

2010Meijers AJ, Klocker A, Bindoff NL, Williams GD, Marsland SJ, 'The circulation and water masses of the Antarctic shelf and continental slope between 30 and 80 E', Deep-Sea Research. Part 2: Topical Studies in Oceanography, 57, (9-10) pp. 723-737. ISSN 0967-0645 (2010) [Refereed Article]

DOI: 10.1016/j.dsr2.2009.04.019 [eCite] [Details]

Citations: Scopus - 49Web of Science - 47

Co-authors: Meijers AJ; Bindoff NL; Williams GD

Tweet

2010Williams GD, Nicol S, Aoki S, Meijers AJ, Bindoff NL, et al., 'Surface oceanography of BROKE-West, along the Antarctic margin of the south-west Indian Ocean (30-80 degrees E)', Deep-Sea Research Part II -Topical Studies in Oceanography, 57, (9-10) pp. 738-757. ISSN 0967-0645 (2010) [Refereed Article]

DOI: 10.1016/j.dsr2.2009.04.020 [eCite] [Details]

Citations: Scopus - 39Web of Science - 36

Co-authors: Williams GD; Meijers AJ; Bindoff NL

Tweet

2009Klocker A, McDougall TJ, Jackett DR, 'A new method for forming approximately neutral surfaces', Oceans Science, 5 pp. 155-172. ISSN 1812-0806 (2009) [Refereed Article]

[eCite] [Details]

Tweet

2009Klocker A, McDougall TJ, Jackett DR, 'Corrigendum to 'A new method for forming approximately neutral surfaces' published in Ocean Sci., 5, 155-172, 2009', Oceans Science, 5 pp. 191. ISSN 1812-0806 (2009) [Refereed Article]

[eCite] [Details]

Tweet

2007Schulz M, Prange M, Klocker A, 'Low-frequency oscillations of the Atlantic Ocean meridional overturning circulation in a coupled climate model', Climate of the Past, 3 pp. 97-107. ISSN 1814-9324 (2007) [Refereed Article]

[eCite] [Details]

Tweet

2005Klocker A, Prange M, Schulz M, 'Testing the influence of the Central American Seaway on orbitally forced Northern Hemisphere glaciation', Geophysical Research Letters, 32, (3) pp. 1-4. ISSN 0094-8276 (2005) [Refereed Article]

DOI: 10.1029/2004GL021564 [eCite] [Details]

Citations: Scopus - 23Web of Science - 34

Tweet

Conference Publication

(4 outputs)
YearCitationAltmetrics
2009Williams GD, Meijers AJ, Poole A, Mathiot P, Tamura T, et al., 'Late Winter Oceanography beneath East Antarctic Sea Ice during SIPEX', Japan Oceanographic Society, September 2009, Kyoto, Japan, pp. unknown. (2009) [Conference Extract]

[eCite] [Details]

Co-authors: Williams GD; Meijers AJ; Tamura T

2007Williams GD, Marsland SJ, Meijers AJ, Klocker A, Nicol S, et al., 'The Antarctic Slope Front along East Antarctica, 30-80 East', European Geophysical Union Spring Meeting, April 2007, San Francisco, USA, pp. unknown. (2007) [Conference Extract]

[eCite] [Details]

Co-authors: Williams GD; Marsland SJ; Meijers AJ; Nicol S; Bindoff NL

2006Williams GD, Marsland SJ, Bindoff NL, Nicol S, Aoki S, et al., 'Surface Oceanography during the BROKE-West research voyage (30-80E)', 2nd Scientific Committee on Antarctic Research (SCAR) Open Science Conference, July 2006, Hobart, Tasmania, pp. unknown. (2006) [Conference Extract]

[eCite] [Details]

Co-authors: Williams GD; Marsland SJ; Bindoff NL; Nicol S; Meijers AJ

2006Williams GD, Marsland SJ, Meijers AJ, Klocker A, Nicol S, et al., 'The Antarctic Slope Front along East Antarctica, 30-80 East', American Geophysical Union Fall Meeting, November 2006, San Francisco, USA, pp. unknown. (2006) [Conference Extract]

[eCite] [Details]

Co-authors: Williams GD; Marsland SJ; Meijers AJ; Nicol S; Bindoff NL

Thesis

(2 outputs)
YearCitationAltmetrics
2009Klocker A, 'Diapycnal advection by nonlinear processes in the ocean' (2009) [PhD]

[eCite] [Details]

2004Klocker A, 'Effect of the Isthmus of Panama on the sensitivity of the climate system to variations in Earth's orbital parameters' (2004) [Masters Research]

[eCite] [Details]

Grants & Funding

Funding Summary

Number of grants

6

Total funding

$905,679

Projects

How the complexity of continental breakup controls ocean circulation (2018 - 2020)$446,340
Funding
Australian Research Council ($446,340)
Scheme
Grant-Discovery Projects
Administered By
University of Tasmania
Research Team
Whittaker J; Klocker A; Williams Simon; Gaina C; Munday D; Brune S
Period
2018 - 2020
Grant Reference
DP180102280
Eddy transport of ocean heat to Antarctic ice shelves: fundamental dynamics and climate impact (2016)$14,389
Description
The aim of this proposal is to initiate a large project to investigate the processes mentioned above by developing a state-of-the-art model configuration, using the Regional Ocean Modeling System (ROMS), with two key features:1. The domain of this model covers Antarctica and the continental shelf seas, northwards to the abyssal ocean. From observations we know that in certain regions significant amounts of relatively warm water can reach ice shelves and cause large basal melt rates, whereas for other ice shelves that are well protected from intrusions of warm water, basal melt rates are comparatively lower. Only the use of a full circum-Antarctic domain will allow us to compare the relevant processes in different regions.2. The spatial resolution of this model will be 1 km, which has been shown to be the minimum resolution required to resolve the dynamics of mesoscale eddies relevant to the transport of warm waters to the shelf.
Funding
University of Tasmania ($14,389)
Scheme
Grant-Research Enhancement (REGS)
Administered By
University of Tasmania
Research Team
Klocker A; Gwyther DE; Galton-Fenzi B
Year
2016
Turbulence and mixing in the Southern Ocean (2015)$0
Description
The Southern Ocean plays a key role in the global ocean circulation and climate. This is, to a large extent, owing to turbulent motions at a wide range of scales from mesoscale eddies at 10-100 km to internal wave breaking at 10-100 m scales. Turbulent motions enhance stirring and mixing of tracers and hence facilitate the uptake, transport, and storage of heat, carbon, and nutrients in global ocean. Topographic features, such as ridges and abyssal hills, effectively catalyse the generation of turbulent motions, creating localised hot spots of eddy stirring and turbulent mixing. The Southern Ocean turbulent processes remain poorly understood and inadequately represented in global models.The goal of this project is to explore turbulent processes in regions of major topographic features in the Southern Ocean and to improve their representation in global ocean and climate models.
Funding
National Computational Infrastructure ($0)
Scheme
Merit Allocation Scheme
Administered By
University of Tasmania
Research Team
Bindoff NL; Nikurashin M; Klocker A
Year
2015
Ocean forced evolution of the Antarctic Ice Sheet (2015)$50,365
Description
Preparing for the impacts of sea level rise needs an improved understand of the response of the Antarctic Ice Sheet to changing ocean conditions. Over the last decade it has become clear that more ocean driven melting beneath ice shelves is causing the Antarctic Ice Sheet to lose ice at an increasing rate, contributing to sea-level rise. This project will explain the role of the ocean in controlling this dynamic behavior of the Antarctic Ice Sheet. We will use state-of-the-art numerical modelling and available observations to determine the key processes that govern how the Antarctic ice flows into the oceans, together with the assessment of possible future change. This proposal will provide improved understanding of the processes controlling ice sheet and sea level and will help to provide realistic estimates of freshwater and heat transport in a global ocean context.
Funding
Department of Environment and Energy (Cwth) ($50,365)
Scheme
Grant-Australian Antarctic Science
Administered By
Department of Environment and Energy (Cwth)
Research Team
Galton-Fenzi B; Dinniman M; Gayen B; Gladstone R; Greve R; Heimbach P; Hobbs WR; Jourdain N; King MA; Klinck J; Klocker A; Rintoul SR; Roberts JL; Treverrow A; Warner RC; Williams GD
Year
2015
Mixing hot spots in the Southern Ocean: processes, parameterisations and impacts (2014 - 2016)$394,585
Description
The Southern Ocean plays a critical role for the uptake of heat and carbon dioxide from the atmosphere into the deep ocean. This uptake depends strongly on mixing processes due to ocean eddies, which are especially important in regions of steep topography, leading to localised mixing hot spots. These ocean eddies have scales of 10-100km and therefore cannot be resolved in current global climate models. This study will examine these mixing processes using a combination of observations and innovative modelling approaches. This knowledge will be used to improve the representation of eddy processes in state-of-the-art climate models, which will ultimately allow Australia to more effectively respond to the challenge of climate change.
Funding
Australian Research Council ($394,585)
Scheme
Fellowship-Discovery Early Career Researcher Award
Administered By
University of Tasmania
Research Team
Klocker A
Period
2014 - 2016
Grant Reference
DE140100076
Turbulence and mixing in the Southern Ocean (2014)$0
Description
The Southern Ocean plays a key role in the global ocean circulation and climate. This is, to a large extent, owing to turbulent motions at a wide range of scales from mesoscale eddies at 10-100 km to internal wave breaking at 10-100 m scales. Turbulent motions enhance stirring and mixing of tracers and hence facilitate the uptake, transport, and storage of heat, carbon, and nutrients in global ocean. Topographic features, such as ridges and abyssal hills, effectively catalyse the generation of turbulent motions, creating localised hot spots of eddy stirring and turbulent mixing. The Southern Ocean turbulent processes remain poorly' understood and inadequately represented in global models.The goal of this project is to explore turbulent processes in regions of major topographic features in the Southern Ocean and to improve their representation in global ocean and climate models.
Funding
National Computational Infrastructure ($0)
Scheme
Merit Allocation Scheme
Administered By
University of Tasmania
Research Team
Nikurashin M; Klocker A
Year
2014

Research Supervision

If you are thinking of undertaking a PhD and have a strong track record, feel free to discuss ideas with Andreas. There are many potential projects listed on the Quantitative Marine Science (QMS) and Quantitative Antarctic Science (QAS) websites, but if you have your own ideas contact Andreas to discuss.

Current

4

Current

DegreeTitleCommenced
PhDModelling Oceanic Transport of Planktonic Species in the Southern Ocean2014
PhDClosing the Energy Cycle in Global Ocean Models2015
PhDQuantifying Key Physical Processes Responsible for Ocean Warming under Antarctic Ice Shelves2015
PhDThe Evolving Paleo-Bathymetry of the Southern Ocean2017