Profiles
Andreas Klocker
Andreas Klocker
Research Fellow
Room 213.14 , IMAS Hobart
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 (370803)
- Geophysical and environmental fluid flows (401208)
- Other earth sciences (379999)
- Climate change processes (370201)
- Chemical oceanography (370802)
- Oceanography (370899)
- Marine and estuarine ecology (incl. marine ichthyology) (310305)
- Biological oceanography (370801)
- Marine geoscience (370504)
- Structural geology and tectonics (370511)
- Geodynamics (370604)
- Glaciology (370902)
Research Objectives
- Understanding climate change (190599)
- Antarctic and Southern Ocean oceanic processes (180402)
- Oceanic processes (excl. in the Antarctic and Southern Ocean) (180506)
- Climate change models (190501)
- Effects of climate change on Antarctic and sub-Antarctic environments (excl. social impacts) (190503)
- Expanding knowledge in the earth sciences (280107)
- Climate variability (excl. social impacts) (190502)
- Expanding knowledge in the environmental sciences (280111)
- Assessment and management of terrestrial ecosystems (180601)
- Global effects of climate change (excl. Australia, New Zealand, Antarctica and the South Pacific) (excl. social impacts) (190507)
Publications
Total publications
40
Highlighted publications
(6 outputs)| Year | Type | Citation | Altmetrics |
|---|---|---|---|
| 2018 | Journal Article | Klocker A, 'Opening the window to the Southern Ocean: the role of jet dynamics', Science Advances, 4, (10) Article eaao4719. ISSN 2375-2548 (2018) [Refereed Article] | |
| 2014 | Journal Article | Klocker 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 - 113Web of Science - 111 | |
| 2012 | Journal Article | Klocker 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 - 72Web of Science - 71 | |
| 2010 | Journal Article | Klocker 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 - 76Web of Science - 72 | |
| 2007 | Journal Article | Schulz 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] | |
| 2005 | Journal Article | Klocker 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 - 35Web of Science - 43 |
Journal Article
(34 outputs)| Year | Citation | Altmetrics |
|---|---|---|
| 2021 | Sauermilch I, Whittaker JM, Klocker A, Munday DR, Hochmuth K, et al., 'Gateway-driven weakening of ocean gyres leads to Southern Ocean cooling', Nature Communications, 12, (1) Article 6465. ISSN 2041-1723 (2021) [Refereed Article] DOI: 10.1038/s41467-021-26658-1 [eCite] [Details] Citations: Scopus - 18Web of Science - 17 Co-authors: Sauermilch I; Whittaker JM | |
| 2020 | Bachman SD, Klocker A, 'Interaction of jets and submesoscale dynamics leads to rapid ocean ventilation', Journal of Physical Oceanography, 50, (10) pp. 2873-2883. ISSN 0022-3670 (2020) [Refereed Article] DOI: 10.1175/JPO-D-20-0117.1 [eCite] [Details] Citations: Scopus - 9Web of Science - 7 | |
| 2020 | Kiss A, McC Hogg A, Hannah N, Boeira Dias FB, Brassington GB, et al., 'ACCESS-OM2 v1.0: a global ocean-sea ice model at three resolutions', Geoscientific Model Development, 13 pp. 401-442. ISSN 1991-959X (2020) [Refereed Article] DOI: 10.5194/gmd-13-401-2020 [eCite] [Details] Citations: Scopus - 62Web of Science - 67 Co-authors: Boeira Dias FB; Domingues CM; Heil P; Marsland SJ; Nikurashin M; Savita A | |
| 2019 | Huneke WGC, Klocker A, Galton-Fenzi BK, 'Deep bottom mixed layer drives intrinsic variability of the Antarctic Slope Front', Journal of Physical Oceanography, 49 pp. 3163-3177. ISSN 0022-3670 (2019) [Refereed Article] DOI: 10.1175/JPO-D-19-0044.1 [eCite] [Details] Citations: Scopus - 4Web of Science - 4 Co-authors: Huneke WGC; Galton-Fenzi BK | |
| 2019 | Mori 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, 189 pp. 50-61. ISSN 0924-7963 (2019) [Refereed Article] DOI: 10.1016/j.jmarsys.2018.09.005 [eCite] [Details] Citations: Scopus - 7Web of Science - 7 Co-authors: Mori M; Corney SP; Melbourne-Thomas J; Kawaguchi S; Constable A | |
| 2019 | Stewart AL, Klocker A, Menemenlis D, 'Acceleration and overturning of the Antarctic Slope Current by winds, eddies, and tides', Journal of Physical Oceanography, 49, (8) pp. 2043-2074. ISSN 0022-3670 (2019) [Refereed Article] DOI: 10.1175/JPO-D-18-0221.1 [eCite] [Details] Citations: Scopus - 27Web of Science - 25 | |
| 2018 | Klocker A, 'Opening the window to the Southern Ocean: the role of jet dynamics', Science Advances, 4, (10) Article eaao4719. ISSN 2375-2548 (2018) [Refereed Article] | |
| 2018 | Schallenberg 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] Citations: Scopus - 35Web of Science - 35 Co-authors: Schallenberg C; Bestley S; Trull TW; Davies DM; Gault-Ringold M; Roden NP; Townsend AT; van der Merwe P; Westwood K; Wuttig K; Bowie A | |
| 2018 | Stewart 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 - 63Web of Science - 62 | |
| 2017 | Mori 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 - 5Web of Science - 5 Co-authors: Mori M; Corney SP; Melbourne-Thomas J; Constable A | |
| 2017 | Priester 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] Citations: Scopus - 5Web of Science - 5 Co-authors: Melbourne-Thomas J; Corney S | |
| 2016 | Groeskamp 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 - 34Web of Science - 33 | |
| 2016 | Klocker 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 - 12Web of Science - 12 | |
| 2016 | Mori 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 - 10Web of Science - 10 Co-authors: Mori M; Corney SP; Melbourne-Thomas J | |
| 2015 | Jones 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 | |
| 2014 | Klocker 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 - 113Web of Science - 111 | |
| 2014 | Klocker 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 - 40Web of Science - 39 | |
| 2014 | Palter 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 - 23Web of Science - 21 | |
| 2014 | Rosso 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 - 55Web of Science - 55 Co-authors: Strutton PG | |
| 2014 | Tulloch 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 - 51Web of Science - 47 | |
| 2013 | Abernathy 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 - 73Web of Science - 70 | |
| 2012 | Gille 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] | |
| 2012 | Klocker 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 - 72Web of Science - 71 | |
| 2012 | Klocker 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 - 62Web of Science - 60 | |
| 2011 | Williams 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 - 46Web of Science - 43 Co-authors: Williams GD; Meijers AJS; Tamura T | |
| 2010 | Klocker 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 - 15Web of Science - 13 | |
| 2010 | Klocker 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 - 76Web of Science - 72 | |
| 2010 | McDougall 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 - 26Web of Science - 23 | |
| 2010 | Meijers 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 - 81Web of Science - 75 Co-authors: Meijers AJ; Bindoff NL; Williams GD | |
| 2010 | Williams 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 - 68Web of Science - 62 Co-authors: Williams GD; Meijers AJ; Bindoff NL | |
| 2009 | Klocker 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] | |
| 2009 | Klocker 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] | |
| 2007 | Schulz 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] | |
| 2005 | Klocker 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 - 35Web of Science - 43 |
Conference Publication
(4 outputs)| Year | Citation | Altmetrics |
|---|---|---|
| 2009 | Williams 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] Co-authors: Williams GD; Meijers AJ; Tamura T | |
| 2007 | Williams 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] Co-authors: Williams GD; Marsland SJ; Meijers AJ; Nicol S; Bindoff NL | |
| 2006 | Williams 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] Co-authors: Williams GD; Marsland SJ; Bindoff NL; Nicol S; Meijers AJ | |
| 2006 | Williams 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] Co-authors: Williams GD; Marsland SJ; Meijers AJ; Nicol S; Bindoff NL |
Thesis
(2 outputs)| Year | Citation | Altmetrics |
|---|---|---|
| 2009 | Klocker A, 'Diapycnal advection by nonlinear processes in the ocean' (2009) [PhD] | |
| 2004 | Klocker A, 'Effect of the Isthmus of Panama on the sensitivity of the climate system to variations in Earth's orbital parameters' (2004) [Masters Research] |
Grants & Funding
Funding Summary
Number of grants
6
Total funding
Projects
- Description
- The rearrangement of continents over geological timescales can open new connections between the Earth's major oceans. These oceanic seaways can dramatically influence patterns of ocean circulation and are implicated in the onset and expansion of glaciation at both poles. We will use a combination of plate tectonic, solid Earth and oceanographic modelling constrained by marine datasets to deliver a transformational change in understanding how opening seaways controlled the onset of major oceanographic currents, and influenced regional and global changes in climate millions of years ago. Unravelling the influence of seaway opening compared with declining CO2 in the onset of Antarctic and Northern hemisphere glaciation will enable more accurate future climate simulations.
- Funding
- Department of Environment and Energy (Cwth) ($94,000)
- Scheme
- Grant-Australian Antarctic Science
- Administered By
- University of Tasmania
- Research Team
- Whittaker J; Klocker A
- Period
- 2019 - 2021
- 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
- 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
- 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
- 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
- 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
2
Completed
4
Current
| Degree | Title | Commenced |
|---|---|---|
| PhD | The Ocean's Role in Driving Antarctic Sea Ice Predictability | 2019 |
| PhD | How the Complexity of Continental Breakup Controls Southern Ocean Circulation | 2019 |
Completed
| Degree | Title | Completed |
|---|---|---|
| PhD | Assessing Impact of Mesoscale Eddy Processes in Coarse Resolution Ocean Models Candidate: Asher Riaz | 2021 |
| PhD | The Cenozoic Evolution of the Southern Ocean: Impact on sedimentation, ocean circulation and global climate Candidate: Isabel Sauermilch | 2020 |
| PhD | Modelling the Dynamics of the Antarctic Slope Front Candidate: Wilma Gertrud Charlotte Huneke | 2019 |
| PhD | Modelling Oceanic Transport of Planktonic Species in the Southern Ocean Candidate: Mao Mori | 2018 |