Biography

My primary research addresses the circulation, processes and dynamics of the polar oceans, the most critical part of the global climate system. They are not only the most sensitive region to change (we are likely to observe climate changes first there) but they also host most of the processes that determine the variability of our climate on anything longer than a monthly time scale. However the polar oceans are one of the least understood physical systems on our planet. The processes that occur there are not included in the global climate models we are using to drive policy decisions. There is an urgent need for fundamental scientific research in polar ocean processes. I am heavily involved in project planning for the International Polar Year (IPY, 2007-2009) on behalf of the global community.

We were the first to identify the Scotia Sea as a region where much of the global deep ocean mixing is located (Heywood et al., 2002, Nature) and the subsequently developed techniques to measure this mixing more directly (Naveira Garabato et al., 2003, Science). This is of fundamental importance to the closure of the global thermohaline circulation. We showed that the Southern Ocean mixing is intimately linked to the roughness of the topography. The next step is to understand why this is, and to investigate the importance of dynamical processes such as internal waves, lee waves, meanders and eddies, the interaction of the mean and eddy flow with topography.

I identified the fate of the front that is pinned to the Antarctic continental slope (the Antarctic Slope Front), and locate the origin of the Weddell Front, that divides the Weddell Sea water from that of the Antarctic Circumpolar Current. The questions raised by that work led to my most recent grant (ADELIE) with a research cruise in February 2007 on the RRS James Clark Ross. We are undertaking a deployment of surface drifters and Argo floats, together with a hydrographic section, at the tip of the Antarctic Peninsula.

Further understanding of the processes on the polar continental shelf and slope, and the interaction with sea ice and ice shelves, is a focus of both current and future research. We use the stable isotopes of oxygen in seawater to quantify the oceanic freshwater budget. A current project is studying the influence of ice melt in the East Greenland shelf and the Fimbul ice shelf. A complementary study used a coupled climate model HadCM3 to undertake an experiment where a large freshwater melting event occurred from Antarctica and showed a significant global climate impact, disproving the popular belief that the Southern Ocean is too remote to affect European climate. 

Website: http://www.uea.ac.uk/env/people/perspages/Karen

 

PhD Positions

Click here for current PhD opportunities in the School of Environmental Sciences. However, feel free to email me to discuss projects outside these areas and alternative sources of funding.

 

All Publications

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Thompson, A., Lazar, A., Buckingham, C., Naveira Garabato, A. C., Damerell, G., Heywood, K.

(2016)

Open-ocean submesoscale motions: A full seasonal cycle of mixed layer instabilities from gliders

in Journal of Physical Oceanography

46.

pp. 1285–1307

Full Text UEA Repository

(Article)


Buckingham, C., Naveira Garabato, A. C., Thompson, A., Brannigan, L., Lazar, A., Marshall, D. P., Nurser, A. G., Damerell, G., Heywood, K., Belcher, S. E.

(2016)

Seasonality of submesoscale flows in the ocean surface boundary layer

in Geophysical Research Letters

43.

pp. 2118–2126

Full Text UEA Repository

(Article)


Queste, B., Fernand, L., Jickells, T., Heywood, K., Hind, A.

(2016)

Drivers of summer oxygen depletion in the central North Sea.

in Biogeosciences

13.

pp. 1209-1222

Full Text UEA Repository

(Article)


Damerell, G., Heywood, K., Thompson, A., Binetti, U., Kaiser, J.

(2016)

The vertical structure of upper ocean variability at the Porcupine Abyssal Plain during 2012-2013

in Journal of Geophysical Research - Oceans

121.

pp. 3075–3089

Full Text UEA Repository

(Article)


Liblik, T., Karstensen, J., Testor, P., Alenius, P., Hayes, D., Ruiz, S., Heywood, K., Pouliquen, S., Mortier, L., Mauri, E.

(2016)

Potential for an underwater glider component as part of the Global Ocean Observing System

in Methods in Oceanography

17.

pp. 50-82

Full Text UEA Repository

(Article)


Biddle, L. C., Kaiser, J., Heywood, K. J., Thompson, A., Jenkins, A.

(2015)

Ocean glider observations of iceberg-enhanced biological production in the northwestern Weddell Sea: Iceberg enhanced production

in Geophysical Research Letters

42.

pp. 459-465

Full Text UEA Repository

(Article)


Heuzé, C., Heywood, K. J., Stevens, D. P., Ridley, J. K.

(2015)

Changes in global ocean bottom properties and volume transports in CMIP5 models under climate change scenarios

in Journal of Climate

28.

pp. 2917–2944

Full Text UEA Repository

(Article)


Queste, B. Y., Heywood, K. J., Smith, W. O., Kaufman, D. E., Jickells, T. D., Dinniman, M. S.

(2015)

Dissolved oxygen dynamics during a phytoplankton bloom in the Ross Sea polynya

in Antarctic Science

27.

pp. 362-372

Full Text UEA Repository

(Article)


Youngs, M. K., Thompson, A. F., Flexas, M. M., Heywood, K. J.

(2015)

Weddell Sea Export Pathways from Surface Drifters

in Journal of Physical Oceanography

45.

pp. 1068-1085

Full Text UEA Repository

(Article)


Heuzé, C., Ridley, J. K., Calvert, D., Stevens, D. P., Heywood, K. J.

(2015)

Increasing vertical mixing to reduce Southern Ocean deep convection in NEMO3.4

in Geoscientific Model Development

8.

pp. 3119-3130

Full Text UEA Repository

(Article)


Heywood, K. J., Schmidtko, S., Heuzé, C., Kaiser, J., Jickells, T. D., Queste, B. Y., Stevens, D. P., Wadley, M., Thompson, A. F., Fielding, S., Guihen, D., Creed, E., Ridley, J. K., Smith, W.

(2014)

Ocean processes at the Antarctic continental slope

in Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences

372.

Full Text UEA Repository

(Article)


Wadley, M. R., Jickells, T. D., Heywood, K. J.

(2014)

The role of iron sources and transport for Southern Ocean productivity

in Deep Sea Research Part I: Oceanographic Research Papers

87.

pp. 82-94

Full Text UEA Repository

(Article)


Webber, B. G. M., Matthews, A. J., Heywood, K. J., Kaiser, J., Schmidtko, S.

(2014)

Seaglider observations of equatorial Indian Ocean Rossby waves associated with the Madden-Julian Oscillation

in Journal of Geophysical Research - Oceans

119.

pp. 3714-3731

Full Text UEA Repository

(Article)


Inall, M., Murray, T., Cottier, F. R., Scharrer, K., Boyd, T., Heywood, K., Bevan, S.

(2014)

Oceanic heat delivery via Kangerdlugssuaq Fjord to the south-east Greenland ice sheet

in Journal of Geophysical Research

119.

pp. 631–645

Full Text UEA Repository

(Article)


Matthews, A., Baranowski, D., Heywood, K., Flatau, P., Schmidtko, S.

(2014)

The surface diurnal warm layer in the Indian Ocean during CINDY/DYNAMO

in Journal of Climate

27.

pp. 9101–9122

Full Text UEA Repository

(Article)


Schmidtko, S., Heywood, K. J., Thompson, A. F., Aoki, S.

(2014)

Multidecadal warming of Antarctic waters

in Science

346.

pp. 1227-1231

Full Text UEA Repository

(Article)


Guihen, D., Fielding, S., Murphy, E. J., Heywood, K. J., Griffiths, G.

(2014)

An assessment of the use of ocean gliders to undertake acoustic measurements of zooplankton: the distribution and density of Antarctic krill (Euphausia superba) in the Weddell Sea.: Measurement of zooplankton from a glider

in Limnology and Oceanography: Methods

12.

pp. 373-389

Full Text UEA Repository

(Article)


Kaufman, D. E., Friedrichs, M. A., Smith, W. O., Queste, B. Y., Heywood, K. J.

(2014)

Biogeochemical variability in the southern Ross Sea as observed by a glider deployment

in Deep Sea Research Part I: Oceanographic Research Papers

92.

pp. 93-106

Full Text UEA Repository

(Article)


Thompson, A. F., Heywood, K. J., Schmidtko, S., Stewart, A. L.

(2014)

Eddy transport as a key component of the Antarctic overturning circulation

in Nature Geoscience

7.

pp. 879-884

Full Text UEA Repository

(Article)


Smith, W., Goetz, K., Kaufman, D., Queste, B., Asper, V., Costa, D., Dinniman, M., Friedrichs, M., Hofmann, E., Heywood, K., Klink, J., Kohut, J., Lee, C.

(2014)

Multiplatform, Multidisciplinary Investigations of the Impacts of Modified Circumpolar Deep Water in the Ross Sea, Antarctica

in Oceanography

27.

pp. 180-185

Full Text UEA Repository

(Article)


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Key Research Interests

Physical Oceanography. Ocean circulation, its role in climate, and the interactions between atmosphere, ocean, cryosphere and biosphere. Stable isotope oceanography, particularly interaction with sea ice and glacial ice; ocean mixing; forcing and dynamics of fronts and circulation; satellite altimetry, particularly of eddies.

Significant Publications

  • Heywood, K.J., Stevens, D.P. (2007) Meridional heat transport across the Antarctic Circumpolar Current by the Antarctic Bottom Water overturning cell, Geophysical Research Letters 34(11), L11610. DOI: 10.1029/2007GL030130
  • Heywood, K.J., A.C. Naveira Garabato & D.P. Stevens (2002) High mixing rates in the abyssal Southern Ocean, Nature, 415, 1011-1014. DOI: 10.1038/4151011a
  • Heywood, K. J. & B.A. King (2002) Water masses and baroclinic transports in the South Atlantic and Southern oceans, Journal of Marine Research, 60 (5), 639-676. DOI: 10.1357/002224002762688687
  • Oliver, K.I.C. & K.J. Heywood (2003) Heat and freshwater fluxes through the Nordic Seas, Journal of Physical Oceanography, 33, 1009-1026.  DOI: 10.1175/1520-0485(2003)033<1009:HAFFTT>2.0.CO;2
  • Heywood, K. J., A.C. Naveira Garabato, D.P. Stevens & R.D. Muench (2004) On the fate of the Antarctic Slope Front and the origin of the Weddell Front, Journal of Geophysical Research, 109, C06021,doi:10.1029/2003JC002053.
  • Richardson, G., M.R. Wadley, K.J. Heywood, D.P. Stevens and H.T. Banks (2005) Short-term climate response to a freshwater pulse in the Southern Ocean, Geophysical Research Letters, 32, L03702, doi: 10.1029/2004GL021586.

Publications: EPrints Digital Repository

Royal Society Summer Exhibit Web Page: www.salt-oceans.tumblr.com

Key Responsibilities

  • Joint Sector Head - Marine and Atmospheric Sciences