Dr Helen Johnson

Royal Society University Research Fellow


Research Theme
Environment, oceans and climate

Research Area
Physical Oceanography

TelephoneSearch the directory
Email:Helen.Johnson@earth.ox.ac.uk
Homepage:
http://www.earth.ox.ac.uk/~helenj
Web Link:
Publications list with abstracts

Research Profile

My research is focused on understanding ocean circulation and the role it plays in climate. In particular, I am interested in the Atlantic thermohaline circulation, its variability and its connection to the polar oceans. I try to use the full range of tools available to physical oceanographers, applying theoretical ideas, simple and state-of-the-art computer models, and analysis of observational data to a wide range of ocean dynamics problems.

I am part of the exciting new Oxford Physical Oceanography group, a joint initiative between Earth Sciences and Atmosphere, Ocean and Planetary Physics.  We are always interested in hearing from individuals with a strong background in Physics or Mathematics who may wish to join us as Research Fellows, Postdoctoral Researchers or Graduate Students.

Teaching Profile

Planet Earth - Physical Climate System (1st year)

Physical Oceanography (3rd year)

Topics in Oceanography (4th year)

Selected Publications (Extended Publications)

  • Zhai, X, Johnson, HL, Marshall, DP, (2011) 'A model of Atlantic heat content and sea level change in response to thermohaline forcing', Journal of Climate. pp. 5619-5632
  • Munday, DR, Allison, LC, Johnson, HL, Marshall, DP, (2011) 'Remote forcing of the Antarctic Circumpolar Current by diapycnal mixing', GEOPHYS RES LETT. pp. doi: 10.1029/2011GL046849
  • Johnson, HL, Munchow, A, Falkner, KK, Melling, H, (2011) 'Ocean circulation and properties in Petermann Fjord, Greenland', J GEOPHYS RES-OCEANS. pp. doi: 10.1029/2010JC006519
  • Czeschel, L, Marshall, DP, Johnson, HL, (2010) 'Oscillatory sensitivity of Atlantic overturning to high-latitude forcing', GEOPHYS RES LETT. pp. doi: 10.1029/2010GL043177
  • Kanzow, T, Johnson, HL, Marshall, DP, Cunningham, SA, Hirschi, JJM, Mujahid, A, Bryden, HL, Johns, WE, (2009) 'Basinwide Integrated Volume Transports in an Eddy-Filled Ocean', J PHYS OCEANOGR. pp. 3091-3110 doi: 10.1175/2009JPO4185.1
  • Johnson, HL, Marshall, DP, Sproson, DAJ, (2007) 'Reconciling theories of a mechanically driven meridional overturning circulation with thermohaline forcing and multiple equilibria', CLIM DYNAM. pp. 821-836 doi: 10.1007/s00382-007-0262-9
  • Johnson, HL, Marshall, DP, (2002) 'A theory for the surface Atlantic response to thermohaline variability', J PHYS OCEANOGR. pp. 1121-1132 doi: 10.1175/1520-0485%282002%29032%3C1121%3AATFTSA%3E2.0.CO%3B2
  • Johnson, HL, Marshall, DP, (2002) 'Localization of abrupt change in the North Atlantic thermohaline circulation', GEOPHYS RES LETT. pp. 7-1 doi: 10.1029/2001GL014140
  • Marshall, J, Johnson, H, Goodman, J, (2001) 'A study of the interaction of the North Atlantic oscillation with ocean circulation', J CLIMATE. pp. 1399-1421 doi: 10.1175/1520-0442%282001%29014%3C1399%3AASOTIO%3E2.0.CO%3B2

Other Information