Dr John You

Madasen Building (F09), Rm 446
Phone: +61 2 9351 2003
Fax: +61 2 9351 3644
Email:

Climatology (modern climate, palaeoclimate and climate modelling); Physical Oceanography (ocean circulation, water masses, small-scale mixing process, ocean’s role in climate and palaeoceanography)

John’s current research interests include

• Addressing mechanisms of Miocene climate optimum 15 Ma as to why Miocene had a temperature about 6ºC higher than present but CO2 was only about half of present (as low as 180 ppmv). Research is conducted from vegetation, topographic elevation, ocean circulation and heat flux and greenhouse gasses.
• Energy balance in the ocean for addressing present and future climate. Present climate change is due to energy imbalance in the ocean, i.e. ocean has received extra energy from atmosphere since industrial revolution 140 years go. In the last three decades since 1980s, this tendency has been accelerating and the extra energy is yet to release back to atmosphere in next few hundreds of years. That is why if we could control the CO2 and greenhouse gasses to present level without further increase global warming will continue until equilibrium is reached. Approach is from thermal energy, mechanical energy and tidal dissipation calculation and modelling, compared with geological past warm house ocean heat content.
• Initiating an international ocean/climate program: Indonesian Throughflow: PACific Source Water INvestigation (ITF:PACSWIN) for addressing various Pacific source waters flowing into the Indonesian seas and the climate impact. Currently, a number of pilot studies have proposed. Many Pacific rim countries will join such as Australia, USA, Japan, China, Indonesia, Philippines, Korea et al.
• Other physical oceanographic studies such as 1) North Pacific Intermediate Water, 2) western equatorial Atlantic deep water masses, 3) the South Atlantic circulation and water masses, 4) the South China Sea water mass structure, 5) exchange between open ocean and marginal seas, and 6) global ocean water mass mixing

• George Harris Scholarship, D. Geology & Geophys., Usyd, 1991
• A grant-in award for doing a postdoctor in MIT, Usyd, 1992
• Invited as expert to WOCE Indian Ocean workshop, New Orleans, 1998
• Who’s who in the world since 2000
• Winner of Korea Brain Pool program for one year professorship visiting, 2006

• You, Y., 2003: The pathway and circulation of North Pacific Intermediate Water, Geophysical Research Letters, 30(24), 2291, doi: 10.1029/2003GL018561. (Pdf file)
• You, Y., J. R. E. Lutjeharms, O. Boebel, and W. P. M. de Ruijter, 2003: Quantification of the interocean exchange of intermediate water masses around southern Africa, Deep-Sea Research II, 50, 197-228. (Pdf file)
• You, Y., 2002: A global ocean climatological atlas of the Turner angle: Implications for double-diffusion and water mass structure, Deep-Sea Research I, 49, 2075-2093. (Pdf file)
• You, Y., 2002: Quantitative estimate of Antarctic Intermediate Water contributions from the Drake Passage and the southwest Indian Ocean to the South Atlantic, Journal of Geophysical Research, 107(C4), 10.1029/2001JC000880. (Pdf file)
• You, Y., N. Suginohara, M. Fukasawa, I. Yasuda, I. Kaneko, H. Yoritaka, and M. Kawamiya, 2000: Roles of the Okhotsk Sea and Gulf of Alaska in forming the North Pacific Intermediate Water, Journal of Geophysical Research, 105 (C2), 3253-3280.
• You, Y. , 1998: Rain-formed barrier layer of the western equatorial Pacific warm pool: A case study, Journal of Geophysical Research, 103(C3), 5361-5378. (Pdf file)
• You, Y., 1997: Seasonal variations of thermocline circulation and ventilation in the Indian Ocean, Journal of Geophysical Research, 102(C5), 10391-10422.
• You, Y., 1995: Salinity variability and its role in the barrier layer formation during TOGA-COARE. Journal of Physical Oceanography, 25, 2778-2807. (Pdf file)
• You, Y. and Tomczak, M., 1993: Thermocline circulation and ventilation in the Indian Ocean derived from water mass analysis. Deep-Sea Research I, 40, 13-56. (Pdf file)
• You, Y. and McDougall, T. J., 1990: Neutral surfaces and potential vorticity in the world's oceans. Journal of Geophysical Research, 95(C8), 13235-13261.