AOS Faculty Profile
Lecturer with Rank of Professor, Ph.D. Imperial College, University of London
Address: 332 GFDL / 219 Sayre Hall
Phone: (609) 452-6528 / 258-6176
Email: gkv at princeton.edu
Large-Scale Dynamics and Circulation of Both the Atmosphere and Ocean
My work varies between basic research in geophysical fluid dynamics and more applied modeling of various aspects of the ocean, atmosphere, or climate, although distinguishing between these subfields can sometimes be quite arbitrary. A common feature of my work is trying to use basic theory in conjunction with more complete numerical models to come to a more well-rounded understanding of phenomena than can be achieved with a single approach.
On the oceanic side, much of my recent work has been devoted toward trying to understand the three-dimensional structure of the wind-and-buoyancy-driven circulation, and in particular the thermocline. The effects of ventilation (or subduction), diffusion and mesoscale eddies all play a role, and disentangling their sometimes competing effects involves the use of both numerical models and theory. I’m now trying to understand the ocean’s role in climate change-- how does the ocean absorb heat in a warming planet?
On the atmospheric side, I’ve recently been looking at the nature of variability at timescales from a week to a season, and how this might be caused by the interaction of baroclinic eddies. Again, a complete understanding of this involves bringing together areas as seemingly diverse as the theory of geostrophic turbulence, wave-meanflow interaction, and general circulation modeling of the atmosphere.
Some Recent Publications:
Jucker, M, Fueglistaler, S, and Vallis, G. K. 2012. Maintenance of stratospheric structure in an idealized general circulation model J. Atmos. Sci, submitted. PDF file
Farneti, R. and Vallis, G. K. 2012. Meridional Energy Transport in the Coupled Atmosphere-Ocean system: Compensation and Partitioning J. Climate, submitted. PDF file
Nikurashin, M. and Vallis, G. K. 2012. A Theory of the Interhemispheric Deep Overturning Circulation and Associated Stratification. J. Phys. Oceanog., 42,1652-1667. PDF file
Ilicak, M. and Vallis, G. K. 2012. Simulations and scaling of horizontal convection. Tellus, A , 64, http://dx.doi.org/10.3402/tellusa.v64i0.18377. PDF file
Padilla, L., Vallis, G. K. and Rowley, C. 2011. Probabilistic estimates of transient climate sensitivity subject to uncertainty in forcing and natural variability. J. Climate , doi: 10.1175/2011JCLI3989.1
Nikurashin, M. and Vallis, G. K. 2011. A Theory of Deep Stratification and Overturning Circulation in the Ocean. J. Phys. Oceanog., v41. doi: 10.1175/2010JPO4529.1 PDF file
Zurita-Gotor, P. and Vallis, G. K. 2011. Dynamics of mid-latitude tropopause height in an idealized model. J. Atmos. Sci., (in press) PDF file
Venaille, A, Vallis, G. K. and Smith, K. S. 2011. Baroclinic turbulence in the ocean: analysis with primitive equation and quasi-geostrophic simulations. J. Phys. Oceanogr., (in press) PDF file
Xie, P. and Vallis, G. K. 2011. The Passive and Active Nature of Ocean Heat Uptake in Idealized Climate Change Experiments Climate Dynamics, DOI 10.1007/s00382-011-1063-8. PDF file
Mitchell, J. and Vallis, G. K. 2010. The transition to superrotation in terrestrial atmospheres J. Geophys. Res. (Planets), v115, E12008, doi:10.1029/2010JE003587. PDF file
Kidston, J. and Vallis, G. K. 2010. Relationship between eddy-driven jet latitude and width Geophys. Res. Lett, doi:10.1029/2010GL044849. pdf file
Vallis, G. K. and Farneti, R. 2009. Meridional Energy Transport in the Atmosphere-Ocean System. Scaling and Numerical Experiments. Quart. J. Roy. Meteor. Soc., 135, 1643-1660, doi:10.1002/qj.498. pdf file