University of Wisconsin-Milwaukee
Department of Mathematical Sciences
Atmospheric Sciences Group
P. O. Box 413, Milwaukee, WI 53201
kravtsov@uwm.edu; (414)-229-4863

• DOB: June 28, 1971; married; Russian citizen; permanent US resident.

• 1998 Ph.D., Physical Oceanography, Florida State University, Florida.
• 1993 M.S., Applied Mathematics and Physics. Moscow Institute of Physics and Technology, Russia.
• 1991 B.S., Physics and Mathematics, Moscow Institute of Physics and Technology, Russia.

• 2005 – present Assistant Professor, University of Wisconsin-Milwaukee.
• 2002 – 2005 Research Scientist, Institute of Geophysics and Planetary Physics, Department of Atmospheric and Oceanic Sciences, UCLA.
• 1999 – 2001 Postdoctoral Researcher, Institute of Geophysics and Planetary Physics, Department of Atmospheric and Oceanic Sciences, UCLA.

Atmospheric Sciences, Physical Oceanography, Sea-Ice Dynamics, Climate Dynamics, Large Scale Atmosphere–Ocean–Sea-Ice Interaction, Statistical Methods, Remote Sensing and Applications.

1. Kravtsov, S., W. K. Dewar, M. Ghil, J. C. McWilliams, and P. Berloff, 2008: A mechanistic model of mid-latitude decadal climate variability. Physica D, 237, 584–599, doi:10.1016/j.physd.2007.09.025.
2. Kravtsov, S., and C. Spannagle, 2008: Multi-decadal climate variability in observed and simulated surface temperatures. J. Climate, 21, 1104–1121.
3. Kravtsov, S., W. K. Dewar, P. Berloff, J. C. McWilliams, and M. Ghil, 2008: North Atlantic climate variability in coupled models and data. Nonlin. Proc. Geophys., 15, 13­–24.
4. Tsonis, A. A., K. Swanson, and S. Kravtsov, 2007: A new dynamical mechanism for major climate shifts. Geophys. Res. Lett., 34, L13705, doi:10.1029/2007GL030288.
5. Kravtsov, S., W. K. Dewar, P. Berloff, J. C. McWilliams, and M. Ghil, 2007: A highly nonlinear coupled mode of decadal variability in a mid-latitude ocean–atmosphere model. Dyn. Atmos. Oceans, 43, 123–150, doi:10.1016/j.dynatmoce.2006.08.001.
6. Berloff, P., S. Kravtsov, W. K. Dewar, and J. C. McWilliams, 2007: Ocean eddy dynamics in a coupled ocean–atmosphere model. J. Phys. Oceanogr., 37, 1103–1121.
7. Kravtsov, S., P. Berloff, W. K. Dewar, M. Ghil, and J. C. McWilliams, 2006: Dynamical origin of low-frequency variability in a highly nonlinear mid-latitude coupled model. J. Climate, 19, 6391–6408.
8. Kondrashov, D., S. Kravtsov, and M. Ghil, 2006: Empirical mode reduction in a model of extratropical low-frequency variability. J. Atmos. Sci., 63,1859–1877.
9. Kravtsov, S., A. W. Robertson, and M. Ghil, 2006: Multiple regimes and low-frequency oscillations in the Northern Hemisphere’s zonal-mean flow. J. Atmos. Sci., 63, 840–860.
10. Kondrashov, D., S. Kravtsov, A. W. Robertson, and M. Ghil, 2005: A hierarchy of data-based ENSO models. J. Climate, 18, 4425–4444.
11. Kravtsov, S., D. Kondrashov, and M. Ghil, 2005: Multi-level regression modeling of nonlinear processes: Derivation and applications to climatic variability. J. Climate, 18, 4404–4424.
12. Kravtsov, S., A. W. Robertson, and M. Ghil, 2005: Bimodal behavior in the zonal mean flow of a baroclinic beta-channel model. J. Atmos. Sci., 62,1746–1769.
13. Kravtsov, S., and M. Ghil, 2004: Interdecadal variability in a hybrid coupled ocean–atmosphere–sea-ice model. J. Phys. Oceanogr., 34, 1756–1775.
14. Kravtsov, S. V., A. W. Robertson, and M. Ghil, 2003: Low-frequency variability in a baroclinic!-channel model with land–sea contrast. J. Atmos. Sci., 18, 2267–2293, 409TSTS56.
15. Kravtsov, S. V., and W. K. Dewar, 2003: On the role of thermohaline advection and sea ice in glacial transitions. J. Geophys. Res. Oceans, 108, 3203–3221, 2002JC001439.
16. Kravtsov, S. V., and A. W. Robertson, 2002: Midlatitude ocean–atmosphere interaction in an idealized coupled model. Clim. Dyn., 19, 693–711.
17. Kravtsov, S. V., and A. W. Robertson, 2001: On midlatitude ocean–atmosphere interaction in a simple coupled model. CLIVAR Exchanges, 19.
18. Kravtsov, S. V., 2000: Sea ice and climate. Part II: Model climate sensitivity to perturbations of the hydrological cycle. J. Climate, 13, 463–487.
19. Kravtsov, S. V., and W. K. Dewar, 1998: Multiple equilibria and transitions in a coupled ocean–atmosphere box model. J. Phys. Oceanogr., 28, 389–397.
20. Kravtsov, S. V., 1998: Sea Ice and Climate Sensitivity. PhD Thesis, Department of Oceanography, Florida State University.

(available from www.uwm.edu/~kravtsov/publications/)

1. Kravtsov, S., D. Kondrashov, I. Kamenkovich, and M. Ghil, 2008: Empirical stochastic model of sea-surface temperature dependent surface wind over the Southern Ocean. J. Tech, sub judice.
2. Kravtsov, S. and A. A. Tsonis, 2008: How much of global warming is due to natural climate variability? Submitted to J. Climate.
3. Kravtsov, S., Hoeve, J. E. T., S. B. Feldstein, S. Lee, and S.-W. Sun, 2008: The relationship between statistically linear and nonlinear feedbacks and zonal-mean flow variability in an idealized climate model. Submitted to J. Atmos. Sci.
4. Hogg, A., W. K. Dewar, P. Berloff, and S. Kravtsov, 2008: The effect of mesoscale ocean–atmosphere coupling on the midlatitude ocean circulation. Submitted to J. Climate.
5. Strounine, K., S. Kravtsov, D. Kondrashov, and M. Ghil, 2008: Reduced models of extratropical low-frequency variability. Physica D, to be submitted.
6. Kravtsov, S., M. Ghil, and D. Kondrashov, 2008: Empirical Model Reduction and the Modeling Hierarchy in Climate Dynamics and the Geosciences. In: Stochastic Physics and Climate Modeling, T. Palmer and P. Williams, Eds., Cambridge University Press.
7. Hanrahan, J. L., S. Kravtsov, and P. J. Roebber, 2008: Quasi-periodic decadal cycles in levels of lakes Michigan and Huron. Geophys. Res. Lett., submitted.

A. Hogg (ANU), S. Lee (PSU), S. B. Feldstein (PSU), G. Branstator (NCAR), A. Tsonis (UWM), M. Ghil (post-doc advisor, UCLA), W. Dewar (graduate advisor, FSU), A. Robertson (IRI, Columbia University), J. McWilliams (IGPP, UCLA), P. Berloff (WHOI), D. Kondrashov (IGPP, UCLA), I. Kamenkovich (UW, Seattle), J. Marotzke (University of Southampton, UK).

Graduate Students
J. Hanrahan, N. Schwartz, N. Jamison, T. Dharshana, V. Krishnaiah, C. Spannagle (MS, 12/2007), K. Strunin (PhD, 04/2007).

Current and Pending Grant Support

1. Ocean–atmosphere interaction over the Southern Ocean: Satellite data and stochastic models (as co-PI, w/M. Ghil as PI), NASA – Ocean and Ice, 2005–2008 ($476,428, 2-mo summer).
2. Effects of eddies onto decadal variability of large-scale ocean currents and climate. UWM Research Growth Initiative, 2006–2007 ($119,586; 1-mo acad. yr).
3. Collaborative Research: Regional climate-change projections through next-generation empirical and dynamical models. DOE, 2007–2010 ($207,088; 1-mo summer).
4. Stochastic mode reduction in prototype climate models. UWM Research Growth Initiative, 2007–2008 ($56,886; 1-mo. acad. yr.).
5. Collaborative Research: Study of climate variability using highly resolved models. NSF, 2009–2012 (pending; $280,056; 2-mo summer).