Rodrigo Caballero   Climate dynamics research group

I am a professor at the Department of Meteorology in Stockholm University. My research group explores the multifarious ways in which atmospheric dynamics—from planetary-scale waves to the motion of individual cloud droplets—helps shape past, present and future climates. We do this using a combination of simple models, full-complexity general circulation models, observational data analysis and statistical modelling. We enjoy close links with the Bolin Center for Climate Research and the Swedish e-Science Research Centre.


News

26 Jul 2016: Our recent study on co-occurring extreme events was highligted in the AGU blog.

4 May 2016: Joy Merwin Monteiro will soon be joining the group as a postdoc, working on further developement of CliMT among other things.


Selected recent publications

Shaw, T. A., M. Baldwin, E. A. Barnes, R. Caballero, C. I. Garfinkel, Y.-T. Hwang, C. Li, P. A. O'Gorman, G. Rivière, I. R. Simpson, and A. Voigt.:
Understanding storm tracks and their response to climate change. Nat. Geosci.,  9, 656-664. DOI: 10.1038/NGEO2783.

Messori, G., R. Caballero and M. Gaetani (2016):
On cold spells in North America and storminess in Europe. Geophys. Res. Lett., 43, 6620-6628.

Woods, C. and R. Caballero (2016): The role of moist intrusions in winter Arctic warming and sea ice decline J. Clim., 29, 4473-4485.

Full list of publications

About


I was born in Spain to parents eager to see the world and my early years were geographically diverse, with stops in Peru and Britain before settling in Italy. I studied physics at La Sapienza University in Rome, obtaining a doctoral degree there specializing in atmospheric dynamics under the guidance of Alfonso Sutera. Afterwards I continued the itinerant family tradition and moved on to positions in Copenhagen, Chicago, Dublin and finally Stockholm.

A more formal CV:

Education

1998  PhD in Physics, La Sapienza University, Rome, Italy.
1994  Laurea in Physics, La Sapienza University, Rome, Italy.

Employment

2011—          Professor, Department of Meteorology (MISU), Stockholm University, Sweden.
2005—2010  Lecturer (with tenure), School of Mathematical Sciences, University College Dublin, Ireland.
2003—2005  Postdoctoral Research Associate, Department of the Geophysical Sciences, University of Chicago, USA.
1999—2002  Postdoctoral Research Associate, Danish Center for Earth System Science, University of Copenhagen, Denmark.
1997—1998  Research Associate, Department of Geophysics, University of Copenhagen, Denmark.
1994—1996  Research Assistant, Department of Physics, University of Camerino, Italy.


Research group

Current members:

Henrik Carlson, PhD student, superrotation in warm climates.
Antonios Dimitrelos, PhD student, Arctic clouds, LES.
Joy Merwin Monteiro, Postdoc, tropical climate dynamics, CliMT development.
Francesco Pausata, postdoc, volcanos and climate.
Cian Woods, PhD student, high-latitude circulation and moisture transport.

Former members:

John Hanley, PhD 2013, extreme storms and large-scale flow. Now at MunichRe.
Marcus Löfverström, PhD 2014, stationary waves and ice sheets. Now a postdoc at NCAR.
Gabriele Messori, postdoc 2014-2015 extreme events. Now a staff scientist at UK MetOffice.
Gaetano Sardina, postdoc 2014-2016, cloud turbulence and microphysics. Now at KTH.

Publications

Book

Rodrigo Caballero (2014): Physics of the Atmosphere. IOP Publishing, Bristol.

Papers

Under review

Harnik, N, G. Messori, R. Caballero, S. B. Feldstein:
The Circumglobal North American wave pattern and its relation to North American cold events. Submitted.

Lunt, D. J., Huber, M., Baatsen, M. L. J., Caballero, R., DeConto, R., Donnadieu, Y., Evans, D., Feng, R., Foster, G., Gasson, E., von der Heydt, A. S., Hollis, C. J., Kirtland Turner, S., Korty, R. L., Kozdon, R., Krishnan, S., Ladant, J.-B., Langebroek, P., Lear, C. H., LeGrande, A. N., Littler, K., Markwick, P., Otto-Bliesner, B., Pearson, P., Poulsen, C., Salzmann, U., Shields, C., Snell, K., Starz, M., Super, J., Tabour, C., Tierney, J., Tourte, G. J. L., Upchurch, G. R., Wade, B., Wing, S. L., Winguth, A. M. E., Wright, N., Zachos, J. C., and Zeebe, R.:
DeepMIP: experimental design for model simulations of the EECO, PETM, and pre-PETM. Geosci. Model Dev. Discuss., doi:10.5194/gmd-2016-127.

von der Heydt, A, H. A. Dijkstra, R. S. W. van de Wal, R. Caballero, M. Crucifix, G. Foster, M. Huber, P. Köhler, E. Rohling, P. J. Valdes, P. Ashwin, S. Bathiany, T. Berends, L. van Bree, P. Ditlevsen, M. Ghil, A. Haywood, J. Katzav, G. Lohmann, J. Lohmann, V. Lucarini, A. Marzocchi, H. Pälike, I. Ruvalcaba Baroni, D. Simon, A. Sluijs, L. B. Stap, A. Tantet, J. Viebahn, M. Ziegler:
Lessons on climate sensitivity from past climate changes. Submitted.

2016

Lindvall, J., G. Svensson and R. Caballero (2016):
The impact of changes in parameterizations of surface drag and vertical diffusion on the large-scale circulation in the Community Atmosphere Model (CAM5). Clim. Dyn, in press.

Pausata, F.S.R, C. Karamperidou, R. Caballero and D. S. Battisti (2016):
ENSO response to high-latitude volcanic eruptions: the role of the initial conditions. Geophys. Res. Lett., in press.

Shaw, T. A., M. Baldwin, E. A. Barnes, R. Caballero, C. I. Garfinkel, Y.-T. Hwang, C. Li, P. A. O'Gorman, G. Rivière, I. R. Simpson, and A. Voigt.:
Understanding storm tracks and their response to climate change. Nat. Geosci., 9, 656-664. DOI: 10.1038/NGEO2783.

Messori, G., R. Caballero and M. Gaetani (2016):
On cold spells in North America and storminess in Europe. Geophys. Res. Lett., 43, 6620-6628.

Löfverström, M., R. Caballero, J. Nilsson and G. Messori (2016):
Response of the North Atlantic atmospheric circulation to increasing glacial ice-sheet elevation. J. Atmos. Sci., 73, 3329-3342.

Carlson, H. and R. Caballero (2016):
Enhanced MJO and transition to superrotation in warm climates. J. Adv. Model. Earth Syst., 8, 304-318.

Woods, C. and R. Caballero (2016):
The role of moist intrusions in winter Arctic warming and sea ice decline. J. Clim., 29, 4473-4485.

2015

Sardina, G., F. Picano, L. Brandt and R. Caballero (2015):
Continuous growth of droplet size variance due to condensation in turbulent clouds. Phys. Rev. Lett., 115, 184501.

Messori, G. and R. Caballero (2015):
On double Rossby wave breaking in the North Atlantic. J. Geophys. Res. Atmos., 120, 11129-11150.

Pausata, F.S.R., L. Chafik, R. Caballero and D. S. Battisti (2015):
Impacts of high-latitude volcanic eruptions on AMOC and ENSO. Proc. Natl. Acad. Sci. USA, 112, 13784-13788

Pausata, F.S.R., A. Grini, R. Caballero, A. Hannachi and O. Seland (2015):
High-latitude volcanic eruption in the Norwegian Earth System Model: the effect of different initial conditions and of the ensemble size. Tellus B, 67, 26728.

2014

Heifetz, E. and R. Caballero (2014):
An alternative view on the role of the β effect in the Rossby wave propagation mechanism. Tellus A, 66, 22672.

Pinto, J., I. Gómara, G. Masato, H. Dacre, T. Woollings and R. Caballero (2014):
Large-scale dynamics associated with clustering of extratropical cyclones affecting Western Europe. J. Geophys. Res. Atmos., 119, 13704-13719.

Löfverström, M., R. Caballero, J. Nilsson, and J. Kleman (2014):
Evolution of the large-scale atmospheric circulation in response to changing ice sheets over the last glacial cycle Clim. Past, 10, 1453-1471.

Tartaglione, N. and R. Caballero (2014):
A numerical study of the windstorm Klaus: Sensitivity to sea surface temperature Ann. Geophys., 57, A0540.

2013

Caballero, R. and M. Huber (2013):
State-dependent climate sensitivity in past warm climates and its implications for future climate projections. Proc. Natl. Acad. Sci. USA, 110, 14162-14167.
— See also: Commentary by Ray Pierrehumbert.

Woods, C., R. Caballero and G. Svensson (2013):
Large scale circulation associated with moisture intrusions into the Arctic during winter. Geophys. Res. Lett., 40, 4717-4721.

Goldner, A., M. Huber and R. Caballero (2013):
Does Antarctic glaciation cool the world? Clim. Past, 9, 173-189.

Kleman, J., J. Fastook, K. Ebert, J. Nilsson and R. Caballero (2013):
Pre-LGM Northern Hemisphere ice sheet topography. Clim. Past, 9, 2365-2378.

de Boer, A., A. Collier and R. Caballero (2013):
Processes driving thunderstorms over the Agulhas Current. J. Geophys. Res. Atmos., 118, 2220-2228.

Neu U., M.G. Akperov, N. Bellenbaum, R. Benestad, R. Blender, R. Caballero, A. Cocozza, H.F. Dacre, Y. Feng, K. Fraedrich, J. Grieger, S. Gulev, J. Hanley, T. Hewson, M. Inatsu, K. Keay, S.F. Kew, I. Kindem, G.C. Leckebusch, M.L.R. Liberato, P. Lionello, I.I. Mokhov, J.G. Pinto, C.C. Raible, M. Reale, I. Rudeva, M. Schuster, I. Simmonds, M. Sinclair, M. Sprenger, N.D. Tilinina, I.F. Trigo, S. Ulbrich, U. Ulbrich, X.L. Wang, H. Wernli (2013):
IMILAST - a community effort to intercompare extratropical cyclone detection and tracking algorithms: assessing method-related uncertainties. Bull. Am. Met. Soc, 94, 529-547.

2012

Caballero, R. and J. Hanley (2012):
Midlatitude eddies, storm-track diffusivity and poleward moisture transport in warm climates. J. Atmos. Sci., 69, 3237-3250.

Hanley, J. and R. Caballero (2012):
The role of large-scale atmospheric flow and Rossby wave breaking in the evolution of extreme windstorms over Europe. Geophys. Res. Lett., 39, L21708.
— See also: Supplementary material.

Hanley, J. and R. Caballero (2012):
Objective identification and tracking of multi-centre cyclones in the ERA-Interim reanalysis dataset. Quart. J. Roy. Meteorol. Soc., 138, 612-625.

2011

Mitchell, J.L., M. Ádámkovics, R. Caballero and E.P. Turtle (2011):
Locally enhanced precipitation organized by planetary-scale waves on Titan. Nature Geosci., 4, 589-592.
See also:
Supplementary material.
News and Views feature by Tetsuya Tokano.

Goldner, A., M. Huber, N. Diffenbaugh and R. Caballero (2011):
Implications of the permanent El Niño teleconnection "blueprint" for past global and North American hydroclimatology. Clim. Past, 7, 723-743.

Huber, M. and R. Caballero (2011):
The early Eocene equable climate problem revisited. Clim. Past, 7, 603-633.

Caballero, R. and P. Lynch (2011):
Climate modelling and deep-time climate change. In: T.R. Hodkinson, M.B. Jones, S. Waldren and J.A.N. Parnell (eds.), Climate Change, Ecology and Systematics. Systematics Association Special Series, Cambridge University Press.

2010

Caballero, R. and M. Huber (2010):
Spontaneous transition to superrotation in warm climates simulated by CAM3. Geophys. Res. Lett., 37, L11701.

Hazeleger, W. Wang X, Severijns C, Stefanescu S, Yang S, Wang X, Wyser K, Dutra E, Baldasano JM, Bintanja R, Bougeault P, Caballero R, Ekman AML, Christensen JH, van den Hurk B, Jimenez P, Jones C, Kallberg P, Koenigk T, McGrath R, Miranda P, van Noije T, Palmer T, Parodi JA, Schmith T, Selten F, Storelvmo T, Sterl A, Tapamo H, Vancoppenolle M, Viterbo P, Willen U (2010):
EC-Earth: A seamless Earth system prediction approach in action. Bull. Amer. Meteor. Soc., 91, 1357-1363.

2009

Caballero, R. and B.T. Anderson (2009):
Impact of midlatitude stationary waves on regional Hadley cells and ENSO. Geophys. Res. Lett., 36, L17704.

Mitchell, J. L., R.T. Pierrehumbert, D.M.W. Frierson and R. Caballero (2009):
The impact of methane thermodynamics on seasonal convection and circulation in a model Titan atmosphere. Icarus, 203, 250-264.

2008

Caballero, R. (2008):
Hadley cell bias in climate models linked to extratropical eddy stress. Geophys. Res. Lett., 35, L18709.

Caballero, R., R.T. Pierrehumbert and J.L. Mitchell (2008):
Axisymmetric, nearly inviscid circulations in non-condensing radiative-convective atmospheres. Quart. J. Roy. Meteorol. Soc., 134, 1269-1285.

Drakakis, K., S. Rickard, J.K. Beard, R. Caballero, F. Iorio, G. O'Brien and J. Walsh (2008):
Results of the enumeration of Costas arrays of order 27. IEEE Trans. Inf. Th., 54, 4684-4687.

2007

Caballero, R. (2007):
Role of eddies in the interannual variability of Hadley cell strength. Geophys. Res. Lett. 34, L22705.

Langen, P.L. and R. Caballero (2007):
Cloud variability, radiative forcing and meridional temperature gradients in a general circulation model. Tellus A, 59, 641-649.

2006 and earlier

Mitchell, J., R.T. Pierrehumbert, D.M.W. Frierson and R. Caballero (2006):
The dynamics behind Titan's methane clouds. Proc. Natl. Acad. Sci. USA, 103, 18421-18426.

Caballero, R. and P.L. Langen (2005):
The dynamic range of poleward energy transport in an atmospheric general circulation model. Geophys. Res. Lett., 32, L02705.

Huber, M. and R. Caballero (2003):
Eocene El Niño: Evidence for robust tropical dynamics in the "hothouse". Science, 299, 877-881.

Jewson, S. and R. Caballero (2003):
Seasonality in the statistics of surface air temperature and the pricing of weather derivatives. Meteorol. App., 10, 377-389.

Jewson, S. and R. Caballero (2003):
The use of weather forecasts in the pricing of weather derivatives. Meteorol. App., 10, 367-376.

Caballero, R., S. Jewson and A. Brix (2002):
Long memory in surface air temperature: Detection, modeling, and application to weather derivative valuation. Climate Research, 21, 127-140.

Caballero, R. and A. Lavagnini (2002):
A numerical study of the sea breeze, slope winds and convergence lines around Rome. Nuovo Cimento C, 25, 287-304.

Caballero, R. (2001):
Surface wind, subcloud humidity and the stability of the tropical climate. Tellus A, 53, 513-525.

Caballero, R., R. Castegini and A. Sutera (2001):
Equilibration of a two-level primitive equation model on the sphere. Nuovo Cimento C, 24, 875-884.

Caballero, R. and A. Sutera (2000):
Equilibration of a simple baroclinic flow in a β channel and on the sphere. J. Atmos. Sci., 57, 3296-3314.

Caballero, R. (1997):
Interannual modulation of extratropical high-frequency variability. Ann. Geophys., XL, 915-922.

Malguzzi, P., A. Speranza, A. Sutera, R. Caballero (1997):
Nonlinear amplification of stationary Rossby waves near resonance, Part II. J. Atmos. Sci., 54, 2441-2451.

Malguzzi, P., A. Speranza, A. Sutera, R.Caballero (1996):
Nonlinear amplification of stationary Rossby waves near resonance, Part I. J. Atmos. Sci., 53, 298-311.

Software and on-line models


CliMT
A python-based software component toolkit providing a flexible modelling environment for climate science problems.
Download from the github site.

TOA balance
An online model that computes the surface temperature required to balance Earth's radiative budget. Built using CliMT.

Diurnal cycle
An online model that computes radiative profiles over a daily cycle for given temperature and humidity structures. Built using CliMT.

Courses


Dynamical meteorology II MO3007 [Official description] [Mondo page]
Undergraduate introduction to baroclinic instability.

Thermodynamics of the atmosphere MO3003 [Official description] [Mondo page]
Undergraduate introduction to dry and moist atmospheric thermodynamics.

Climate and the general circulation MO3008 [Official description] [Mondo page]
Undergraduate introduction to atmosphere-ocean general circulation and climate dynamics.

The general circulation [Mondo page]
PhD-level treatment of atmosphere-ocean general circulation.

Earth's climate and climate change: An introduction MO1006
Undergraduate summer course giving an introduction to Earth's climate system.