Paul Roundy

Paul E. Roundy

Studies tropical waves of the atmosphere and ocean, El Niño/La Niña–Southern

The World Within Reach

 

Research Interests

Dr. Roundy studies waves of the tropical atmosphere and ocean and how these waves interact with one another and with atmospheric moist deep convection to modulate global weather and climate. Areas of emphasis include analysis of observations to study modulation of tropical cyclogenesis and the El Nino/Southern Oscillation (ENSO) by convectively coupled waves and intraseasonal oscillations.

Publications

Roundy, P.E., 2011: Tropical extratropical interactions, in W.K.M. Lau and D. E. Waliser, Intraseasonal Variability in the Atmosphere-Ocean Climate System. Second edition. Springer, Praxis Publishing, Chichester, UK, In Press.

Ventrice, M.J., C. D. Thorncroft, and P. E. Roundy, 2011: The Madden-Julian Oscillation’s influence on African easterly waves and downstream tropical cyclogenesis. Mon. Wea. Rev. In Press.

Roundy, P. E., and M. A. Janiga, 2011: Analysis of vertically propagating convectively coupled equatorial waves using observations and a non-hydrostatic Boussinesq model on the equatorial beta plane. Q. J. Roy. Meteor. Soc., Revisions pending review.

Verhagen, L., and P. E. Roundy, 2010: Analysis of coupling between an oceanic Kelvin wave and atmospheric convection during the winter of 1986. J. Climate, 23, 6353-6364.

Roundy, P. E., and L. Verhagen, 2010: Variations of the flow of the global atmosphere associated with a composite convectively coupled oceanic Kelvin wave. J. Climate, 23, 4192-4201.

Roundy, P. E., K. MacRitchie, J. Asuma, and T. Melino, 2010: Modulation of the Global Atmospheric Circulation by Combined Activity in the Madden Julian Oscillation and the El Niño/Southern Oscillation During Boreal Winter. J. Climate, 23, 4045- 4059.

Lin, Jia-Lin, T. Qian, H. Han, P. Roundy, and Y. Zheng, 2009: Intraseasonal variation of winter precipitation over the western United States simulated by 14 IPCC AR4 Coupled GCMs. J. Clim., 23, 3094-3119.

Lin, Jia-Lin, T. Shinoda, B. Liebmann, T. Qian, W. Han, P. Roundy, J. Zhou, Y. Zheng, 2009: Intraseasonal Variability Associated with Summer Precipitation Over South America Simulated by 14 WRCP CMIP3 Coupled GCMs Mon. Wea. Rev., 137, 2931-2954.

Roundy, P. E., and C. J. Schreck III, 2009: A combined wave-number-frequency and time-extended EOF approach for tracking the progress of modes of large-scale organized tropical convection. Q. J. Roy. Met. Soc., 135, 161-173.

Roundy, P. E., C. J. Schreck III, M. A. Janiga, 2009: Contributions of convectively coupled equatorial Rossby waves and Kelvin waves to the Real-time multivariate MJO indices. Mon. Wea. Rev., 137, 469-478.

Kiladis, G. N., M. C. Wheeler, P. T. Haertel, K. H. Straub, and P. E. Roundy, 2009: Convectively coupled equatorial waves. Rev. of Geophys., 47 RG2003, 1-42.

Roundy, P. E., and J. R. Kravitz, 2009: The association of the evolution of intraseasonal oscillations to ENSO phase. J. Climate, 22, 381-395.

Shinoda, T., P. E. Roundy, and G. N. Kiladis, 2008: Statistical representation of equatorial waves and tropical instability waves in the Pacific Ocean. Atmospheric Research, 94, 37-44.

Roundy, P. E., 2008: Analysis of convectively coupled Kelvin waves in the Indian Ocean MJO. J. Atmos. Sci.. 65,1342-1359.

Shinoda, T., P. E. Roundy, and G. N. Kiladis, 2008: Variability of intraseasonal Kelvin waves in the equatorial Pacific Ocean. J. Phys. Oceanogr., 38, 921-944.

Roundy, P. E., and G. N. Kiladis 2007: Analysis of a reconstructed Kelvin wave dynamic height dataset for the period 1974-2005. J. Climate, 20, 4341-4355.

Roundy P. E., and G. N. Kiladis, 2006: Observed relationships between oceanic Kelvin waves and atmospheric forcing. J. Climate, 19, 5253-5272.

Frank, W. M., and P. E. Roundy, 2006: The relationship between tropical waves and tropical cyclogenesis. Mon. Wea. Rev., 134, 2397-2417.

Roundy, P.E., and W.M. Frank, 2004c: Applications of a multiple linear regression model to the analysis of relationships between eastward-and westward-moving intraseasonal modes. J. Atmos. Sci., 61, 3041-3048.

Roundy, P.E., and W.M. Frank, 2004b: Effects of low-frequency wave interactions on intraseasonal oscillations. J. Atmos. Sci., 61, 3025-3040.

Roundy P. E., and W. M. Frank, 2004: A climatology of waves in the equatorial region. J. Atmos. Sci., 61, 2105-2132.

Roundy, P. E., and L. Gribble, 2010: Variations of the flow of the global atmosphere associated with a composite convectively coupled oceanic Kelvin wave. J. Climate., 23, 4192-4201.

Roundy, P. E., K. MacRitchie, J. Asuma, and T. Melino, 2010: Modulation of the Global Atmospheric Circulation by Combined Activity in the Madden Julian Oscillation and the El Nio/Southern Oscillation During Boreal Winter. J. Climate., 23, 4045-4059.