James H. Ruppert, Jr.

James H. Ruppert, Jr.

  • Assistant Research Professor
624 Walker Building
University Park, PA 16802
Email: james.ruppert@psu.edu


Google Scholar

Postdoctoral Experience

  • NSF AGS Postdoctoral Research Fellow / Alexander von Humboldt Foundation Postdoctoral Fellow, Max Planck Institute for Meteorology, Hamburg, Germany


  • Ph.D., 2015, Atmospheric Science, Colorado State University
  • M.S., 2012, Atmospheric Science, Colorado State University
  • B.S. 2009, Atmospheric Science, University at Albany

Research Interests

Broad focus is on convection, clouds, and rainfall, and the dynamic interaction of convection with circulation (or climate) across times scales.

Current research focuses on three topics: 1) the interaction between diurnally forced equatorial waves over the Maritime Continent with tropical intraseasonal variability (the MJO); 2) the influence of daily-promoted anvil clouds on daily-mean radiation and rainfall; and 3) the role of cloud–radiation interaction in the evolution of tropical cyclones.


In process:

  • Ruppert, J. H., Jr., and D. Klocke, 2019: The two diurnal modes of tropical upward motion, Geophysical Research Letters, revised.


  • Chen, X, F. Zhang, and J. H. Ruppert, Jr., 2019: Modulations of Coastal Rainfall Diurnal Cycle Over South China by the Boreal Summer Intraseasonal Oscillation, J. Climate, doi:10.1175/JCLI-D-18-0786.1.
  • Ruppert, J. H., Jr., and M. E O’Neill, 2019: Diurnal cloud and circulation changes in tropical cyclones, Geophysical Research Letters, doi:10.1029/2018GL081302.
  • Ruppert, J. H., Jr., and C. Hohenegger, 2018: Diurnal circulation adjustment and organized deep convection, J. Climatedoi:10.1175/JCLI-D-17-0693.1.
  • Ciesielski, P. E., R. H. Johnson, W. H. Schubert, and J. H. Ruppert, Jr., 2018: Diurnal cycle of the ITCZ in DYNAMO, J. Climatedoi:10.1175/JCLI-D-17-0670.1.
  • Bony, S., B. Stevens, F. Ament, S. Crewel, J. Delanoé, D. Farrell, C. Flamant, S. Gross, L. Hirsch, B. Mayer, J. H. Ruppert, Jr., S. Speich, R. Vogel, M. Wendisch, 2017: EUREC4A: a field campaign to elucidate the couplings between clouds, convection and circulation, Surveys in Geophysics, doi:10.1007/s10712-017-9428-0.
  • Ruppert, J. H., Jr., 2016: Diurnal timescale feedbacks in the tropical cumulus regime. Journal of Advances in Modeling Earth Systems, doi:10.1002/2016MS000713.
  • Ruppert, J. H., Jr., and R. H. Johnson, 2016: On the cumulus diurnal cycle over the tropical warm pool. Journal of Advances in Modeling Earth Systems, doi:10.1002/2015MS000610.
  • Ruppert, J. H., Jr., and R. H. Johnson, 2015: Diurnally modulated cumulus moistening in the pre-onset stage of the Madden–Julian oscillation during DYNAMO, Journal of the Atmospheric Sciences, 72, 1622–1647. doi:10.1175/JAS-D-14-0218.1.
  • Johnson, R. H., P. E. Ciesielski, J. H. Ruppert, Jr., and M. Katsumata, 2015: Sounding-based thermodynamic budgets for DYNAMO, Journal of the Atmospheric Sciences, 72, 598–622. doi:10.1175/JAS-D-14-0202.1.
  • Ruppert, J. H., Jr., and L. F. Bosart, 2014: A case study of the interaction of a mesoscale gravity wave with a mesoscale convective system. Monthly Weather Review, 142, 1403–1429. doi:10.1175/MWR-D-13-00274.1.
  • Johnson, R. H., R. S. Schumacher, J. H. Ruppert, Jr., D. T. Lindsey, J. E. Ruthford, and L. Kriederman, 2014: The role of convective outflow in the Waldo Canyon Fire, Monthly Weather Review, 142, 3061–3080. doi:10.1175/MWR-D-13-00361.1.
  • Ruppert, J. H., Jr., R. H. Johnson, and A. K. Rowe, 2013: Diurnal circulations and rainfall in Taiwan during SoWMEX/TiMREX (2008). Monthly Weather Review, 141, 3851–3872. doi:10.1175/JAS-D-14-0218.1.