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Personal profile

Personal profile

Ryan is an associate professor of atmospheric sciences at the University of Ilinois at Urbana-Champaign. Prior to joining UIUC in 2012, he worked as a research associate in Penn State's Department of Geosciences and as a NOAA Climate and Global Change postdoctoral fellow in Penn State's Department of Meteorology. Ryan graduated from Purdue University with a PhD in Earth and Atmospheric Sciences.

Ryan's research seeks to develop a deeper understanding about the physical processes influencing variability within Earth's climate system and to quantify relevant uncertainties using numerical models, observational products, and statistical methods.

His research interests include:  Climate Dynamics, Earth System Modeling, Ocean-Atmosphere Interactions, Uncertainty and Risk, Weather and Climate Extremes, Tropical Cyclones, Sea-Level Rise, and Geo-Engineering.



  • ATMS 140: Climate and Global Change
  • ATMS 404: Risk Analysis in the Earth Sciences
  • ATMS 491: General Circulation of the Atmosphere and Ocean
  • ATMS 491: Physical Oceanography
  • ATMS 500: Dynamic Meteorology
  • ATMS 507: Climate Dynamics
  • ATMS 571: Professional Development


  • Ph.D. Earth and Atmospheric Science, Purdue University, 2008
  • M.S. Physics, Purdue University, 2003
  • B.S. Physics, Purdue University, 2001

Office Address

3046 Natural History Building

Office Phone


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Research Output

The Role of Climate Sensitivity in Upper-Tail Sea Level Rise Projections

Vega-Westhoff, B., Sriver, R. L., Hartin, C., Wong, T. E. & Keller, K., Mar 28 2020, In : Geophysical Research Letters. 47, 6, e2019GL085792.

Research output: Contribution to journalArticle

  • Analyzing El Niño–Southern Oscillation Predictability Using Long-Short-Term-Memory Models

    Huang, A., Vega-Westhoff, B. & Sriver, R. L., Feb 1 2019, In : Earth and Space Science. 6, 2, p. 212-221 10 p.

    Research output: Contribution to journalArticle

    Open Access
  • Evaluating climate emulation: Fundamental impulse testing of simple climate models

    Schwarber, A. K., Smith, S. J., Hartin, C. A., Aaron Vega-Westhoff, B. & Sriver, R., Jan 1 2019, In : Earth System Dynamics. 10, 4, p. 729-739 11 p.

    Research output: Contribution to journalArticle

    Open Access
  • Extreme floods and droughts under future climate scenarios

    Markus, M., Cai, X. & Sriver, R., Aug 1 2019, In : Water (Switzerland). 11, 8, 1720.

    Research output: Contribution to journalEditorial

    Open Access
  • Future climate emulations using quantile regressions on large ensembles

    Haugen, M. A., Stein, M. L., Sriver, R. L. & Moyer, E. J., Feb 4 2019, In : Advances in Statistical Climatology, Meteorology and Oceanography. 5, 1, p. 37-55 19 p.

    Research output: Contribution to journalArticle

    Open Access