Tianyi Sun

Climate Scientist


Areas of expertise:
Climate change mitigation, climate modeling, greenhouse gas emissions and metrics, ocean-atmosphere interaction, climate science communication

Tianyi's research focuses on the impacts of short-lived climate pollutants. She explores how methane emissions and their mitigation affect Arctic sea ice, ocean warming, and sea level rise, as well as the role of short-lived greenhouse gases in net zero emissions pathways. She also supports the climate science communication efforts at EDF.


Tianyi holds a Ph.D. in Climate Dynamics from the University of Texas at Austin and did her undergraduate studies in Atmospheric Sciences at Nanjing University, China. Tianyi joined EDF as a postdoctoral climate science fellow in 2019.


Ocko, I.B., T. Sun, D. Shindell, M. Oppenheimer, A. Hristov, S.W. Pacala, D.L. Mauzerall, Y. Xu and S.P. Hamburg 2021: Acting rapidly to deploy readily available methane mitigation measures by sector can immediately slow global warming, Environ. Res. Lett., https://iopscience.iop.org/article/10.1088/1748-9326/abf9c8

Sun, T. and Y. M. Okumura 2020: Impact of ENSO-like tropical Pacific decadal variability on the relative frequency of El Niño and La Niña events. Geophysical Research Letters, https://doi.org/10.1029/2019GL085832

Sun, T. and Y. M. Okumura 2019: Role of Stochastic Atmospheric Forcing from the South and North Pacific in Tropical Pacific Decadal Variability. Journal of Climate, https://doi.org/10.1175/JCLI-D-18-0536.1.

Okumura, Y.M., T. Sun, and X. Wu, 2017: Asymmetric Modulation of El Niño and La Niña and the Linkage to Tropical Pacific Decadal Variability. Journal of Climate, https://doi.org/10.1175/JCLI-D-16-0680.1