Life Cycles of Baroclinic Waves and Baroclinic Wave Activity:
Zhang, R., E.K.M. Chang, and N. Nakamura, 2025: Wave Packets and Life Cycles of Troughs in the Framework of Local Finite-Amplitude Wave Activity. J. Atmos. Sci., 82, 789-808. (Erratum)
Zhang, R., and E.K.M. Chang, 2025: Using Finite Amplitude Wave Activity to Examine the impact of Latent Heating on Baroclinic Wave Activity. (In review, J. Atmos. Sci.)
Local Finite-Amplitude Wave Activity of Water Vapor:
Zhang, R., and E.K.M. Chang, 2025: Local Finite-Amplitude Wave Activity of Water Vapor as a Diagnostic of Atmospheric River Events. Geophys. Res. Lett., 52, e2024GL114314.
Storm Tracks and Extreme Weather Events:
Chang, E.K.M., and R. Zhang, 2025: Comparing Eulerian and Lagrangian Storm Track Changes in the Northern Hemisphere in CMIP5 and CMIP6 Projections. (in progress)
Chang, E.K.M., A.M.W. Yau, and R. Zhang, 2022: Finding Storm Track Activity Metrics that are Highly Correlated with Weather Impacts. Part II: Estimating Precipitation Change Associated with Projected Storm Track Change over Europe. J. Climate, 35, 2423-2440.
Ma, C., E.K.M. Chang, S. Wong, R. Zhang, M. Zhang, and A. Del Genio, 2020: Impacts of Storm Track Variations on Wintertime Extreme Precipitation and Moisture Budgets over the Ohio Valley and Northwestern United States. J. Climate, 33, 5371-5391.
Grotjahn, R., and R. Zhang, 2017: Synoptic Analysis of Cold Air Outbreaks over the California Central Valley. J. Climate, 30, 9417-9433.
Predictability of El Niño with the Conditional Nonlinear Optimal Perturbation (CNOP) Approach:
Duan, W.S., R. Zhang, Y. S. Yu, and B. Tian, 2013: The Role of Nonlinearities Associated with Air-Sea Coupling Processes in El Niño’s Peak-Phase Locking. Sci. China Earth Sci., 56, 1988-1996.
Mu, M., W.S. Duan, Q. Wang, and R. Zhang, 2010: An Extension of Conditional Nonlinear Optimal Perturbation Approach and Its Applications. Nonlin. Processes Geophys., 17, 211-220.
Duan, W.S., and R. Zhang, 2010: Is Model Parameter Error Related to a Significant Spring Predictability Barrier for El Niño Events? Results from a Theoretical Model. Adv. Atmos. Sci., 27(5), 1003-1013.