Frederick Iat-Hin Tam


Project Research Assistant


Curriculum vitae


[email protected]


Meteorology Building - C205
National Taiwan University
No.1, Sec. 4, Roosevelt Rd., Taipei, 10617, Taiwan



Microphysical and Near-Storm Environmental control on the Maintenance of Nocturnal Mesoscale Convective Systems: A Case Study


Master's thesis


Frederick Iat-Hin Tam, Ming-Jen Yang, Wen-Chau Lee
National Taiwan University, M. S. thesis, 2019 Jan

Cite

Cite

APA
Tam, F. I.-H., Yang, M.-J., & Lee, W.-C. (2019, January). Microphysical and Near-Storm Environmental control on the Maintenance of Nocturnal Mesoscale Convective Systems: A Case Study (Master's thesis). National Taiwan University, M. S. thesis.

Chicago/Turabian
Tam, Frederick Iat-Hin, Ming-Jen Yang, and Wen-Chau Lee. “Microphysical and Near-Storm Environmental Control on the Maintenance of Nocturnal Mesoscale Convective Systems: A Case Study .” Master's thesis, National Taiwan University, 2019.

MLA
Tam, Frederick Iat-Hin, et al. Microphysical and Near-Storm Environmental Control on the Maintenance of Nocturnal Mesoscale Convective Systems: A Case Study . National Taiwan University, Jan. 2019.


In this M.S. thesis, we investigated the sustenance of nocturnal convection when encountering boundary layer stabilized by radiative cooling.
Observational analyses show two routes that would lead to convective sustenance:
  • External: Moisture heterogeneity associated with low-level jets (LLJs) creates areas that are more unstable above boundary layer.
  • Internal: Sustaining convection seems to have more robust ice processes and a stronger mid-level rear-to-front (RTF) inflow.
Sensitivity experiments were conducted to examine how the MCS kinematically responds to different microphysical parameterization assumptions. Spatial variability in rimed particle drop size distributions (DSDs) seems to be the critical factor leading to the "internal" sustaining route. Parameterization assumptions that unrealistically depict this variability are shown to change storm kinematics, even under similar ambient environmental conditions.