Software

iGD8 (improved Global D8)

Automatic algorithm to extract surface flow paths from a given DEM without artificial dispersion.
Original reference of iGD8: Shin, S. and K. Paik (2017) An improved method for single flow direction calculation in grid digital elevation models, Hydrological Processes, Vol.31, Issue8, pp.1650-1661, doi: 10.1002/hyp.11135.
Original reference of GD8: Paik, K. (2008) Global search algorithm for nondispersive flow path extraction. Journal of Geophysical Research, Vol.113, F04001, doi: 10.1029/2007JF000964.

DESE (Dynamics Earth Surface Environment)

DESE is a developed model based on LEGS that takes into account feedbacks among human, surface hydrology, topography, and vegetation. This is a protoype and we are currently working on advanced version.
Most recent reference: Paik, K. and W. Kim (2021) Simulating the evolution of the topography–climate coupled
system, Hydrology and Earth System Sciences, Vol.25, Issue5, pp.2459–2474, doi:10.5194/hess-25-2459-2021.
This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIT) (No. 2018R1A2B2005772)

LEGS (Landscape Evolution model using Global Search)

LEGS is the first whole landscape evolution model that uses GD8 algorithm. Later version of LEGS is published in
2021 which can handle co-evolution of local climate and topography.
Original reference: Paik, K. (2012) Simulation of landscape evolution using a global flow pat

MoRE (Multiobjective modeling framework for Riverscape Exploration)

I first developed GLE (Genetic Landscape Evolution) as an optimization algorithm which can handle a 4-d
optimization problem where 3-d topography varies over time. Later, the model has been rebuilt as a multi-objective
framework, named MoRE.
Original reference of MoRE: Bizzi, S., A. Cominola, E. Mason, A. Castelletti, and K. Paik (2018) Multicriteria
optimization model to generate on-DEM Optimal Channel Networks, Water Resources Research, Vol.54, Issue8,
pp.5727–5740, doi: 10.1029/2018WR022977.
Original reference of GLE: Paik, K. (2011) Optimization approach for 4-D natural landscape evolution, IEEE
Transactions on Evolutionary Computation, Vol.15, No.5, pp.684-691, doi: 10.1109/TEVC.2010.2087027.

Seasonal Tank model

Lumped rainfall-runoff simulation model that considers seasonal variations on its parameter set.
Original reference: Paik, K., J. H. Kim, H. S. Kim, and D. R. Lee (2005) A conceptual rainfall-runoff model
considering seasonal variation, Hydrological Processes, Vol.19, Issue19, pp.3837-3850, doi: 10.1002/hyp.5984.