Impact model: WAYS

Sector
Water (global)
Region
global

WAYS is a large scale distributed hydrological model that works on both the global and regional scales. Apart from the traditional hydrological models, WAYS improves the integrality of soil water simulation and integrates the separately derived root zone water storage in the model, thus can consider the water circulation in the entire root zone during the hydrological simulation. As a result, it can reflect the impacts of the natural spatial heterogeneity of the plant rooting system on soil water dynamics. For a full technical description of WAYS can be found in our recently published paper in GMD: Mao, G., & Liu, J. (2019). WAYS v1: a hydrological model for root zone water storage simulation on a global scale. Geoscientific Model Development, 12(12), 5267–5289. https://doi.org/10.5194/gmd-12-5267-2019

Information for the model WAYS is provided for the simulation rounds shown in the tabs below. Click on the appropriate tab to get the information for the simulation round you are interested in.

Person responsible for model simulations in this simulation round
Junguo Liu: junguo.liu@gmail.com, 0000-0002-5745-6311, Southern University of Science and Technology (China)
Additional persons involved: He Chen (11849584@mail.sustech.edu.cn), Ganquan Mao (ganquan.mao@icloud.com)
Basic information
Model Version: v1
Model Output License: CC0
Model Homepage: https://github.com/argansos/WAYS_v1
Model License: GPL-3.0 License
Simulation Round Specific Description: ISIMIP2a ISIMIP2b ISIMIP3a ISIMIP3b
Reference Paper: Main Reference: Mao G, Liu J et al. WAYS v1: a hydrological model for root zone water storage simulation on a global scale. Geoscientific Model Development,12,5267-5289,2019
Resolution
Spatial aggregation: regular grid
Horizontal resolution: 0.5°x0.5°
Temporal resolution of input data: climate variables: daily
Temporal resolution of input data: soil: constant
Input data
Climate variables: hurs, huss, tasmax, tas, tasmin, uas, rlds, wind, rhs, rsds, pr
Spin-up
Was a spin-up performed?: Yes
Spin-up design: 5 years spin-up
Soil
Soil layers: the entire root zone
Calibration
Was the model calibrated?: Yes
Which years were used for calibration?: 1986-1995
Which dataset was used for calibration?: ISLSCP II UNH/GRDC Composite Monthly Runoff
How many catchments were callibrated?: all the pixels
Methods
Potential evapotranspiration: Penman– Monteith FAO 56 PM method
Snow melt: degree-day method