Introduction for running the simulation:

1. Read inputs

Upload each input file from "Upload input data" tab in the rWaSSI running website. The summary of each uploaded input data will be shown on the right side of the website. You might want to check the values of your input and make sure they are as you expect. You you can plot your input data in the "Plot input data". If not you can go directly to "Run the simulation" tab.

2. Plot the input data

You can plot your input data in the "Plot input data" tab. Generally, it will plot LAI and Climate data as a time series, and just print the values of the soil and cell information for your selected HUCs.

• • Type in WS_IDs that you want to plot. You need to separate each WS_ID with ",".

  • Select a dataset (Climate, LAI, Soil or Cellinfo);

  • Type the variable names for your plot (You only need to set that if you need to plot LAI data); You need to separate each variable name with ",".

  • Type the printing names for those variables (This is only for LAI data). You need to separate each variable name with ",".

  • Select the time period for Climate and LAI data.

  • Check the Annual box if you want to plot the annual scale time series.

3. Run the simulation

After uploading inputs in "Plot input data" tab, you can run the simulation in "Run the simulation" tab. On the left side, you have a couple of options to set up your simulation.

• • Type in WS_IDs that you want to simulate. You need to separate each BasinID with ",". The default value is "0", which means that all the HUCs within your inputs will be used. You can set a single or multiple HUCs during the simulation. This is useful when you want to test a specific HUC or if you want to simulate an area that with a single outlet BasinID. In this case, you need to upload a flow routing file to let the model know the flow directory.

  • Upload Flow routing parameter [Optional]. This file should have at least two columns, FROM and TO, which tells the flow directory of all the BasinIDs in your inputs. This file is needed when you want to simulate the upstreams area of specific BasinID, or you want to calculte the flow routing result.

  • Select a method for flow routing [Under deveopment]. The default is using the area-weight method to get the accumulated flow for the outlets. You can select some flow routing methods for this later. The methods could be Convex, Kinematic, Muskingum-Cunge add etc. If you choose a method other than area-weight, you need to upload a paramter file for that method.

  • Upload your own ET model (Optional). The default ET model used in the model is developed by Sun et al., (2011a). You can set up your own ET model for each vegetation types based on you need. You just need to set up each parameter for the general ET equation based on Precipitation (P), Potential Evapotranspiration (PET), Leaf area index (LAI). The general equation of ET is

ET = P_ceof * P + PET_coef * PET + LAI_coef * LAI + P_PET_coef * P * PET + P_LAI_coef * P * LAI + PET_LAI_coef * PET * LAI