There are several options for entering and defining meteorological parameters. Below table provides an overview of the types of input data sources and units of measure available by variable type.

Meteorological Dataset Editor Input Data Source Options and Units by Variable Type

In the Meteorological Dataset Editor, two data source options are available for all meteorological parameters: Constant Value and DSS. The following sections provide general instructions for using either of these input options to specify the atmospheric parameters. In addition to the ability to enter a constant value or a HEC-DSS time series record, several atmospheric parameters offer variable-specific data source options, as identified in the table above and described in the sections dedicated to each parameter.

Constant Value

As shown in the table above, the option to add input data as a constant value is available for all meteorological parameters. To define a variable using the Constant Value data source option:

1. From the ResSim main window, go to the Water Quality module and select Meteorological Data from the Water Quality menu. This will open the Meteorological Dataset Editor.

2. In the Meteorological Dataset Editor, select the desired meteorological dataset from the navigation bar (e.g., Met_Dataset1). Choose your preferred view configuration by selecting either the Station or Variables radio button.

3. In the selection tree, select the relevant meteorological station and variable of interest (e.g., Air Temperature for DryCreek_10).

Constant Value Data Source – Available for all Met Variables – Air Temperature Example

From the editable data panel, select Constant Value from the Data Source dropdown list (e.g.,Constant Value Data Source – Available for all Met Variables – Air Temperature Example). The editable panel below the Data Source dropdown will update accordingly for the selected variable.

Enter the desired value for the variable in the Constant Value box (e.g., 1 in the Constant Value Data Source – Available for all Met Variables – Atmospheric Pressure Example), and optionally provide a description in the Description box.

From the Units dropdown list, select the appropriate units for the entered variable. Refer to the table above for a comprehensive list of accepted units for each variable.

Constant Value Data Source – Available for all Met Variables – Atmospheric
Pressure Example

Click Apply (Figure 3.23) to save the entered value before navigating to a different data source, meteorological parameter, station, or dataset. Click OK (Figure 3.23) to save the entered data and close the Meteorological Dataset Editor (Figure 3.23).

DSS

As shown in the table above, the option to add a time series from an HEC-DSS file is available for all meteorological parameters. To enter input data for a variable from an HEC-DSS file:

1. From the ResSim main window, navigate to the Water Quality module. From the Water Quality menu, click Meteorological Data to open the Meteorological Dataset Editor.

2. In the Meteorological Dataset Editor, select the meteorological dataset of interest (e.g., Met_Dataset1) from the dataset navigation bar. Choose the desired view configuration by selecting either the Station or Variables radio button. From the selection tree, select the meteorological station and variable of interest (e.g., Air Temperature for DryCreek_10).

3. In the editable data panel, select DSS from the Data Source dropdown list (DSS Data Source –Available for all Met Variables). The editable panel below the Data Source dropdown will update to reflect the selected data source. Click the Select DSS button. The Select Time Series Path HEC-DSSVue Selection Window will then open (Select Time Series Path – HEC-DSSVue Selection Window).

DSS Data Source –Available for all Met Variables
From the Select Time Series Path HEC-DSS selection window, click  Open from the toolbar, or or select Open from the File menu. This will open the Open HEC-DSS File browser window (Open HEC-DSS File Browser Window). 

 Select Time Series Path – HEC-DSSVue Selection Window

In the Open HEC-DSS File browser window, navigate to the desired HEC-DSS (.dss) file containing the time series of interest. Select the appropriate .dss file, and the File name field will update with the name of the selected file (e.g., RR_for_demo.dss). Then, click Open.

Open HEC-DSS File Browser Window

The Open HEC-DSS File browser window closes, and the selected HEC-DSS file is displayed in the Select Time Series Path HEC-DSS selection window (Select Time Series Path – HEC-DSSVue Selection Window – Example).
In the Select Time Series Path HEC-DSS selection window, locate and select the record of interest from the opened HEC-DSS file. Then, click the Set Pathname button. The Meteorological Dataset Editor will update to display the selected DSS time series in both the editable data panel and the plot window ( DSS Data Source – Available for all Met Variables – Example Completed ).  
 Select Time Series Path – HEC-DSSVue Selection Window – Example

When finished using the Select Time Series Path HEC-DSS Selection window, click Close from the File menu to close the window. For more information about HEC-DSSVue and DSS pathnames, refer to the HEC-DSSVue User's Manual.

Enter an optional description in the Description box (recommended). Click Apply to save the entered value before navigating to a different data source, meteorological parameter, station, or dataset. Click OK to save the entered data and close the Meteorological Dataset Editor.

 

 DSS Data Source – Available for all Met Variables – Example Completed