MEMO meteorological model:
Scenario editing

The CREATE button in the main MEMO interface leads to the scenario editing functions.

This will prepare a new scenario for simulation by the MEMO server. The current date is used as a default, and the previous scenario as a TEMPLATE to generate a new one.

Please note that a new name has to be specified for the new scenario, as the system will not overwrite an existing one.

Changing the scenario name

To change the scenario name, position the mouse pointer in the corresponding window, and use the keyboard to enter a new name; use the Delete or Backspace keys to delete the old string.

Editing scenario parameters

The following scenario parameters can be set or selected by the user:

• set of output variables to be computed (toggle on/off);
• set of output layers to be displayed (toggle on-off);
• a symbolic meteorological scenario;
• duration of the simulation;
• time step of the simulation;
• name of the new scenario;
• scaling of the emission matrices.

To change a parameter, position the mouse pointer over its window and click with the left mouse button; this will either toggle the value (on/off) or create a pop-up window with a set of alternatives to choose from from. Text strings like the scenario name can be edited with the keyboard.

Emission matrices

• the basic substances: NO2, VOC, CO;
• the basic source categories, i.e.:
  • traffic;
  • inner city traffic;
  • high industrial stacks;
  • low industrial stacks;
  • households;
  • airports.

To select a substance, click its name and total emission value in the lower right selector window of the main editor pop-up tool;

The user can select and display in one of the three smaller windows any one of these matrices, and specify a scaling factor for them; the fourth window shows their sum total, i.e., substance specific total annual emissions (in tons/year).

To edit the multiplier, the standard editor tool of the embedded expert system is used.