air quality assessment & management
Reference and User Manual
Environmental Impact Assessment: annual runsAirWare provides an option to perform a screening level impact assessment for any set existing, hypothetical new, or modified point, area or line emission sources within any user defined domain.
This is based on annual runs of the AERMOD model with an hourly resolution.
Depending on data availability, the assessment results can include:
Impact scenariosThe primary scenario parameters to be selected include the model domain and associated emission sources. Other top level buttons lead to a scenario checker (for the underlying meteorological scenario);
The button "reset" or abort" control the model run;
the button "Maxima" leads the a detailed presentation of the assessment results.
The impact assessment works on the basis of the standard emission inventory, with an emission scenario automatically generated for the selected model domain. The EIA model is implemented for point, area sources and line sources that can be toggled on/off in the listing for each group.
Domain/Source selection: the first user choice is the selection of a model domain and the associated emission sources in the emission scenario, or the definition of one or more new emissions sources as part of the domain specific emission inventory.
The source to be evaluated is selected from the coresponding OBJECT data base (by source type) or the emission inventories (by geographical domain). Links (button: emissions) are part of the impact assessment start and main scenario page.
If a new source is being defined for the purpose of the assessment, tagging it as hypothetical or planned, will exclude it from consideration from the normal scheduled daily and hourly model runs, but add it to the list of sourcs that can be selected in the emission scenario.
Model period and meteorology for the impacts scenario, a period (a calender year, selected at the scenario main page) and a meteorological data source (button: Meteorology) must be selected. Data sources can be monitoring data, MM5/NFL re-analysis data, or an AERMET file.
Model scenario parameters include:
For PM10, the assessment will be performed in terms of daily (24 hour) averages, compliant with the European air quality standards (2008/50/EC).
Thresholds and standards: the impact assessment is done in reference to threshold or standard values for ambient concentration the user can specify for
Run request: with the scenario defined, the user can submit a run request. If the (meteorological) data are complete (checker function) and all necessary scenario parameters have been defined completely and consistently, the model will be run for 24*365 hours. Depending on settings (domain size and resolution, run mode), this may take several hours.
The run request will be confirmed in a separate dialog box, where an eMail address for notification when the run is completed can be specified.
Runs on external compute servers: to exploit fast, dedicated multi-core hardware for long-term (annual) model runs, these can be started on external compute servers (subject to the respective configuration of these servers;
After defining the scenario on the local application server, the remote run can be started using the SCENARIOID:
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