AirWare On-line Reference Manual
| | Release Level | 5.4 |
| | Release Date | 2008 10 |
| Revision Level | 1.0 |
|
Last modified on:
Monday, 20-Jul-09 14:03 CEST
|
Emission patterns
Emissions vary in time.
To reflect that, AirWare supports three mechanisms:
- explicit editing of emission time series (e.g., for PBM, PUFF);
- use of time-series data of emissions (only for boilers/major
stacks associated with industrial plants);
- use of temporal scaling factors.
The temporal scaling factor can be specified for:
- monthly variations, 12 values for seasonal variations;
- day of the week, 7 values, for differences between workdays and weekends;
- hourly variations, 24 values, for daily patterns such as working hours or rushour.
The values (multipliers) can be normalized (BUTTON: NORMALIZE) so that their toal effect
is neutral or mass conservative over a full year, when applied to
the annual average value at an hourly basis.
The temporal patterns can be assigned to
- individual emission sources
- classes of emission sources (by sector)
at the level of model specific emission scenarios.
Exceptions: public holidays
A list of statutory holidays
with their associated emission reduction (or more general: correction)
factors is available as a special object class.
Pattern for real-time scenarios
Selecting temporal emission patterns for CAMx forecast scenarios
can only be done by members of group 'admin':
- At the forecast scenario page: select the main model domain
- this is the domain with the largest extent and includes all other domains.
Click button "Emission".
- At the emission scenario page: click button
"Temporal Pattern" and select the pattern.
Warning: Currently the forecast scenarios are independent for each day.
Therefore the selection of pattern is only valid for one day of
forecast. To apply a pattern to the complete sequence of forecast
scenarios, each of the individual forecast scenarios needs to be edited.
