Slide 1 - ESSIE at the University of Florida
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Tutorial for AERMOD View, an
interface for US-EPA AERMOD Model
Nima A-Mohajer
ENV 6146, Atmospheric
Dispersion Modeling
February 2010
http://www.weblakes.com/
Outline
Introduction to AERMOD
Installation, AERMOD View environment
AERMET
Making the model in AERMOD View
AERMOD pathways
AERMAP
Running AERMOD View
Goal
Pursuing an example for air dispersion modeling by using
the AERMOD short-term model
An introduction to AERMOD
AERMOD
stands for American Meteorological Society/ Environmental
Protection Agency Regulatory Model
COMPONENTS
1) AERMET – a meteorological preprocessor
2) AERMAP – a terrain data preprocessor
3) AERMOD – a dispersion model
SUPPORT TOOLS
1) AER-SURFACE – processes surface characteristics data
2) AER-SCREEN – provides a screening tool
AERMOD View, an interface for US-EPA AERMOD Model
AERMET environment
AERMOD View, an interface for US-EPA AERMOD Model
Minimum AERMET input data
1) Hourly surface data
2) Upper air data
3) Location of the pertinent site, sectors and surface data
4) On-site data
Hourly surface data
1) Cloud cover (Tenth)
2) Dry bulb temperature (o C)
3) Relative humidity (%)
4) Station pressure (mb)
7) Ceiling height (m)
8) Precipitation amount
(hundredths of inches)
9) Global horizontal radiation
(wh/m2)
5) Wind direction (deg)
6) Wins speed (m/s)
AERMOD View, an interface for US-EPA AERMOD Model
AERMET (Hourly surface data)
AERMOD View, an interface for US-EPA AERMOD Model
Input hourly surface data
AERMOD View, an interface for US-EPA AERMOD Model
Quality assessment feature
QA is an optional process helping potential problems in data to
be excluded or included.
AERMOD View, an interface for US-EPA AERMOD Model
AERMET (Upper air data)
AERMOD View, an interface for US-EPA AERMOD Model
Input upper air data
How does it look after clicking preview button?
http://www.webmet.com/MetGuide/TD6200.html
AERMOD View, an interface for US-EPA AERMOD Model
Quality assessment for upper data
QA is an optional process helping potential problems in data to
be excluded or included.
AERMOD View, an interface for US-EPA AERMOD Model
Application site, sectors and surface parameters
Site of model (application site)
AERMOD View, an interface for US-EPA AERMOD Model
Application site, sectors and surface parameters
AERMOD View, an interface for US-EPA AERMOD Model
Application site, sectors and surface parameters
1) Albedo for each land type → reflective power of the surface
2) Bowen ratio for each land type → portion of transferred
energy from the surface to the atmosphere
3) Surface roughness foe each land type
A combination of
different types of land
use data may be used
for a particular case.
AERMOD View, an interface for US-EPA AERMOD Model
Running the AERMET/Outputs
Output files
1) Surface file, *.SFC
2) Profile file, *.PFL
3) Wind rose
AERMOD View, an interface for US-EPA AERMOD Model
AERMOD View
Assumptions
3) SO2 as pollutant in flue gas
1) A factory in a rural area 4) Assumed value for stacks
2) 2 stacks with a building 5) Surface file, *.SFC
in between
6) Profile file, *.PFL
AERMOD View, an interface for US-EPA AERMOD Model
Defining initial parameters
UTM (Universal
Transverse Mercator)
Zones
http://en.wikipedia.org/wiki/Universal_Tran
sverse_Mercator_coordinate_system
AERMOD View, an interface for US-EPA AERMOD Model
Defining initial parameters
Site geometry
AERMOD View, an interface for US-EPA AERMOD Model
AERMOD environment
AERMOD View, an interface for US-EPA AERMOD Model
Importing base map
A raster map as an image file (JPEG, TIFF, DXF, …) should be
imported
Import → Base maps…
Then, map extents should be geo-referenced
AERMOD View, an interface for US-EPA AERMOD Model
Importing stacks and building
Extents of the building foundation and stacks are imported by
a DXF file. Import → base maps…
AERMOD View, an interface for US-EPA AERMOD Model
Defining building
Drawing tools
AERMOD View, an interface for US-EPA AERMOD Model
Defining stacks
Zooming to the extents of interest
AERMOD View, an interface for US-EPA AERMOD Model
Defining stacks
Drawing tools
AERMOD View, an interface for US-EPA AERMOD Model
3-D Visualization
Export → Google Earth
AERMOD View, an interface for US-EPA AERMOD Model
AERMOD pathways
1) Control pathway
2) Source pathway
3) Receptor pathway
4) Meteorology pathway
5) Output pathway
Control pathway
Dispersion options
Pollutant/Averaging
Terrain options
Source pathway
Source summary
Building downwash
Receptor pathway
Receptor summary
Grids
Meteorological pathway
Met input data
Data period
Wind speed categories
AERMOD View, an interface for US-EPA AERMOD Model
Control pathway
1) Dispersion options
AERMOD View, an interface for US-EPA AERMOD Model
Control pathway
2) Pollutant/Averaging
AERMOD View, an interface for US-EPA AERMOD Model
Control pathway
2) Pollutant/Averaging
If the land use
types including
industrial,
commercial and
residential uses
account for 50% or
more of an area
within 3 km radius
from the source,
the site is classified
as urban;
otherwise, it is
classed as rural.
AERMOD View, an interface for US-EPA AERMOD Model
Control pathway
3) Terrain options
AERMOD View, an interface for US-EPA AERMOD Model
Source pathway
1) Source summary
AERMOD View, an interface for US-EPA AERMOD Model
Source pathway
2) Building downwash
Will be calculated
later on by the
software
AERMOD View, an interface for US-EPA AERMOD Model
Receptor pathway
1) Receptor summary
AERMOD View, an interface for US-EPA AERMOD Model
Receptor pathway
2) Grids
or
AERMOD View, an interface for US-EPA AERMOD Model
Meteorology pathway
1) Met input data
AERMOD View, an interface for US-EPA AERMOD Model
Meteorology pathway
2) Data period
AERMOD View, an interface for US-EPA AERMOD Model
Meteorology pathway
3) Wind speed categories
AERMOD View, an interface for US-EPA AERMOD Model
Output pathway
1) Tabular outputs
AERMOD View, an interface for US-EPA AERMOD Model
Terrain, (AERMAP processor)
Terrain or AERMAP feature of AERMOD, is used for
processing the elevated terrains. It creates a digital terrain file
that covers modeling domain.
Digital Elevated Maps (DEM)
AERMOD View, an interface for US-EPA AERMOD Model
Terrain, (AERMAP processor)
Determining the extensions in DEM
AERMOD View, an interface for US-EPA AERMOD Model
Terrain, (AERMAP processor)
Import elevations/hill heights
Reviewing Receptor
pathway, Source pathway,
and Building Inputs, shows
the imported elevations
and hill heights generated
by AERMAP
AERMOD View, an interface for US-EPA AERMOD Model
AERMAP output
AERMOD View, an interface for US-EPA AERMOD Model
Running BPIP
BPIP is an acronym for Building Input Profile Program and it
is for obtaining building downwash calculation results.
AERMOD View, an interface for US-EPA AERMOD Model
Running BPIP
Run → BPIP
AERMOD View, an interface for US-EPA AERMOD Model
Running AERMOD
AERMOD View, an interface for US-EPA AERMOD Model
Final output
AERMOD View, an interface for US-EPA AERMOD Model
Thank you for your attention.