design and development of a customized gis for air quality management in the name of allah dr. s....
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DESIGN AND DEVELOPMENT OF A CUSTOMIZED GIS FOR AIR QUALITY
MANAGEMENT
In the name of Allah
Dr. S. Motesaddi
Director General for air pollution research bureau, assistant professor, DOE, [email protected]
Sh. Rahmatizadeh GIS expertAir Pollution Research Bureau DOE, [email protected]
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AbstractIntroductionAir Pollution Monitoring Stations in
TehranGISTemporal GISGIS in Air Quality ManagementConclusions and Future Directions
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Abstract
Spatial dispersion of the pollutants. lack of accurate, update and organized data lake of spatial and non-spatial Data lack of integrated system for capture,
storage, manipulation, retrieval, analysis, presentation exchange of environmental data.
A geo-spatial information system (GIS) can be used as DSS.
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Introduction
• Tehran is the capital of Iran
• area about 700 Km2.
• Mountains surround North and East of the city.
• The average of rainfall is 230 mm
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Air Pollution Monitoring Stations in Tehran
Azadi
Bahman
Pardisan
Vila
Sorkhe hesar
GholhakTajrish
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GIS Geographic Information System GIS is a system of computer software, hardware
and data, and personnel to help, manipulate, analyze and present information that is tied to a spatial location
Estimates are that 80% of all data has a spatial component
InformationSystem
InformationSystem
Non-spatialInformationSystems
SpatialInformationSystems
SpatialInformationSystems
ManagementInformationSystems
GeographicInformationSystems
GeographicInformationSystems
OtherTypes
(CAD/CAM)
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Rivers
Roads
Cities
States Lakes
GIS
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Combining Various Display Methods
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Temporal GIS
We live in a dynamic world. Every thing around us changes at different rate.
A Spatio-Temporal GIS aims to process, manage and analyze spatio-temporal data
From temporality point of view, there are two types of information, Static and dynamic, which must be modeled under a temporal GIS. In this research air pollution monitoring stations are mostly static and the value of pollutant over the time is dynamic.
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Temporal Modeling Trends
Time stamping Event or process-base
Snapshot model
Space time composite (STC)
Spatio- temporal object Event based spatio-temporal data model (ESTDM)
Domain oriented spatio-temporal data model
Temporal GIS
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GIS in air quality managment
The capabilities of GIS for AQMS are as fallow:
a) To locate the monitoring station b) To develop geospatial air quality
models c) To develop spatial decision
support system (SDDS).
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Monitored environmental data from stations
Accuracy of the data was assessed by using statistical analysis
Stored in database
PSI calculation
Stored in the temporal database
Digital map preparation at a scale of 1:50000
Determination of the location of stations on the
map
Attribute data were assigned to spatial objects
Performing spatio- temporal analysis
Air quality management
Topological structuring
Methodology
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Chart
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Conclusions and Future Directions
GIS as EDSS environmental decision support system.
can be useful as an alarm system. Importance of Temporal GIS Spatial analysis functions :
overlay buffering pollution affected zones
Trend pollutant value Topographic data, Land use, Climatologically,
Geo-Spatial factor, DTM,…
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Thank You !