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.

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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, Iran Sh. Rahmatizadeh GIS expert Air Pollution Research Bureau DOE, Iran

 Abstract  Introduction  Air Pollution Monitoring Stations in Tehran  GIS  Temporal GIS  GIS in Air Quality Management  Conclusions and Future Directions

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.

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

Air Pollution Monitoring Stations in Tehran Azadi Bahman Pardisan Vila Sorkhe hesar Gholhak Tajrish

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 Information System Information System Non-spatial Information Systems Spatial Information Systems Spatial Information Systems Management Information Systems Geographic Information Systems Geographic Information Systems Other Types (CAD/CAM)

Rivers Roads Cities StatesLakes GIS

Combining Various Display Methods

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.

Temporal Modeling Trends Time stampingEvent or process-base Snapshot model Space time composite (STC) Spatio- temporal objectEvent based spatio-temporal data model (ESTDM) Domain oriented spatio-temporal data model Temporal GIS

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).

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

Chart

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,…

Thank You !