1. Spatial Data in CEIDARS
LinYing Li
Emission Inventory Workshop
March 13, 2006

2. Emission Inventory Workshop
Outline of the Topics
Significance of spatial data in CEIDARS
Spatial coordinate systems
Types of spatial data
Spatial data fields in CEIDARS
Tools for populating spatial data
Tools for mapping spatial data
Tools for updating spatial data in CEIDARS
Air Resources Board
Emission Inventory Workshop
Spring 2006

3. Why is Location Important?
Emission inventory is the foundation for air quality management and regulatory activities at local, regional, state, and national levels
Incomplete and inaccurate data downgrades the value of emission inventory
Location information is a critical component for emission inventory, especially for non-mobile sources
Air Resources Board
Emission Inventory Workshop
Spring 2006

4. Geographic Coordinate SystemsZ P
Prime Meridian f
latitude
(0,0,0)
Equator Y l
longitude X
Air Resources Board
Emission Inventory Workshop
Spring 2006

5. Geographic Coordinate Systems
Latitude/Longitude
In California,
32.50o < Latitude < o
o <Longitude< o
Decimal Degrees
34o15’30’’
= / /3600
= o
Air Resources Board
Emission Inventory Workshop
Spring 2006

6. Projected Coordinate Systems
Universal Transverse Mercator (UTM)
Easting, Northing, Zone
Datum
NAD27, NAD83
Spheroid
Clarke1866, WGS84
Air Resources Board
Emission Inventory Workshop
Spring 2006

7. Types of Spatial Data in CEIDARS
Administrative District
county, air basin, air district
Postal Address
street address, city, zip code
Geographic Coordinate System
longitude and latitude
Projected Coordinate System
UTM North and East
Public Land Survey System
meridian base, township, range, section
Air Resources Board
Emission Inventory Workshop
Spring 2006

8. Spatial Fields in CEIDARS
County, Air Basin, Air District in all Tables
CO, AB, DIS
Facility Address (FACxxxx)
FSTREET, FCITY, FZIP, FZIPEXT
Facility Coordinates (FACxxxx)
COORD_SYS, DATUM, SPHEROID, X_USERCOORD, Y_USERCOORD,
Stack Coordinates (STKxxxx)
COORD_SYS, DATUM, SPHEROID, X_USERCOORD, Y_USERCOORD
Device Survey Location (DEVxxxx)
TWNSHP, RANGE, SECT
Air Resources Board
Emission Inventory Workshop
Spring 2006

9. Emission Inventory Workshop
UTM Zones
abs(Longitude)<120o
abs(Longitude)>120o
Air Resources Board
Emission Inventory Workshop
Spring 2006

10. Emission Inventory Workshop
Rounding Errors
CARB has UTMs in Kilometers, not meters
UTM Easting (UE) - 6 digits
1000 meters
100 meters
10 meters
1 meters
UTM Northing (UN) - 7 digits
UTM Zone (UZ) 10 or 11
Air Resources Board
Emission Inventory Workshop
Spring 2006

11. Sources for Coordinates
GPS Receiver (Best)
Assessor’s Parcels (Good)
GIS Layer (Good)
Address Matching (Adequate)
Arc GIS
Google Earth
Web Tools
Air Resources Board
Emission Inventory Workshop
Spring 2006

12. Emission Inventory Workshop
Magellan GPS 315
Low cost (< $200)
PC cable available
2 AA batteries
A lithium backup battery
Weather proof
Air Resources Board
Emission Inventory Workshop
Spring 2006

13. Spatial Fields Populated By ARB
Facility Coordinates (FACxxxx)
UE_NAD83, UN_NAD83, LAT_NAD83, LON_NAD83
Stack Coordinates (STKxxxx)
Spatial data were populated and uploaded to CEIDARS for
Air Resources Board
Emission Inventory Workshop
Spring 2006

14. Steps to Populate ARB Spatial Data Fields in CEIDARS
ZIP, CITY, CO ?
Street Address
GeoCoding using
GIS, Google Earth, etc.
Transfer to NAD83
longitude and latitude
Convert UTM from
NAD27 to NAD83
X,Y_UserCoord no
yes
Using Centroid
of the Area
GeoTrans
Air Resources Board
Emission Inventory Workshop
Spring 2006

15. Tools to Populate ARB Spatial Data Fields – GeoCoding
Air Resources Board
Emission Inventory Workshop
Spring 2006

16. Tools to Populate ARB Spatial Data Fields - Lat/Lon Picker
Air Resources Board
Emission Inventory Workshop
Spring 2006

17. Tools to Populate ARB Spatial Data Fields – Google Earth
Air Resources Board
Emission Inventory Workshop
Spring 2006

18. Tools to Populate ARB Spatial Data Fields - GeoTrans
Air Resources Board
Emission Inventory Workshop
Spring 2006

19. Tools to Map CEIDARS Spatial Data: Facility Locator
Air Resources Board
Emission Inventory Workshop
Spring 2006

20. Tools to Map CEIDARS Spatial Data: Facility Locator
Air Resources Board
Emission Inventory Workshop
Spring 2006

21. Tools to Map CEIDARS Spatial Data: MAAPS
Air Resources Board
Emission Inventory Workshop
Spring 2006

22. Tools to Map CEIDARS Spatial Data: Google Map
Air Resources Board
Emission Inventory Workshop
Spring 2006

23. Tools to Map CEIDARS Spatial Data: EnviroMapper
Air Resources Board
Emission Inventory Workshop
Spring 2006

24. Tools to Map CEIDARS Spatial Data: CHAPIS
Air Resources Board
Emission Inventory Workshop
Spring 2006

25. Tools to update CEIDARS Spatial Data: CEIDARS Online
Air Resources Board
Emission Inventory Workshop
Spring 2006

26. Tools to update CEIDARS Spatial Data: CEIDARS Online
Air Resources Board
Emission Inventory Workshop
Spring 2006

27. Tools to update CEIDARS Spatial Data: CEIDARS Online
Air Resources Board
Emission Inventory Workshop
Spring 2006

28. Emission Inventory Workshop
Web Resources
Google Earth
GeoTrans
MAAPS
EnviroMapper
CHAPIS
CEIDARS Online
CEIDARS 2 designed x years ago
tabular database
regional planning
spatial data present but not emphasized or checked
Circumstances have forced us to look at increasing the spatial quality of our data. Increased need for higher quality spatial data.
Air Resources Board
Emission Inventory Workshop
Spring 2006