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Air Resources Board
Emission Inventory WorkshopSpring 2006 2
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 WorkshopSpring 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 WorkshopSpring 2006 4
Geographic Coordinate Systems
Equator
X
Z
Y
P
(0,0,0)
longitude
latit
ude
Pri
me M
eri
dia
n
Air Resources Board
Emission Inventory WorkshopSpring 2006 5
Geographic Coordinate Systems
Latitude/LongitudeIn California, 32.50o < Latitude < 42.00o
-124.25o <Longitude< -114.15o
Decimal Degrees34o15’30’’ = 34 + 15/60 + 30/3600= 34.25833o
Air Resources Board
Emission Inventory WorkshopSpring 2006 6
Projected Coordinate Systems
Universal Transverse Mercator (UTM) Easting, Northing, Zone
Datum NAD27, NAD83
Spheroid Clarke1866, WGS84
Air Resources Board
Emission Inventory WorkshopSpring 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 WorkshopSpring 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 WorkshopSpring 2006 9
UTM Zones
abs(Longitude)>120o
abs(Longitude)<120o
Air Resources Board
Emission Inventory WorkshopSpring 2006 10
Rounding Errors CARB has UTMs in Kilometers, not meters UTM Easting (UE) - 6 digits
1000 meters - 649.0 100 meters - 649.1 10 meters - 649.12 1 meters - 649.123
UTM Northing (UN) - 7 digits UTM Zone (UZ) 10 or 11
Air Resources Board
Emission Inventory WorkshopSpring 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 WorkshopSpring 2006 12
Magellan GPS 315 Low cost (< $200) PC cable available 2 AA batteries A lithium backup battery Weather proof
Air Resources Board
Emission Inventory WorkshopSpring 2006 13
Spatial Fields Populated By ARB
Facility Coordinates (FACxxxx) UE_NAD83, UN_NAD83, LAT_NAD83, LON_NAD83
Stack Coordinates (STKxxxx) UE_NAD83, UN_NAD83, LAT_NAD83, LON_NAD83
Spatial data were populated and uploaded to CEIDARS for 1990-2002
Air Resources Board
Emission Inventory WorkshopSpring 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
no
yes
yesUsing Centroid of the Area
GeoTrans
Air Resources Board
Emission Inventory WorkshopSpring 2006 15
Tools to Populate ARB Spatial Data Fields – GeoCoding
Air Resources Board
Emission Inventory WorkshopSpring 2006 16
Tools to Populate ARB Spatial Data Fields - Lat/Lon Picker
Air Resources Board
Emission Inventory WorkshopSpring 2006 17
Tools to Populate ARB Spatial Data Fields – Google Earth
Air Resources Board
Emission Inventory WorkshopSpring 2006 18
Tools to Populate ARB Spatial Data Fields - GeoTrans
Air Resources Board
Emission Inventory WorkshopSpring 2006 19
Tools to Map CEIDARS Spatial Data: Facility Locator
Air Resources Board
Emission Inventory WorkshopSpring 2006 20
Tools to Map CEIDARS Spatial Data: Facility Locator
Air Resources Board
Emission Inventory WorkshopSpring 2006 21
Tools to Map CEIDARS Spatial Data: MAAPS
Air Resources Board
Emission Inventory WorkshopSpring 2006 22
Tools to Map CEIDARS Spatial Data: Google Map
Air Resources Board
Emission Inventory WorkshopSpring 2006 23
Tools to Map CEIDARS Spatial Data: EnviroMapper
Air Resources Board
Emission Inventory WorkshopSpring 2006 24
Tools to Map CEIDARS Spatial Data: CHAPIS
Air Resources Board
Emission Inventory WorkshopSpring 2006 25
Tools to update CEIDARS Spatial Data: CEIDARS Online
Air Resources Board
Emission Inventory WorkshopSpring 2006 26
Tools to update CEIDARS Spatial Data: CEIDARS Online
Air Resources Board
Emission Inventory WorkshopSpring 2006 27
Tools to update CEIDARS Spatial Data: CEIDARS Online
Air Resources Board
Emission Inventory WorkshopSpring 2006 28
Web Resources
Google Earth http://earth.google.com/index.html
GeoTrans http://earth-info.nima.mil/GandG/geotrans/
MAAPS http://dtscnet.dtsc.ca.gov/edet/maaps_edet/index.cfm
EnviroMapper http://www.epa.gov/compliance/whereyoulive/
ejtool.html CHAPIS
http://www.arb.ca.gov/gismo/chapis_v01_6_1_04/ CEIDARS Online
http://www.arb.ca.gov/app/emsinv/dist/