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

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

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

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

Geographic Coordinate Systems Latitude/Longitude In California, 32.50o < Latitude < 42.00o -124.25o <Longitude< -114.15o Decimal Degrees 34o15’30’’ = 34 + 15/60 + 30/3600 = 34.25833o Air Resources Board Emission Inventory Workshop Spring 2006

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

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

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

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

Emission Inventory Workshop 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 Workshop Spring 2006

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

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

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 1990-2002 Air Resources Board Emission Inventory Workshop Spring 2006

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Emission Inventory Workshop 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/ 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