Land Use/Land Cover Data Project

Planning Team – March 9-10

Land Use/Land Cover Data Issues

• Dated information – some as old as the mid-80s• Different data needs for various applications• Inconsistent quality and resolution used in various

emissions estimation tools used for regional haze planning– Fire– Dust– Biogenics– Fugitive ammonia– Windblown dust

Applications of Land Use/Land Cover Data for Planning Purposes

• Emissions Tracking and Management– Dust– Fire– Context for “painting the Reasonable Progress picture”– Emissions data resolution

• Area vs. Point for regulatory purposes

– Near Class I areas Emissions Characterization– Dovetail into Technical Data Portal project

• Technical Uses– Emissions modeling

• Windblown dust• Fugitive Ammonia• Biogenics

Deliverables - Land Use/Land Cover Data Project

• April - catalogue available data, prepare complete listing of available data for WRAP region

• May - evaluate data for use in emissions estimation technical tools, recommend changes, annotate catalogue above

• June - process data into tools• June - final website report on project

GIS Data Evaluation• Spatial Resolution

– Need to balance increased resolution with processing requirements/resources

– Depends on expected uses of data sets

– Note data in Figure 4 is derived from Figure 3 data by re-sampling to 2-km resolution – Loss in spatial detail/resolution

• Temporal Changes

– Landuse changes over time

– Relevance for urban areas; desert/barren lands; Ag lands; coastal areas

– Note yellow areas in NE regions and at S end of Bay. Between 1986 and 1993 these are increased areas of barren lands – Possibly due to increased construction activity (urban sprawl)

• Attribute classification

– Data classifications for specific uses

– More detailed categories (wetlands, urban lands)

• Trade-offs between desired resolution/attributes and available resources/data uses

Figure 1. 1986 LU Data

Figure 2. 1993 LU Data

Figure 3. 1993 LU Data (NLCD)

Figure 4. 1993 LU Data (NLCD)As gridded for WRAP Analyses