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SIP Modeling Inventories. Based on CCOS episodes (year 2000) SIP Gridded Inventory Coordination Group provided a forum for discussing inventory issues as modeling inventories were reviewed. As updates and corrections were made for July/August 2000 episode, other episodes benefited.
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SIP Modeling Inventories • Based on CCOS episodes (year 2000) • SIP Gridded Inventory Coordination Group provided a forum for discussing inventory issues as modeling inventories were reviewed. • As updates and corrections were made for July/August 2000 episode, other episodes benefited.
Examples of Updates and Corrections • Corrected problem in processing that dropped some point and area emissions • Added locations for facilities with missing UTMs • Revised on-road motor vehicle and biogenics using CALMET temperatures • Adjusted SAPRC output to separately list MTBE, MBUT and ETOH • Included updates to point and area source emissions
Documentation • Documentation of Methods to Develop Modeling Inventories (draft distributed to SIP GICG) • Emission Inventory Branch’s Website Accessing SIP Emissions Projections : http://www.arb.ca.gov/app/emsinv/ccos/index.php • Report generators • Documentation • Control Rule Reports
July 1999 Inventory • Not a CCOS episode • Limited day-specific data for point and area sources: • includes shipping • July/August 2000 episode included day-specific data for 65 large point sources, ag burning and wildfires • 1999 base year for emission inventory (consistent with other episodes)
Development of July 1999 Inventory • Alpine Geophysics developed modeling inventories under contract with BAA QMD and ENVIRON • ARB provided point and area source files for weekday and weekend day in July 1999 • Alpine Geophysics developed biogenic and on-road motor vehicle emissions estimates
Comparison of July 1999 NOx Emissionswith Current and New August 2000 (weekday)
Comparison of July 1999 TOG Emissionswith Current and New August 2000 (weekday)