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Assessment of Important SPECIATE Profiles in EPA’s Emissions Modeling Platform and Current Data Gaps
Citation:
Bray, C., M. Strum, H. Simon, L. Riddick, Mike Kosusko, AND V. Rao. Assessment of Important SPECIATE Profiles in EPA’s Emissions Modeling Platform and Current Data Gaps. US EPA 2017 International Emissions Inventory Conference, Baltimore, MD, August 14 - 18, 2017.
Impact/Purpose:
Analysis of profiles used in SPECIATE database will determine most critical research gaps
Description:
The US Environmental Protection Agency (EPA)’s SPECIATE database contains speciation profiles for both particulate matter (PM) and volatile organic compounds (VOCs) that are key inputs for creating speciated emission inventories for air quality modeling. The objective of this work is to identify the most influential profiles based on mass and reactivity for various regions of the US. These profiles will be further investigated to characterize the profile quality and determine whether current matching between profiles and source types appropriately captures source type and regional variability in speciation. In cases where this analysis identified either low quality or poorly matched profiles, an in-depth review of the SPECIATE database and the literature will be conducted to identify currently available suitable replacements. In cases where no suitable replacement profiles are found, this analysis will identify important gaps in the current literature which may be used to prioritize future speciation source testing. Through this process we aim to identify critical research needs, improve the SPECIATE database and improve a critical input for photochemical modeling efforts.