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Screening differences between a local inventory and the Emissions Database for Global Atmospheric Research (EDGAR)
Jessie Madrazo1, Alain Clappier2, Luis Carlos Belalcazar3
1Swiss Federal Institute of Technology of Lausanne, EPFL, Switzerland.
The Science of the Total Environment
|May 6, 2018
Summary
Global emission inventories like EDGAR show discrepancies with local data in Cuba. EDGAR overestimates some emissions and underestimates others, making it unsuitable for accurate air quality modeling in the region.
Area of Science:
- Environmental Science
- Atmospheric Chemistry
- Air Quality Management
Background:
- Global emission inventories (EIs) are crucial for air quality modeling in Latin America.
- The Emission Database for Global Atmospheric Research (EDGAR) is widely used but has known gaps compared to national inventories.
- Cuba lacks a detailed national EI, leading to reliance on EDGAR for air quality assessments without validation.
Purpose of the Study:
- To compare and contrast the EDGAR global EI with a local Cuban inventory.
- To evaluate the similarities and discrepancies between the two datasets.
- To assess the reliability of EDGAR for air quality modeling in Cuba.
Main Methods:
- Utilized advanced comparison techniques from the Forum for Air Quality Modelling in Europe (FAIRMODE).
- Conducted a detailed analysis of differences between EDGAR and the local inventory.
- Investigated potential explanations for observed discrepancies.
Main Results:
- EDGAR produced spatially smoother results and lower values in emission hotspots.
- Emission factors for stationary sources showed EDGAR overestimating CO (3x) and SO2 (1.5x) but underestimating PM10 (25x).
- Road transport emission factors in EDGAR were mostly overestimated: PM10, CO, NOx (2x); CH4, SO2 (5-20x). Significant spatial distribution differences were noted for energy and industrial sources.
Conclusions:
- EDGAR can serve as a regional reference but is not recommended for precise air quality simulations over Cuba.
- Further validation and improvement of local emission inventories in Cuba are necessary.
- Future air quality modeling in Cuba would benefit from more comprehensive national data reporting.
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