Biogenic Emissions Inventory System (BEIS) Modeling
First developed in 1988, BEIS estimates volatile organic compound (VOC) emissions from vegetation and nitric oxide (NO) emissions from soils. Because of resource limitations, recent BEIS development has been restricted to versions that are compatible with the Sparse Matrix Operational Kernel Emissions (SMOKE) system. Non-air-quality model users may wish to consider GloBEIS.
Versions of BEIS include the following:
- BEIS3.12 -- Most recent version of BEIS. Assembled as a stand-alone module to the Sparse Matrix Operational Kernel Emissions (SMOKE) system for generating gridded, hourly emissions in a format consistent for air quality modeling.
- BEIS3.11 -- Assembled as a stand-alone module to the Sparse Matrix Operational Kernel Emissions (SMOKE) system for generating gridded, hourly emissions in a format consistent for air quality modeling. BEIS3.11 revises the soil NO algorithm in BEIS3.10 to better distinguish between agricultural and nonagricultural land, and to limit adjustments from temperature, precipitation, fertilizer application, and crop canopy to the growing season and to areas of agriculture. A leaf shading algorithm is added for estimating methanol emissions from non-forested areas.
- BEIS3.10 -- Research version developed for the 2002 release of the Community Multiscale Air Quality (CMAQ) modeling system. It includes a 1-km vegetation database that resolves forest canopy coverage by tree species; emission factors for 34 chemicals including 14 monoterpenes and methanol; a soil NO algorithm dependent on soil moisture, crop canopy coverage, and fertilizer application; and, speciation for the CB4, RADM2, and SAPRC99 mechanisms
(Pierce et al., 2002).
- BEIS3.09 -- Default version currently in SMOKE (Vukovich and Pierce, 2002) (PDF, 7 pp, 38KB, About PDF).
- BEIS2.3 -- The latest PC-version of BEIS for generating hourly estimates at the county-level. Released in 1998, BEIS2.3 has received a minimal amount of maintenance. Downloads are available at Atmospheric Modeling Division (AMD) anonymous ftp site.
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Some relevant EPA/NOAA papers and presentations ...
- Advances in emission modeling of airborne substances (PDF, 1 pp, 455KB)
- The importance of biogenic emissions to regional air quality modeling (PDF, 1 pp, 361KB)
- Integration of the Biogenic Emissions Inventory System (BEIS3) into then Community Multiscale Air Quality Modeling System
- Intercomparison of alternative vegetation databases for regional air quality modeling
- Biogenic Trace Gas Emissions in the United States (PDF, 1 pp, 1.25MB)
- Development of a 1-km vegetation database
- Regional isoprene modeling for OZIE (PDF, 20 pp, 1.78MB)
- Lightning NO emissions (PDF, 18 pp, 1.48MB)
- Nitrogen emissions from agriculture (PDF, 21 pp, 264KB)
- 1997 estimates for the U.S.
- Release of BEIS2.3
Download data and programs via ftp...
Interesting non-EPA sites
Please direct your questions or comments to pierce.tom@epa.gov
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