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     Air
    Pollution and Climate Modeling 
        
    ERG has developed
    several models used for high-spatial resolution estimates of the transfer
    of air pollutants, CO2, and water vapor between the atmosphere
    and the land surface in complex terrain. We can modify and apply these
    models to meet your needs for estimates of pollutant deposition, net carbon
    assimilation and evapotranspiration. 
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     Air Pollution and
    Meteorological Measurements 
       
    We design, deploy, and
    maintain environmental measurement systems for climate monitoring, air
    pollution monitoring, and trace gas flux measurement by micrometeorological
    methods. We conduct measurement programs in conjunction with model
    development for specific applications and locations. We also can train your
    staff to operate a measurement system and provide software tools for data
    analysis. 
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     Ecosystem
    Measurements and Modeling 
      
    ERG develops and applies
    models for simulating ecosystem processes and biogeochemistry at the stand,
    watershed, and regional level. We also make the field measurements and
    develop the geospatial databases necessary to parameterize and validate
    models. 
      
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     GIS,
    RS, Spatial Analysis and Modeling 
      
    We provide a broad range
    of GIS and spatial analysis services including: geospatial database design
    and development, development of custom spatial analysis and modeling
    software, distributed ecosystem process modeling, interpretation of
    remotely sensed imagery, ground-truth assessments, ecosystem inventory,
    cartographic design and production. 
      
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