Abstract
We assessed the compatibility of three Advanced Spaceborne Thermal Emission and Reflection Radometer (ASTER) based Enhanced Vegetation Index (EVI) products generated in the GEO Grid system to Moderate Resolution Imaging Spectroradiometer (MODIS) EVI. The three products were two forms of the two-band EVI with ASTER red and NIR bands but without a blue band and the original, three-band EVI computed with ASTER red and NIR, and MODIS blue reflectances. Our assessment results showed good compatibilities of all the three ASTER EVI products with MODIS EVI, suggesting potential for synergistic applications of multi-resolution EVI.
Highlights
Satellite remote sensing is considered to be one critical component in developing and improving our understanding of the Earth’s system
The performance of GEO Grid ASTER Enhanced Vegetation Index (EVI) products was evaluated by comparing their values to those of Moderate Resolution Imaging Spectroradiometer (MODIS) EVI over the seven FLUXNET sites covering a wide range of land cover types
We evaluated the impact of aggregation methods on ASTER Normalized Difference Vegetation Index (NDVI) and
Summary
Satellite remote sensing is considered to be one critical component in developing and improving our understanding of the Earth’s system. Numerous studies have shown the utility of satellite remote sensing in ecosystem dynamics studies in relation to climate change, including monitoring of ecosystem disturbances, biodiversity assessments, and carbon cycle modeling (e.g., [1,2,3]). In these studies, satellite remote sensing was often used in combination with a network of point-based ground measurements for their regional and temporal extrapolations. GEO Grid is being equipped with a large amount of both ground observational and satellite remote sensing data, and new advanced algorithms are being added for effective processing, integration, and assimilation of these data to generate higher-level products for the Earth system science.
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