The eddy-covariance flux measurement sources its information from an upstream surface, the footprint. Footprint characteristics provide the biophysical surface information of this time-varying area, necessary to distinguish temporal effects (e.g., biological activity) from spatial effects (e.g., changing wind direction). This data product is bundled into DP4.00200, Bundled data products - eddy covariance, and is not available as a stand-alone download. https://data.neonscience.org/data-products/DP4.00201.001