Urban Eddy Covariance – The INFLUX Network

Abstract. The eddy covariance method is used by various disciplines to measure surface-atmosphere fluxes of both vector and scalar quantities. However, eddy covariance observations are uncommon in urban areas. One of the few long-term and ongoing urban flux experiments is the Indianapolis Flux Experiment (INFLUX), which has successfully deployed eddy covariance towers at eleven locations measuring fluxes from various land cover types in and around the urban environment. The data collected from this network of towers has been used to determine urban greenhouse gas emissions, assess transport model performance, and separate anthropogenic from biogenic sources. This paper describes the available data associated with the INFLUX eddy covariance network, provides details of data processing and quality control, and provides site attributes needed to interpret the data. For access to the various data products from the INFLUX eddy covariance work, please see the data availability section below.