The goal of this presentation is to ignite, and provide a base for, a discussion regarding the locations where eddy covariance flux measurements have been done in the past and where they are being done now, and barriers to and advantages of accessing and utilizing this wealth of data in a best possible manner.

Locations include large networks which already have done detailed inventories, compiled databases and designed very engaging interactive maps, but also smaller networks, tower clusters and individual site, including all long-term stationary site locations, all short-term campaign locations, as well as all mobile transects over land and ocean.

The map below shows locations of all past and present eddy covariance measurements available on the latest date of update, a total of 2126 stationary measurement locations and 2 airborne campaigns with 27 flight tracks.

The exactly overlapping sites (e.g., with identical coordinates) have been removed except for cases where a group indicated that several eddy covariance levels or closely positioned towers were deployed.

It is likely that some of the locations with multiple systems have been removed in this process artificially reducing the count. There is also a possibility that some sites were listed at slightly different locations due to different coordinate rounding at different databases artificially increasing the count.

In addition to the reduction in the count due to missing information about multiple levels or closely clustered sites, there is still a significant amount of missing measurement locations related to: (i) evapotranspiration measurements and related networks; (ii) urban GHG flux measurements; (iii) shipborne and airborne transects from the flux measurements

Thanks a to everyone who contributed to this effort, especially the following organizations: FluxNet, Ameriflux, Asiaflux, CarboEurope, ChinaFlux, ICOS, KiwiFlux, OzFlux; and numerous individual groups and people for their past and future contributions.