Merged point measurements of atmospheric gas concentrations acquired during the Atmospheric Carbon and Transport - America (ACT-America) project flights are now available from all four seasonal flight campaigns (Summer 2016, Winter 2017, Fall 2017, and Spring 2018). The merged data products are composed of continuous in situ measurements of atmospheric carbon dioxide (CO2), methane (CH4), carbon monoxide (CO), ozone (O3), and ethane (C2H6) that were averaged to uniform intervals and merged with aircraft navigation and meteorological variables as well as trace gas concentrations from discrete flask samples collected with the Programmable Flask Package (PFP).
The ACT-America project is a NASA Earth Venture Suborbital-2 mission to study the transport and fluxes of atmospheric carbon dioxide and methane across three regions in the eastern United States. Each flight campaign will measure how weather systems transport these greenhouse gases. Ground-based measurements of greenhouse gases were also-collected. Better estimates of greenhouse gas sources and sinks are needed for climate management and for prediction of future climate. See all ORNL DAAC datasets from ACT-America.
Data Citation: Davis, K.J., M.D. Obland, B. Lin, T. Lauvaux, C. O'dell, B. Meadows, E.V. Browell, J.H. Crawford, J.P. DiGangi, C. Sweeney, M.J. McGill, J. Dobler, J.D. Barrick, and A.R. Nehrir. 2018. ACT-America: L3 Merged In Situ Atmospheric Trace Gases and Flask Data, Eastern USA. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1593
Data Center: ORNL DAAC