Poulter, BenjaminAdams-Metayer, Francis M.Amaral, CibeleBarenblitt, AbigailCampbell, Anthony D.Charles, Sean P.Roman-Cuesta, Rosa MariaD’Ascanio, RoccoDelaria, Erin R.Doughty, CherylFatoyinbo, TemilolaGewirtzman, JonathanHanisco, Thomas F.Hull, MoshemaKawa, S. RandyHannun, ReemLagomasino, DavidLait, LeslieMalone, Sparkle L.Newman, Paul A.Raymond, PeterRosentreter, Judith A.Thomas, NathanVaughn, DerrickWolfe, GlennXiong, LinYing, QingZhang, Zhen2024-08-072024-08-072023-07-10Poulter, Benjamin, Francis M Adams-Metayer, Cibele Amaral, Abigail Barenblitt, Anthony Campbell, Sean P Charles, Rosa Maria Roman-Cuesta, et al. “Multi-Scale Observations of Mangrove Blue Carbon Ecosystem Fluxes: The NASA Carbon Monitoring System BlueFlux Field Campaign.” Environmental Research Letters 18, no. 7 (July 1, 2023): 075009. https://doi.org/10.1088/1748-9326/acdae6.https://doi.org/10.1088/1748-9326/acdae6http://hdl.handle.net/11603/35189The BlueFlux field campaign, supported by NASA’s Carbon Monitoring System, will develop prototype blue carbon products to inform coastal carbon management. While blue carbon has been suggested as a nature-based climate solution (NBS) to remove carbon dioxide (CO₂) from the atmosphere, these ecosystems also release additional greenhouse gases (GHGs) such as methane (CH₄) and are sensitive to disturbances including hurricanes and sea-level rise. To understand blue carbon as an NBS, BlueFlux is conducting multi-scale measurements of CO₂ and CH₄ fluxes across coastal landscapes, combined with long-term carbon burial, in Southern Florida using chambers, flux towers, and aircraft combined with remote-sensing observations for regional upscaling. During the first deployment in April 2022, CO₂ uptake and CH₄ emissions across the Everglades National Park averaged -4.9 ± 4.7 µmol CO₂ m⁻² s⁻¹ and 19.8 ± 41.1 nmol CH4 m⁻² s⁻¹, respectively. When scaled to the region, mangrove CH₄ emissions offset the mangrove CO₂ uptake by about 5% (assuming a 100 year CH₄ global warming potential of 28), leading to total net uptake of 31.8 Tg CO₂-eq y⁻¹. Subsequent field campaigns will measure diurnal and seasonal changes in emissions and integrate measurements of long-term carbon burial to develop comprehensive annual and long-term GHG budgets to inform blue carbon as a climate solution.15 pagesen-USThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.Public Domainhttps://creativecommons.org/publicdomain/mark/1.0/Text