Lei Hu1,2, Arlyn E. Andrews2, Kirk W. Thoning2, Colm Sweeney2, John B. Miller2, Anna M. Michalak3, Ed Dlugokencky2, Pieter P. Tans2, Yoichi P. Shiga3, Marikate Mountain4, Thomas Nehrkorn4, Stephen A. Montzka1, Kathryn McKai1,2, Jonathan Kofler1,2, Michael Trudeau1,2, Sylvia E. Michel5, Sebastien C. Biraud6, Marc L. Fischer7, Doug E. J. Worthy8, Bruce H. Vaughn5, James W. C. White5, Vineet Yadav9, Sourish Basu1,2, Ivar R van der Velde1,2

1 Cooperative Institute for Research in Environmental Sciences, University of Colorado-Boulder, Boulder, CO, USA
2 Global Monitoring Division, Earth System Research Laboratory, NOAA, Boulder, CO, USA
3 Department of Global Ecology, Carnegie Institution for Science, Stanford, CA, USA
4 Atmospheric and Environmental Research, Lexington, MA, USA
5 Institute of Arctic and Alpine Research, University of Colorado-Boulder, Boulder, CO, USA
6 Earth and Environmental Sciences Area, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
7 Environmental Technologies Area, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
8 Environment and Climate Change Canada, Toronto, ON, Canada
9 Jet Propulsion Laboratory, NASA, Pasadena, CA, USA

Product Description

This product contains monthly and yearly 1°x1° terrestrial CO2 fluxes between 2007 and 2015 derived from ground-based and airborne CO2 observations made in the North American portion of the NOAA's Global Greenhouse Gas Reference Network and its cooperative institutes. This product is derived using the CarbonTracker-Lagrange inversion framework. Detailed methods are described in Hu et al. (2019). Fluxes are available from 18 inversion ensembles, but we primarily recommend use of ensemble mean fluxes as our best estimate.

Three-hourly fluxes are also available upon request.

Fair Use Statement

This dataset is made freely available to the scientific community. We rely on the ethics and integrity of the user to assure that the authors receive fair credit for their work. Fair credit will depend on the nature of the work and the requirements of the institutions involved. Your use of this product implies an agreement to contact the product authors ( and to discuss the nature of the work and the appropriate level of acknowledgement.

Required Citation

Hu, L., et al. (2019), Enhanced North American carbon uptake associated with El Niño, Science Advances, 5(6), eaaw0076, doi:10.1126/sciadv.aaw0076.

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Product Information

North American terrestrial CO2 fluxes between 2007 and 2015 derived from CarbonTracker- Lagrange

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