# Byrneetal2020

This zip file contains the prior and posterior NEE and Ocean fluxes from Byrne et al. (2020, https://doi.org/10.1029/2019JD032029)

# Warning

Although fluxes are provided for 4 degree x 5 degree gridcells, flux inversions do not provide reliable constraints on fluxes on this scale. In general, aggregation over time and splace is required. Users are strongly encourage to contact Brendan Byrne or Junjie Liu for guidance on the use of these data.

# Contact

Brendan Byrne
email: brendan.k.byrne@jpl.nasa.gov; brendan.k.a.byrne@gmail.com

Junjie Liu
email: junjie.liu@jpl.nasa.gov

# Content

Byrneetal2020.prior_NEE.nc4 -- Prior NEE fluxes based and space(SiB3, CASA, and FLUXCOM). Note a mean year of prior fluxes was repreated for each inversion year
Byrneetal2020.prior_Ocean.nc4 -- Prior Ocean fluxes from ECCO-Darwin
Byrneetal2020.posterior_NEE.GOSAT.only.nc4 -- Posterior NEE fluxes for each GOSAT-only flux inversion
Byrneetal2020.posterior_Ocean.GOSAT.only.nc4 -- Posterior Ocean fluxes for each GOSAT-only flux inversion
Byrneetal2020.posterior_NEE.surface.only.nc4 -- Posterior NEE fluxes for each surface-only flux inversion
Byrneetal2020.posterior_Ocean.surface.only.nc4 -- Posterior Ocean fluxes for each surface-only flux inversion
Byrneetal2020.posterior_NEE.TCCON.only.nc4 -- Posterior NEE fluxes for each TCCON-only flux inversion
Byrneetal2020.posterior_Ocean.TCCON.only.nc4 -- Posterior Ocean fluxes for each TCCON-only flux inversion
Byrneetal2020.posterior_NEE.GOSAT.surface.TCCON.nc4 -- Posterior NEE fluxes for each GOSAT+surface+TCCON flux inversion
Byrneetal2020.posterior_Ocean.GOSAT.surface.TCCON.nc4 -- Posterior Ocean fluxes for each GOSAT+surface+TCCON flux inversion

# Paper Reference

Byrne, B., et al. "Improved constraints on northern extratropical CO2 fluxes obtained by combining surface based atmospheric CO2 measurements." Journal of Geophysical Research: Atmospheres (2020): e2019JD032029.

# Acknowledgments

Brendan Byrne was supported by an appointment to the NASA Postdoctoral Program at the Jet Propulsion Laboratory, administered by Universities Space Research Association under contract with NASA. JL was supported by the NASA OCO2/3 science team program NNH17ZDA001N-OCO2. Kevin W Bowman was supported by the NASA Carbon Monitoring System (CMS) project (NNH16ZDA001N-CMS). The research carried out at the Jet Propulsion Laboratory, California Institute of Technology, was under a contract with the National Aeronautics and Space Administration. Resources supporting this work were provided by the NASA High-End Computing (HEC) Program through the NASA Advanced Supercomputing (NAS) Division at Ames Research Center. The JR-STATION dataset is available from the Global Environmental Database, hosted by Center for Global Environmental Research (CGER), National Institute for Environmental Studies (NIES) (http://db.cger.nies.go.jp/portal/geds/atmosphericAndOceanicMonitoring). TCCON data were obtained from the TCCON Data Archive, hosted by CaltechDATA (http://tccondata.org). FLUXCOM products were obtained from the Data Portal of the Max Planck Institute for Biochemistry [https://www.bgc-jena.mpg.de]. MERRA-2 products were downloaded from MDISC [https://gmao.gsfc.nasa.gov/reanalysis/MERRA-2/], managed by the NASA Goddard Earth Sciences (GES) Data and Information Services Center (DISC). GOSAT OCFP v7.1 X CO 2 retrievals were downloaded from the Copernicus Climate Change Service website (https://cds.climate.copernicus.eu). Version 4.1 of the GLOBALVIEW plus package was downloaded from http://www.esrl.noaa.gov/gmd/ccgg/obspack/. ESA CCI soil moisture data was downloaded from https://www.esa-soilmoisture-cci.org/. Odiac emissions dataset was provided by T. Oda of Colorado State University, Fort Collins CO, USA/Global Monitoring Division, NOAA Earth System Research Laboratory, Boulder CO, USA. Odiac project is supported by Greenhouse Gas Observing SATellite (GOSAT) project, National Institute for Environmental Studies (NIES), Japan. We thank S. Basu for providing downscaled ODIAC emissions. We thank T. Machida, H. Matsueda, Y. Sawa, and Y. Niwa for providing CONTRAIL measurements. The TCCON site at Runion Island is operated by the Royal Belgian Institute for Space Aeronomy with financial support in 2014, 2015, 2016, 2017, 2018 and 2019 under the EU project ICOS-Inwire and the ministerial decree for ICOS (FR/35/IC2) and local activities supported by LACy/UMR8105 Universit de La Runion. The TCCON project for Rikubetsu site is supported in part by the GOSAT series project. The Ascension Island TCCON station has been supported by the European Space Agency (ESA) under grant 4000120088/17/I-EF and by the German Bundesministerium fur Wirtschaft und Energie (BMWi) under grants 50EE1711C and 50EE1711E. We thank the ESA Ariane Tracking Station at North East Bay, Ascension Island, for hosting and local support. GOSAT and OCO-2 ACOS retrievals were downloaded from the CO2 virtual science data environment: https://co2.jpl.nasa.gov/