Improving and extending CMS land surface carbon flux products including estimates of uncertainties in fluxes and biomass. Jim Collatz, Randy Kawa, Lesley.

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Presentation transcript:

Improving and extending CMS land surface carbon flux products including estimates of uncertainties in fluxes and biomass. Jim Collatz, Randy Kawa, Lesley Ott, Fanwei Zeng, Al Ivanoff, David Liu, Zhengxin Zhu NASA's GSFC 15min See Poster Session at lunch for more details and discussions

GSFC CASA-GFED3 System Satellite data constrained diagnostic land carbon cycle model, monthly fluxes, MERRA meteorology, satellite veg MERRA 3 hrly scaling of GPP (solar radiation), RE (temperature), and fire emissions GEOS5/PCTM transport, GEOS-Chem adjoint inversion OSSEs satellite CO2 Ocean, Fossil Fuel fluxes Live Carbon Pools Dead Carbon Pools Atmospheric Carbon NPP Mortality Respiration Fire hours temperature solar radiation maps of sources/sinks maps of CO2 variability Uncertainty (1  ) July NBP (gC/m 2 /mo) model improvements e.g. ASCENDS sampled with errors monthly NPP and Rh daily fire

Flux and Biomass Uncertainty 2011 Jul NBP Uncertainty (1  ), gC m -2 mo -1 July NBP (gC/m 2 /mo)\ Forrest Aboveground Biomass, MgC/ha Parameter sensitivity Monte Carlo Ensemble Forrest Aboveground Biomass Uncertainty (1 , MgC/ha 2011 Jul NBP, gC m -2 mo - 1

Biomass Comparisons Tropical (Saatchi et al., 2011, GLASS) Temperate/Boreal (Thurner et al., 2013, ASAR) CONUS (Blackard et al., 2008, MODIS)

NOAA Surface Flask and Continuous Measurement Comparisons (PCTM)

TCCON Column CO 2 Comparisons (PCTM) Daily with sink Monthly

Atmospheric Profile Comparisons HIPPO Phase II, Oct & Nov 2009 (GEOS-5) GOSAT Comparisons (GEOS-5)

Sensitivity: Surface versus Column (PCTM) FIRE – NO FIRE August 2010 Surface Column >18ppm <4ppm

Atmospheric Inversion Comparisons CarbonTracker Monthly Anomalies

Flux Tower Comparisons GPP RE NEE

Product production history and plan CMS web site: DATA Products: Monthly 0.5 o NPP, RH, Fire Emissions, Fuel wood emissions 3 hourly 1x1.25 o GEE (-GPP), NEE (RE-GPP), Fire emissions Phase Jan ’ Feb ‘ Sep ‘ anticipate Summer ‘ Flux uncertainties released upon request early ‘13 Biomass and uncertainties available but not posted or requested yet