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Data Assimilation in the NCEO (National Centre for Earth Observation)

Data Assimilation in the NCEO (National Centre for Earth Observation). Peter Jan van Leeuwen Data-Assimilation Research Centre DARC University of Reading. NCEO Structure. Global carbon cycle. Atmospheric composition. Cryosphere and polar oceans. Hazardous weather and water resources.

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Data Assimilation in the NCEO (National Centre for Earth Observation)

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  1. Data Assimilation in the NCEO(National Centre for Earth Observation) Peter Jan van Leeuwen Data-Assimilation Research Centre DARC University of Reading

  2. NCEO Structure Global carbon cycle Atmosphericcomposition Cryosphere andpolar oceans Hazardous weather and water resources EO for climate diagnosisand prediction (Integrating Theme) Dynamic Earth and geo-hazards Data assimilation and treatment of uncertainty(Cross Cutting Theme) EO informatics(Underpinning Theme) Training Capability and knowledge exchange Wider NERC supported EO programme

  3. What is data assimilation? Bayes theorem: Solution is pdf! NO INVERSION !!!

  4. High-resolution weather predictionMet Office system / 1.5km (c) MeteoFrance

  5. The Carbon Cycle Data Assimilation System Assimilation of FAPAR and atm. CO2 flask data to optimise parameter values (and uncertainties) of a process-based terrestrial ecosystem model (BETHY). (Scholze et al., Bristol)

  6. Posterior uncertainties on parameters Relative Error Reduction 1–opt/prior

  7. Net C fluxes and their uncertainties Long term mean fluxes to atmosphere (gC/m2/year) and uncertainties

  8. Forests and climate change Science 320, 1444 (2008); Gordon B. Bonan, et al. Forests and Climate Change

  9. INTRO »CONTEXT» DATA ASSIMILATION» SCALING ISSUES » SOLUTION CO2 CH4 N2O SF6 CO H2 222Rn Scales of Flux Observations

  10. Rank histogram truth vs. particles1000 dimensional system

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