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CMA report

CMA report. Xueshun Shen WGNE-29, Melbourne, 10-14 Mar.2014. Outline. New HPC Production systems Current status The coming upgrades in 2014/15 Research activities New dynamical core New Chinese satellite. CMA New HPC System SS1 started operation since July/2013 SS2 is ready soon.

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CMA report

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  1. CMA report Xueshun Shen WGNE-29, Melbourne, 10-14 Mar.2014

  2. Outline • New HPC • Production systems • Current status • The coming upgrades in 2014/15 • Research activities • New dynamical core • New Chinese satellite

  3. CMA New HPC System SS1 started operation since July/2013 SS2 is ready soon IBM Flex System P460

  4. Current CMA Operational NWP System No big change in 2013 Spectral model from ECMWF Main production system CMA-developed GRAPES • GLB 10-day deterministic: • GRAPES_GFS 50km • Parallel run vs. T639 • Meso-scale : • GRAPES_Meso 15km • GRAPES_Meso 5km • Only seasonal run • Typhoon forecast: • GRAPES_Meso 15km • Rapid update: • GRAPES_RAFS 15km • GLB 10-day deterministic: • T639L60 • Global ensemble forecast: • T213L31, M15 • Global Typhoon forecast: • T213L31 Data assimilation: GSI Data assimilation: GRAPES_3DVAR

  5. The coming upgrades of operational systems

  6. Concentrated upgrades by the end of May 2014: renew4 product systems

  7. Sep./2014: GRAPES_GFS upgrade 50kmL36 Global 3DVAR • Model-space 3DVAR analysis system available • Revised to solve the wind-mass balance equation in terrain-following model grid space rather than by virtue of using ancillary pressure level • Over the tropics: linear balance equation + statistics • Implementation of Var-QC for conventional data • New GNSS/RO QC • Optimization of vertical correlation structure of background error Global Model • Bug fix in shallow cumulus convection & radiation schemes • 2nd –order finite difference scheme on non-uniform grid • bug fix in scalar advection scheme (PRM) • Monotonic spline to constrained cubic interpolation for moist variables • Much faster GCR solver

  8. Parallel run: GRAPES_GFS 50kmL36 Initial: 12UTC May 01-Sep.15,2013 Worse than T639 Over East Asia Redmeans better Better than T639 Over SH and tropics

  9. In 2015: new version of GRAPES_GFS 25kmL58 Redmeans better Comparing with the parallel-run GRAPES_GFS 50kmL36 Initial: 12UTC May 2013

  10. Research Activitiestoward future CMA NWP

  11. Fundamentals: nodal type conservative formulation based on local high-order reconstruction (Ii & Xiao,2009) • Multi-moments: • Point values • Integrated values • Derivatives Conservation law Mesh element Reconstruct flux function Riemann problem

  12. Progresses of MCV dynamical core • The 2-D compressible non-hydrostatic flow • Cold bubble • Internal gravity wave • Steep mountain model intercomparison project (Satomura et al, Annuals of Disas. Prev. Res. Inst., Kyoto Univ., No. 46B, 2003) • Schär mountain • The global shallow water model at various quasi-uniform spherical grids Li, Chen, Shen and Xiao, et al (MWR, 2013) Li, Shen et al (AAS, 2013) Chen, Li, Shen and Xiao ( JCP, 2013) Chen, Bin, Xiao, Li and Shen (QJRMS, 2013)

  13. Chinese Satellites

  14. New baby: FY-3CLaunched on 23, Sept. 2013 ok FY-3C, as the first operational one of the 2nd generation of FengYun polar-orbiting satellites, is the successor of the R&D satellites FY-3A/B working in orbit

  15. FY-3C instruments(12) • Major Improvements compared with FY-3A/B: • A GNSS Occultation Sounder added for GPS sounding • MWTS sounding channels increased from 4 to 13, while spatial resolution from 70Km to 20Km • MWHS sounding channels increased from 5 to 15, with 118GHz O2 absorbing band new added • Auto solar-tracking capability for SIM to improve measurement accurcy • Better performance for at least 60% of instrument specifications • Longer design life, more reliable for operational guarantee

  16. THANK YOU

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