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Model

Model. RegCM2_NCC, developed by China National Climate Center and City University of Hong Kong, based on the NCAR RegCM2 . 20 vertical levels , 60-km horizontal resolution and a domain size of 1 35  1 65 grid points .

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Model

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  1. Model • RegCM2_NCC, developed by China National Climate Center and City University of Hong Kong, based on the NCAR RegCM2. • 20 vertical levels, 60-km horizontal resolution and a domain size of 135 165 grid points. • Initial and lateral boundary conditions:ECMWF ERA40 reanalysis data. Sea-surface temperaturedata: NOAA Optimum Interpolation SST V2 weekly mean data, with a 1 spatial resolution. • Cumulus parameterization: Anthes-Kuo • Each experiment is an ensemble run with 8 members of different starting days. The experiments are performed for the period of 1 April to 30 June.

  2. Total Precipitation (mm) in May & June 1998Left: Control Experiment (CTRL) Right: GPCP Observations May June

  3. The Upstream Areas Surface heating Topography, landuse Surface heating IND SCS ICP BOB latent heating SST , Convection

  4. Precipitation Differences (CTRL-EXP) May June

  5. May Precipitation (20-25N, 110-120E) CTRL EXP

  6. Rainfall Diff (EXP-CTRL) in May IChfxBOBqfx INDhfx IChfx + BOBqfx IChfx+ BOBqfx+INDhfx

  7. Rainfall Diff (EXP-CTRL) in June IChfxBOBqfx INDhfx IChfx + BOBqfx IChfx+ BOBqfx+INDhfx

  8. Total Precipitation over Yangtze River region (28-33N,110-120E) and south China (22-27N, 108-118E) Yangtze South China

  9. Difference in May 1998 rainfall (Expt minus CTRL)

  10. Difference in Jun 1998 rainfall (Expt minus CTRL)

  11. Difference in May 1998 rainfall(Expt minus CTRL) QBOB QSCS QNWP

  12. Difference in Jun 1998 rainfall(Expt minus CTRL) QBOB QSCS QNWP

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