Sample JULES4.7 Land Surface Processes Simulation
(by Patrick McGuire, Pier Luigi Vidale, Alberto Martinez de la Torre and Grenville Lister)

  • Monthly Average Precipitation, used as one of the WFDEI driving factors
  • Monthly Average Total Soil Moisture, one of the outputs of the JULES simulation
  • Monthly Average Net Primary Productivity (NPP), one of the outputs of the JULES simulation
  • These animations were produced from JULES4.7 (with 0.5 hour time steps) that dumped the data to disk every 6 hours of simulation calendar time, by using:
    i) a CSH script (see below) that uses CDO to do the monthly averaging for the 11 year data set, which creates a new NETCDF file;
    ii) the interactive software, Panoply (version 4.8.5), that uses the new monthly-averages NETCDF file and saves the PNG animation frames to disk (the MP4 export option didn't work); and
    iii) this ImageMagick command to merge the PNG frames into an animated GIF:
    convert -set delay 0 -colors 256 -dispose 1 -loop 1 precip*.png precip_1979_1989.gif

    CSH monthly-averaging script:
    #! /bin/csh
    set prefix='Euro44_bvv_nancil_CTL-BCJ-NH_jules-vn4.7_u-ar428globeC.6-hourly.'
    set prefix2='Euro44_bvv_nancil_CTL-BCJ_jules-vn4.7_u-ar428globeC_monmean_'

    foreach yr (1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989)
    cdo monmean ${prefix}${yr}.nc ${prefix2}${yr}.nc

    cdo mergetime ${prefix2} ${prefix2} ${prefix2} ${prefix2} ${prefix2} ${prefix2}

    cdo mergetime ${prefix2} ${prefix2} ${prefix2} ${prefix2} ${prefix2} ${prefix2}

    cdo mergetime ${prefix2} ${prefix2} ${prefix2} ${prefix2}


    Contact Info:

    Department of Meteorology, and
    Department of Geography & Environmental Sciences
    University of Reading