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Australian Rainfall (112.5°-155°E,43.4°S-11°S)



Corr. Coeff. of observed rainfall PCs and obs SSTA (using 180 months)

  • 1st EOF of AU rainfall (explained variance 37%)
  • 2nd EOF (explained variance 14%)
  • 3rd EOF (explained variance 11%)




    Statistical Correction

  • Using all months
      + Simultaneous relationships with observed data (all months from 1987 to 2001)
      + Regress OBS Rain PCs onto LIM SST PCs
      + Regress OBS Rain PCs onto POAMA SST PCs

  • Seasonal Analysis
      + Methods
      + DJF     LT2     LT8
      + MAM     LT2     LT8
      + JJA     LT2     LT8
      + SON     LT2     LT8

  • APCC statistical downscaling results



    Characteristics of POAMA Rainfall

  • Using all months from 1987 to 2001
      + Mean rainfall
      + Corr.Coeff. and Skill Score (3 month running means)
       (Note: The data unit is mm per day and we hadn't normalized the data by each month STD at this stage)
      + EOF patterns (columns: OBS POAMALT2 POAMALT8 ; rows: EOFs)
      + PCs
      + Variance explained by firth 20 EOFs in %


  • Seasonal Analysis
      + Corr. Coeff.
      + Ratio of the amplitude (STD)
      + Trends (columns: OBS POAMALT2 POAMALT8 ; rows: DJF MAM JJA SON)
      + Regression of observed rainfall onto observed SST PCs    normalized by monthly std    unnormalized     SON SST EOFs

      + EOF patterns in SON (columns: OBS POAMALT2 POAMALT8 ; rows: EOFs)
      + OBS PCs in SON
      + Variance explained by firth 20 EOFs in %


      + EOF patterns in JJA (columns: OBS POAMALT2 POAMALT8 ; rows: EOFs)
      + PCs in JJA
      + Variance explained by firth 20 EOFs in %