1950-1959 MONTHLY VOLCANIC FORCING IN 45-DEGREE-LAT BANDS FROM N TO S
    1    1   20    1    1    1    1    1    1    1    1    1
    1    1   20    1    1    1    1    1    1    1    1    1
   35   32   29   33   48   45   32   25    1    1   21   22
   35   32   29   33   48   45   32   25    1    1   21   22
    1    1    1    1    1    1    1    1   34   54   50   47
    1    1    1    1    1    1    1    1   34   54   50   47
    1    1    1    1    1    1    1    1    1    1    1    1
    1    1    1    1    1    1    1    1    1    1    1    1
   69   74   68   68   69   66   65   65   67   56   43   34
   69   74   68   68   69   66   65   65   67   56   43   34
    1    1    1    1    1    1    1    1    1    1    1    1
    1    1    1    1    1    1    1    1    1    1    1    1
   34   27   24   30   39   63   64   76   88   86   86   91
   34   27   24   30   39   63   64   76   88   86   86   91
    1    1    1    1    1    1    1    1    1    1    1    1
    1    1    1    1    1    1    1    1    1    1    1    1
   95   92   91   82   74   63   44   45   46   40   37   31
   95   92   91   82   74   63   44   45   46   40   37   31
    1    1    1    1    1    1    1    1    1    1    1    1
    1    1    1    1    1    1    1    1    1    1    1    1
   28   24   23   24   22   20   21   29   42   33   29   25
   28   24   23   24   22   20   21   29   42   33   29   25
    1    1    1    1    1    1    1    1    1    1    1    1
    1    1    1    1    1    1    1    1    1    1    1    1
   22   23   24   20    1    1    1    1    1    1    1    1
   22   23   24   20    1    1    1    1    1    1    1    1
    1    1    1    1    1    1    1    1    1    1    1    1
    1    1    1    1    1    1    1    1    1    1    1    1
    1    1    1    1    1    1    1    1    1    1    1    1
    1    1    1    1    1    1    1    1    1    1    1    1
    1    1    1    1    1    1    1    1    1    1    1    1
    1    1    1    1    1    1    1    1    1    1    1    1
    1    1    1    1    1    1    1    1    1    1    1    1
    1    1    1    1    1    1    1    1    1    1    1    1
    1    1    1    1    1    1    1    1    1    1    1    1
    1    1    1    1    1    1    1    1    1    1    1    1
    1    1    1    1    1    1    1    1    1    1    1    1
    1    1    1    1    1    1    1    1    1    1    1    1
    1    1    1    1    1    1    1    1    1    1    1    1
    1    1    1    1    1    1    1    1    1    1    1    1

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  NOTE: data in (12 months) by (4 lat-zones) by (10 years)
        to get actual values of optical depth use a factor of 1.e-4