 

Field
TOMS aerosol
X axis: whole world in 288 1.25° steps, first point at 180.00° W, last point at 178.75° E Y axis: regular grid with 120 1.00° steps, first point at 60.00° S, last point at 59.00° N Monthly data available from Jan1980 to Dec2001 ( 264 months) Variable ai (dust data) in Construct a statistical forecast model from this field Compute anomalies
Compute zonal mean
If you really want to get it here,
TOMS aerosol is available as
GrADS .ctl and gzipped
.dat
files (size 0.528462 MB) 
© KNMI
