Global Aerosol Climatology (GISS/NASA)
X axis: whole world in 360 1.00° steps, first point at 179.50° W, last point at 179.50° E
Y axis: regular grid with 180 1.00° steps, first point at 89.50° S, last point at 89.50° N

Monthly data available from Aug1981 to Jun2006 ( 299 months)
Variable a (Angstrom exponent) in 1

Get grid points, average area or generate subset

Latitude:	°N - °N
Longitude:	°E - °E
Boundaries:	halfway grid points interpolated
Make:	average set of grid points subset of the field
Demand at least:	% valid points in this region

Create a field with lower time resolution

New time scale:	annual (Jul-Jun) annual (Jan-Dec) seasonal monthly 10-daily 5-daily daily
New variable:	mean sd sum sum above sum below number min time of min max time of max first time last time of aerosol Angstrom exponent
Threshold:	no cut less than greater than 1 percentile normal 1971-2000
Minimum:	% valid data

getfieldtype: please ask me to add "a" to the lists in getfieldtype

Construct a statistical forecast model from this field

Please consider downloading this field from the authoritative site.

If you really want to get it here, GACP aerosol Angstrom exponent is available as GrADS .ctl and gzipped .dat files (size 73.9105 MB)
Alternatively, you can generate a gzipped netCDF file of the same size.