AOD input explained

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imagery/i.atcorr/i.atcorr.html

@@ -343,11 +343,12 @@ refractive index.</td>
 <h3>D. Aerosol concentration model (visibility)</h3>
 
 <blockquote>If you have an estimate of the meteorological parameter visibility
-v, enter directly the value of v [km] (the aerosol optical depth will be
+v, enter directly the value of v [km] (the aerosol optical depth (AOD) will be
 computed from a standard aerosol profile).
 <p>If you have an estimate of aerosol optical depth, enter v=0 for the
-visibility and enter the aerosol optical depth at 550nm (iaer means 'i' for input
-and 'aer' for aerosol).
+visibility and comma-separated enter the aerosol optical depth at 550nm
+(iaer means 'i' for input and 'aer' for aerosol), for example:<br>
+v=0, 0.112
 <p>NOTE: if iaer=0, enter v=-1.</blockquote>
 
 <h3>E. Target altitude (xps), sensor platform (xpp)</h3>