ALN logo; link to Arid Lands Newsletter Home page No. 51, May/June 2002
Using geospatial technologies to understand dryland dynamics

Bryant Figure 2: Maps of contoured AI values for Etosha Pan region

The first map, to the right, shows absorbing aerosol index (AI) values from N7-TOMS data (that is, data collected by the Total ozone mapping spectrometer aboard the Nimbus-7 satellite). these values are comparable to AI index values for other major southern Hemisphere dust sources. AI
This second map shows AI values derived from EP-TOMS data (that is, data collected by the Total ozone mapping spectrometer aboard the Earth Probe satellite. These values are lower than those derived from the N7-TOMS data but are still consistent with indications of a major regional dust source.

 

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