Characterization of the Sahel: implications of correctly calculating interannual coefficients of variation (CoVs) from GAC NDVI values

$61.74 plus tax (Refund Policy)

Buy Article:


Abstract. Use of Digital Number (DN) representation of Normalized Difference Vegetation Index (NDVI) values for calculation of the Coefficient of Variation (CoV) of NDVI produces incorrect results. We show how CoV images correctly calculated directly from NDVI values differ from images incorrectly calculated through the use of DNs, and explore the ways in which the legitimate calculation of CoV allows us to revise and refine our perceptions of what we mean by the term 'Sahel'.

Document Type: Research Article


Publication date: December 1, 1997

More about this publication?
Related content

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more