Assessing the accuracy of satellite derived global and national urban maps in Kenya.

Remote Sensing of Environment
Andrew J TatemS I Hay

Abstract

Ninety percent of projected global urbanization will be concentrated in low income countries (United-Nations, 2004). This will have considerable environmental, economic and public health implications for those populations. Objective and efficient methods of delineating urban extent are a cross-sectoral need complicated by a diversity of urban definition rubrics world-wide. Large-area maps of urban extents are becoming increasingly available in the public domain, as are a wide-range of medium spatial resolution satellite imagery. Here we describe the extension of a methodology based on Landsat ETM and Radarsat imagery to the production of a human settlement map of Kenya. This map was then compared with five satellite imagery-derived, global maps of urban extent at Kenya national-level, against an expert opinion coverage for accuracy assessment. The results showed the map produced using medium spatial resolution satellite imagery was of comparable accuracy to the expert opinion coverage. The five global urban maps exhibited a range of inaccuracies, emphasising that care should be taken with use of these maps at national and sub-national scale.

References

Jun 3, 2004·The Lancet Infectious Diseases·Simon I HayRobert W Snow
Jul 27, 2004·Journal of Urban Health : Bulletin of the New York Academy of Medicine·A J Tatem, S I Hay
Dec 21, 2004·Nature Reviews. Microbiology·Simon I HayRobert W Snow
Jun 9, 2005·Tropical Medicine & International Health : TM & IH·J A OmumboD J Rogers

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Citations

Jan 7, 2014·International Journal of Health Geographics·Andrew J TatemZoë Matthews
Aug 26, 2014·Applied Geography·Catherine LinardMarius Gilbert
Dec 12, 2012·Malaria Journal·Qiuyin QiAndrew J Tatem
Mar 22, 2012·International Journal of Health Geographics·Catherine Linard, Andrew J Tatem
Oct 22, 2010·Environmental Monitoring and Assessment·Luke Omondi OlangJosef Fürst
Sep 16, 2010·International Journal of Health Geographics·Catherine LinardAndrew J Tatem
Feb 19, 2013·PloS One·Andrea E GaughanAndrew J Tatem
Oct 23, 2008·Population Health Metrics·Abdisalan M NoorRobert W Snow
Dec 7, 2007·Infectious Disease Clinics of North America·Cristian SpeilNancy Khardori
Oct 6, 2016·Scientific Reports·Nita BhartiMatthew J Ferrari
Jul 21, 2017·International Journal of Health Geographics·Dana R ThomsonMarcia C Castro

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