I. J. Ekpoh, “Estimating the Sensitivity of Crop Yields to Potential Climate Change in North-Western Nigeria,” Global Journal of Pure and Applied Sciences, Vol. 5, No. 3, 1999, pp. 303-308.

has been cited by the following article:

• TITLE: Spatial and Temporal Variation of Normalized Difference Vegetation Index (NDVI) and Rainfall in the North East Arid Zone of Nigeria

  AUTHORS: Christiana F. Olusegun, Zachariah D. Adeyewa

  KEYWORDS: NDVI; Onset of Greenness; Cessation of Greenness; Rainfall

  JOURNAL NAME: Atmospheric and Climate Sciences, Vol.3 No.4, August 26, 2013

  ABSTRACT: This study examines the spatial and temporal variation of onset and cessation of rainfall and greenness in the North East Arid Zone of Nigeria. Onset and cessation of greenness dates were determined from mean monthly time series of Normalized Difference Vegetation Index (NDVI) using Advance Very High Resolution Radiometer (AVHRR) data for five meteorological stations in the zone for a period of nineteen years (1981-1999). Lowest growing days of six weeks were observed in Nguru (12.53°N, 10.28°E, alt.343 m), Potiskum (11.42°N, 11.02°E, alt.415 m) and Maiduguri (11.51°N, 13.05°E, alt. 354 m), while Yola (12.28°N, 9.14°E, alt.174 m) and Bauchi (10.17°N, 9.49°E, alt.609 m) have growing days of 15 and 16 weeks respectively. Highest rate of greenness of 0.18/month was observed inMaiduguriwhile the lowest rate of green-up of 0.07/month was observed in Bauchi. Similarly, highest rate of senescence (0.08/month) was observed in Bauchi while lowest rate of senescence (0.04/month) was observed in Nguru.