TY  - JOUR
T1  - Rainfall Distribution and Change Detection in Northern Nigeria
AU - E. Morakinyo, Tobi AU - B. Ogungbenro, Stephen 
JO  - Research Journal of Applied Sciences
VL  - 8
IS  - 1
SP  - 27
EP  - 32
PY  - 2013
DA  - 2001/08/19
SN  - 1815-932x
DO  - rjasci.2013.27.32
UR  - https://makhillpublications.co/view-article.php?doi=rjasci.2013.27.32
KW  - Climate change
KW  -climate regime
KW  -rainfall variability
KW  -zone
KW  -regimes
AB  - This study approached climate and climate change study using 
  the rainfall distribution over each climatological zone of Northern Nigeria. 
  Nigeria today boasts of not <44 weather observation stations which provide 
  measurement of rainfall amount for different locations across the country. Data 
  were collected for 90 years (1910 to 1999) for all the weather observation stations 
  that falls in the Sahel and Sudan Savannah zones of Nigeria while a subdivision 
  was made to three non-overlapping climatic regimes of 30 years viz 1910 to 1939, 
  1940 to 1969 and 1970 to 1999. Statistical methods were utilized to justify 
  any such change in the averaged weather. The trend and variability of averaged 
  zonal rainfall was investigated using the probability density function, Wilcoxon 
  Signed-Rank test, Paired Sample test and Mann Whitney test which all form the 
  non-parametric components of the test in order to investigate variations and 
  detect the change points. Results show common change points and transitions 
  from wet to dry (downward shift) and vice versa in both zones. Statistical tests 
  performed on the data show that rainfall variation over the Sahel is significant 
  (p<0.05) between pairs of regimes (1st and 3rd, 2nd and 3rd) while it is 
  not significant (p<0.05) between 1st and 2nd. Over the Sudan, rainfall variability 
  between climate regimes were not statistically different at 95% confidence interval. 
  Suggestions were therefore made at the end of the study on the use of the contained 
  information for socio-economic improvement and agricultural development of the 
  zones.
ER  -