1Assistant Professor, Department of Geography, School of Geosciences, Bharathidasan University, Tiruchirappalli
2Associate Professor & Head, Department of Geography, Govt., Arts College (Autonomous), Coimbatore
3Guest Lecturer, School of Geosciences, Bharathidasan University
*Email: jegankumar@gmail.com
Online published on 7 December, 2012.
The spatial distribution of rainfall shows a unique pattern in Salem and Namakkal Districts. By analyzing the long term rainfall data, the results shows that Summer contributes 18.73%, Southwest monsoon produces 40% and North east 40%. The average mean rainfall of the study area is 844.49mm. The variability indicates higher variability in winter to compare other seasons. Similarly precipitation ratio is carried out to bring out the anomalies in the distribution and the rainfall frequency is calculated to understand the occurrences. GIS is effectively used in this attempt to compute and produce maps.
Rainfall, rainfall variation, Salem district rainfall, Namakkal district rainfall
