Long Term Trend Analysis of Mega Cities in Northern India using Rainfall Data

Land use change is occurring rapidly and it has huge impact on the local climate. The study area includes 17 mega cities located within 25 degree 18'00''N to 34 degree 5'24"N of India. The current study is based on trend of historical rainfall which is analyzed by Mann-Kenda...

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Bibliographic Details
Published in:Indian journal of science and technology 2015-02, Vol.8 (3), p.247-247
Main Authors: Meena, Pramod Kumar, Khare, Deepak, Shukla, Rituraj, Mishra, P. K.
Format: Article
Language:English
Subjects:
Estimators
Homogeneity
India
Mathematical analysis
Rainfall
Slopes
Trend analysis
Trends
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Summary:Land use change is occurring rapidly and it has huge impact on the local climate. The study area includes 17 mega cities located within 25 degree 18'00''N to 34 degree 5'24"N of India. The current study is based on trend of historical rainfall which is analyzed by Mann-Kendall method using monthly rainfall data (1901-2011). Before using this method, pre-whitening method was applied for removing the error from the data. Sen's Slope estimator is used to derive the magnitude of the data. Standard Normal Homogeneity Test (SNHT) was used for identifying the break point of the data series. Finally true slope of an existing trend and variance of the residuals was calculated for all selected cities using Sen's method. Increasing trend has been found in Jaipur, Jodhpur, Faridabad, Meerut, Ghaziabad, Delhi, Chandigarh, Ludhiana, Amritsar, Srinagar whereas, Allahabad, Varanasi, Patna, Kanpur, Gwalior, Agra shows decreasing trend. No trend is observed in Kota. Monsoon season depicted decrease in the rainfall magnitude in most of the regions of north India.
ISSN:0974-6846
0974-5645
DOI:10.17485/ijst/2015/v8i3/59580