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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/15091
Title: Long term trend analysis of mega cities in northern india using rainfall data
Authors: Meena P.K.
Khare, Deepak
Shukla R.
Mishra P.K.
Published in: Indian Journal of Science and Technology
Abstract: 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°18'00"N to 34°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. This result is extremely significant as monsoon rainfall serves the major water demand for agriculture and water resources. Change Percentage for 111 years had shown rainfall variability throughout North India centre's with the highest increase in Delhi centre's (32.43 %) and decrease in Patna centre's (-16.22 %) annually.
Citation: Indian Journal of Science and Technology (2015), 8(3): 247-253
URI: https://doi.org/10.17485/ijst/2015/v8i3/59580
http://repository.iitr.ac.in/handle/123456789/15091
Issue Date: 2015
Publisher: Indian Society for Education and Environment
Keywords: Mann-kendall
Mega cities
Pre-whitening method
Rate of change
Standard normal homogeneity test (SNHT)
ISSN: 9746846
Author Scopus IDs: 56513694100
14060295600
56185981500
57201865282
Author Affiliations: Meena, P.K., Department of Water Resources Development and Management, Indian Institute of Technology, Roorkee, India
Khare, D., Department of Water Resources Development and Management, Indian Institute of Technology, Roorkee, India
Shukla, R., Department of Water Resources Development and Management, Indian Institute of Technology, Roorkee, India
Mishra, P.K., Department of Water Resources Development and Management, Indian Institute of Technology, Roorkee, India
Corresponding Author: Meena, P.K.; Department of Water Resources Development and Management, Indian Institute of TechnologyIndia; email: pramodcae@gmail.com
Appears in Collections:Journal Publications [WR]

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