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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/9246
Title: Spatial distribution of rainfall in Indian Himalayas - A case study of Uttarakhand Region
Authors: Basistha A.
Arya, Dhyan Singh
Goel, Narendra Kumar
Published in: Water Resources Management
Abstract: Continuous rainfall data in grid format are required to run models for hydrological and agricultural research as well as water resources planning and management. The present work attempts to prepare a normal annual rainfall map in Himalayan region of India lying in Uttarakhand state at 1 km spatial resolution which currently is not available. In the region, India Meteorological Department maintains observatories/ raingauge stations and data from 44 stations were used in this study. A comparative analysis of interpolation techniques like Inverse Distance Weighted, Polynomial, Splines, Ordinary Kriging and Universal Kriging shows that Universal Kriging with hole-effect model and natural logarithmic transformation with constant trend having Root Mean Square Error (RMSE) of 328.7 is the best choice. This is followed by Ordinary Kriging (RMSE 329.1), Splines (RMSE 392.4), Inverse Distance Weighted (RMSE 409.8) and Polynomial Interpolation (RMSE 418.5). Cross validation of the results shows the largest over prediction at Tehri rainfall station (62.5%) and largest under prediction at Nainital station (-36.5%). Physiographic zone wise, the least errors occur in the plains and the largest in the Great Himalayas. The spatial average rainfalls are 1,472 mm for Terai/Bhabar, 1,782 mm for the Shivalik ranges, 1,591 mm for the Lesser Himalayas and 1,635 mm for the Great Himalayan region. The mean areal rainfall in the region is 1,608 mm. © Springer Science+Business Media B.V. 2007.
Citation: Water Resources Management (2008), 22(10): 1325-1346
URI: https://doi.org/10.1007/s11269-007-9228-2
http://repository.iitr.ac.in/handle/123456789/9246
Issue Date: 2008
Keywords: Himalaya
Interpolation
Kriging
Rainfall distribution
Uttarakhand
ISSN: 9204741
Author Scopus IDs: 23059279100
7004803272
36190650800
Author Affiliations: Basistha, A., Department of Hydrology, Indian Institute of Technology Roorkee, Roorkee 247667 Uttarakhand, India
Arya, D.S., Department of Hydrology, Indian Institute of Technology Roorkee, Roorkee 247667 Uttarakhand, India
Goel, N.K., Department of Hydrology, Indian Institute of Technology Roorkee, Roorkee 247667 Uttarakhand, India
Funding Details: Acknowledgements Authors thankfully acknowledge the Department of Science and Technology, Government of India, for providing financial support under U-PROBE project. The authors are also thankful to two anonymous reviewers for their constructive suggestions.
Corresponding Author: Arya, D.S.; Department of Hydrology, Indian Institute of Technology Roorkee, Roorkee 247667 Uttarakhand, India; email: dsarya@rediffmail.com
Appears in Collections:Journal Publications [HY]

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