World Environmental and Water Resources Congress 2019
Analysis of Dependability of Annual and Monsoonal Rainfall in Eastern Ganga Canal Command, India
Publication: World Environmental and Water Resources Congress 2019: Groundwater, Sustainability, Hydro-Climate/Climate Change, and Environmental Engineering
ABSTRACT
Effect of the climate change on rainfall characteristics varies spatially and must be quantified locally for optimal natural resources management. An attempt has been made to analyse the dependability in annual and monsoonal rainfall data over Eastern Ganga Canal (EGC) command area, India, for entire century, i.e. 1901–2012. The daily gridded (0.25°×0.25°) rainfall data prepared by the India Meteorological Department (IMD), Pune, are used. Long term data series are scaled to annual and monthly level. Total 12 grids of IMD rainfall data covering entire command area were selected in this study. Analysis for dry and wet year on annual scale along with five year moving average was carried out for all the grids as well as for entire command area. The analysis revealed that the chances of occurrence of wet year are more over chances of occurrence of dry year in the entire command area by the ratio of 14:13. However, data of last one and half decade has contradictory trend with higher changes of occurrence of dry year to very minimal chances of occurrence wet year over the command area. Dependable rainfall at various probability level has been estimated by employing gamma distribution analysis over the annual and monsoonal rainfall data. It was observed that mean annual and monsoonal weighted rainfall over entire command (1,165.93 mm and 901.95 mm, respectively) is much different than the 75% dependable rainfall values (985.48 mm and 727.54 mm, respectively), which generally must be used in any planning activity.
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REFERENCES
Dash, SK, Kulkarni, MA, Mohanty, UC, Prasad, K. 2009: Changes in the characteristics of rain events in India, J. Geophy. Res., 114, D10109., 2009.
Hoekstra, AY, Chapagain, AK, Aldaya, MM, Mekonnen, MM. 2011. The water footprint assessment manual. Earthscan Ltd, London.
Husak, GJ, Michaelsen, J, Funk, C. 2007. Use of the gamma distribution to represent monthly rainfall in Africa for drought monitoring applications. Int. J. Climatol. 27(7), 935-944.
IMD. 2006, 2007. Southwest monsoon – end of season report for 2006 and 2007. Published by India Meteorological Department, New Delhi (www.imd.ernet.in)
IPCC. 1996. In: Houghton, JT, Meira, Filho LG, Callander, BA, Harris, N, Kattenberg, A, Maskell, K (Eds.), Climate Change 1995: The Science of Climate Change. Cambridge University Press, Cambridge.
IPCC. 2007. Climate change 2007: the physical science basis. In Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Solomon, S, Qin, D, Manning, M, Chen, Z, Marquis, M, Averyt, KB, Tignor, M, Miller, HL (eds).
Juras, J. 1994. Some common features of probability distributions for precipitation. Theoretical and Applied Climatology 49: 69–76.
Krishnamurthy, CKB, Lall, U, Kwon, H-H. 2009. Changing frequency and intensity of rainfall extremes over India from 1951 to 2003. J Clim 22:4737–4746.
Kumar, V, Jain, SK, Singh, Y. 2010. Analysis of long-term rainfall trends in India. Hydrol Sci J–Journal des Sciences Hydrologiques 55(4):484–496
Kundu, S, Khare, D, Mondal, A, Mishra, PK. 2015. Analysis of spatial and temporal variation in rainfall trend of Madhya Pradesh, India (1901–2011). Environmental Earth Sciences 73(12): 8197–8216.
Rajeevan, M, Bhate, J. 2008. A high resolution daily gridded rainfall data set (1971–2005) for mesoscale meteorological studies. NCC Research Report No. 9. National Climate Centre. Indian Meteorological Department.
Rajeevan, M, Bhate, J, Kale, JD, Lal, B. 2006. High resolution daily gridded rainfall data for the Indian region: analysis of break and active monsoon spells. Curr Sci 91:296–306
Rajeevan, M, Bhate, J, Jaswal, AK, 2008. Analysis of variability and trends of extreme rainfall events over India using 104 years of gridded daily rainfall data. Geophys Res Lett 35:1–6.
Thom, HC. 1958. A note on the gamma distribution. Monthly Weather Review 86: 117–122.
Ventura, F, Rossi Pisa, P, Ardizzoni, E. 2002. Temperature and precipitation trends in Bologna (Italy) from 1952 to 1999. Atmos. Res. 61, 203–214.
Wilks, D. 1990. Maximum likelihood estimation for the gamma distribution using data containing zeros. Journal of Climate 3: 1495–1501.
Wilks, DS. 1995. Statistical Methods in the Atmospheric Sciences: an Introduction. Academic Press: San Diego, CA.
World Bank, Washington, DC., 1991. World Development Report 1991: The Challenge of Development. ERIC Clearinghouse.
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Published In
World Environmental and Water Resources Congress 2019: Groundwater, Sustainability, Hydro-Climate/Climate Change, and Environmental Engineering
Pages: 344 - 355
Editors: Gregory F. Scott and William Hamilton, Ph.D.
ISBN (Online): 978-0-7844-8234-6
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© 2019 American Society of Civil Engineers.
History
Published online: May 16, 2019
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