Long-Term Seasonal and Annual Rainfall Trend Analysis of Giridih District, Jharkhand, India
District Giridih is primarily rain dependent on its 95 per cent net cultivable land under summer-monsoon crops. It is classified as a mono-cropping area as it lacks irrigation facilities, essential for winter crops. In the last few years, the district experienced water stress due to the shortage of monsoon rainfall. We study long term seasonal and annual rainfall trend analyses for the Giridih district of Jharkhand in India using linear regression modelling. The last 100 years of data were taken for the study and were divided into two-time phases of 50 years each to analyse the changing pattern of rainfall trends. We found a decreasing trend in monsoon rainfall from 1 mm y-1 to 3 mm y-1 between the initial (1921-1971) and final (1972-2021) phase of the study period. Similarly, the return period of droughts (rainfall deficit years) has also reduced from 11 years to 5 years. The study has shown that the rainfall pattern has changed, with the winter months showing a decrease and the pre-monsoon months an increase in their relative contributions to the annual rainfalls. The study may help in the formulation of water resource conservation-oriented decision-making to cope-up with the rainfall uncertainties and meet the future water demand.
Alkire, S., Oldiges, C. and U. Kanagaratnam (2018). Multidimensional poverty reduction in India 2005/6– 2015/16: Still a long way to go but the poorest are catching up. OPHI Research in Progress 54a, University of Oxford: London, UK.
Barnett T.P., Adam, J.C. and D.P. Lettenmaier (2005). Potential impacts of a warming climate on water availability in snow-dominated regions, REVIEWS, Nature, 438. doi:10.1038/nature0414
Bates, B.C., Kundzewicz, Z.W., Wu, S. and J. Palutikof (2008). Climate Change and Water Intergovernmental Panel on Climate Change (IPCC) Secretariat, Geneva.
Cini-India (2018). Child Labour in Mica Mines of Koderma & Giridih District of Jharkhand: A situation analysis report. Child in Need Institute, Ranchi.
Gosain, A.K., Rao, S. and D. Basuray (2006). Climate change impact assessment on hydrology of Indian River basins. Curr Sci, 90: 346-353.
Guhathakurta, P. and M. Rajeevan (2008). Trends in the rainfall pattern over India. Int J Climatol, 28: 1453-1469.
Houghton, J.T., Ding, Y.D.J.G., Griggs, D.J., Noguer, M., van der Linden, P.J., Dai, X., et al. (Eds.). (2001). Climate change 2001: the scientific basis: contribution of Working Group I to the third assessment report of the Intergovernmental Panel on Climate Change. Cambridge University Press, pp. 881.
Intergovernmental Panel on Climate Change (IPCC) (2013). Climate Change 2013 – The physical science basis, working group I contribution to the IPCC fifth assessment report (WGI AR5) of the intergovernmental panel on climate change. Cambridge University Press. pp. 422-808.
Jain, S.K. and V. Kumar (2012). Trend analysis of rainfall and temperature data for India. Curr Sci, 102: 37-49.
Jayaseelan, A.T. and V.H. Vinod (2009). Prioritization Of Watersheds In Jharkhand State - Based On Iwmp Criteria And Satellite Derived Parameters. Technical Report No.: JSAC/TECH-REP/RD-GOJ/WSMIS-JRD/09-10/07a, JSAC: Ranchi, Jharkhand, Sac/Tech-Rep/Rd-Goj/WsmisJrd/09-10/07.
Kaur, N. and P. Kaur (2019). Maize yield projections under different climate change scenarios in different districts of Punjab, Journal of Agrometeorology, 21(2): 154-158.
Kishore, P., Jyothi, S., Basha, G., Rao, S.V.B., Rajeevan, M., Velicogna, I. and T.C. Sutterley (2016). Precipitation climatology over India: Validation with observations and reanalysis datasets and spatial trends. Clim Dyn, 46: 541-556.
Kumar, M., Denis, D.M. and S. Suryavanshi (2016). Longterm climatic trend analysis of Giridih district, Jharkhand (India) using statistical approach. Model. Earth Syst. Environ., 2: 116. https://doi.org/10.1007/s40808-016- 0162-2
Lal, M. (2001). Climatic change: Implications for India’s water resources. J Indian Water Resour Soc, 21: 101-119.
Naidu, C.V., Rao, B.R.S. and D.V.B. Rao (1999). Climatic trends and periodicities of annual rainfall over India. Meteorol. Appl., 6: 395-404.
Petare, K.J., Nayak, J., Jaini, V. and S.P. Wani (2016). Livelihood system assessment and planning for poverty alleviation: A case of rainfed agriculture in Jharkhand. Current Science, 10: 1773-1783.
Rajeevan, M., Bhate, J., Kale, J.D. and B. Lal (2006). High resolution daily gridded rainfall data for the Indian region: analysis of break and active monsoon spells. Curr Sci, 91: 296-306.
Ramos, M.C., Balasch, J.C. and J.A. Martínez-Casasnovas (2012). Seasonal temperature and precipitation variability during the last 60 years in a Mediterranean climate area of Northeastern Spain: A multivariate analysis. Theor. Appl. Climatol., 110: 35-53.
Sharma, S. and P.K. Singh (2017). Long term spatiotemporal variability in rainfall trends over the state of Jharkhand, India. Climate, 5(1): 18. https://doi.org/10.3390/cli5010018
Sonali, P. and N. Kumar (2013). Review of trend detection methods and their application to detect extreme temperature changes in India. J Hydrol, 476: 212-227
Suryavanshi, S., Panday, A., Chaube, U.C. and N. Joshi (2014) Long term historic changes in climatic variables of Betla Basin, India. Theor Appl Climatol., 117: 403-418.