Trend analysis of rainfall and temperature data for India

Jain, Sharad K.; Kumar, Vijay
January 2012
Current Science (00113891);1/10/2012, Vol. 102 Issue 1, p37
Academic Journal
This article aims to review studies pertaining to trends in rainfall, rainy days and temperature over India. Sen's non-parametric estimator of slope has been frequently used to estimate the magnitude of trend, whose statistical significance was assessed by the Mann-Kendall test. Spatial units for trend analysis vary from station data to sub-division to sub-basin/ river basins. There are differences in the results of the various studies, and a clear and consistent picture of rainfall trend has not emerged. Although the different units (sub-basins or sub-divisions) may have a nonzero slope value, few values are statistically significant. In a study on basin-wise trend analysis, 15 basins had decreasing trend in annual rainfall; only one basin showed significant decreasing trend at 95% confidence level. Among six basins showing increasing trend, one basin showed significant positive trend. Most of the basins had the same direction of trend in rainfall and rainy days at the annual and seasonal scale. Regarding trends in temperature, the mean maximum temperature series showed a rising trend at most of the stations; it showed a falling trend at some stations. The mean minimum temperature showed a rising as well as a falling trend. At most of the stations in the south, central and western parts of India a rising trend was found. Some stations located in the north and northeastern India showed a falling trend in annual mean temperature. Most of the data used in trend analysis pertained to the stations located in urban areas and these areas are sort of heat islands. This article also highlights the need of a network of baseline stations for climatic studies.


Related Articles

  • Comparison of Different Interpolation Methods for Investigating Spatial Variability of Rainfall Erosivity Index. Khorsandi, Nazila; Mahdian, Mohammad Hossein; Pazira, Ebrahim; Nikkami, Davood; Chamheidar, Hadi // Polish Journal of Environmental Studies;2012, Vol. 21 Issue 6, p1659 

    The objective of our study was to expand the R factor of the RUSLE model, erosivity index by its estimation from more readily available rainfall erosivity indexes and parameters in stations without rainfall intensity data, and to determine the most accurate interpolation method for preparing an...

  • Effects of data time-step on the accuracy of calibrated rainfall-streamflow model parameters: practical aspects of uncertainty reduction. Littlewood, lan G.; Croke, Barry F. W. // Hydrology Research;Jun2013, Vol. 44 Issue 3, p430 

    The effects of data time-step on the accuracy of calibrated parameters in a discrete-time conceptual rainfall-streamflow model are reviewed and further investigated. A quick-flow decay time constant of 19.9 hr, calibrated for the 10.6 km² Wye at Cefn Brwyn using daily data, massively...

  • Modified Convective Stratiform Technique (CSTm) Performance on Rainfall Estimation in Indonesia. Endarwin; Hadi, Safwan; Tjasyono, H. K. Bayong; Gunawan, Dodo; Siswanto // Journal of Mathematical & Fundamental Sciences;2014, Vol. 46 Issue 3, p251 

    This study has analyzed a rainfall estimation using a modified convective stratiform technique (CSTm). Unlike the original convective stratiform technique (CST), which only utilizes infrared (IR) data, CSTm applies not only IR data but also passive microwave (PMW) data. Two major modifications...

  • Evaluation and bias correction of satellite rainfall data for drought monitoring in Indonesia. Vernimmen, R. R. E.; Hooijer, A.; Mamenun; Aldrian, E. // Hydrology & Earth System Sciences Discussions;2011, Vol. 8 Issue 3, p5969 

    The accuracy of satellite rainfall data from different sources, TRMM 3B42RT, CMORPH and PERSIANN, was investigated through comparison with reliable ground station rainfall data in Indonesia, with a focus on their ability to detect patterns of low rainfall that may lead to drought conditions. It...

  • Estudo de tendência de chuvas de longo prazo. de Oliveira Sanches, Fabio; Verdum, Roberto; Fisch, Gilberto // Revista Ambiente e Água;2013, Vol. 8 Issue 3, p214 

    In the Pampas Region in the southwest of the State of Rio Grande do Sul, there are areas that show fragility in relation to soil and climatic characteristics. The sandy areas of this region have attracted special attention in the recent decades due to historical, socio economic and environmental...

  • Uzun Yıllık Yağış Verilerinin Trend Analizi ile DeÄŸerlendirilmesi: TekirdaÄŸ-Çorlu Ä°lçesi Uygulaması. İstanbulluoğlu, A.; Bağdatlı, M. C.; Arslan, C. // Journal of Tekirdag Agricultural Faculty;2013, Vol. 10 Issue 2, p70 

    Turkey possess short or long term risk of climate change is one of the countries (Turkes et al. 2002). The differentiation of the vegetation period of oscillations occurring in climate, land degradation and drought can lead to serious problems such as reduction of agricultural production. In...

  • “A sky of brass and burning winds”: documentary evidence of rainfall variability in the Kingdom of Lesotho, Southern Africa, 1824—1900. Nash, David J.; Grab, Stefan W. // Climatic Change;Aug2010, Vol. 101 Issue 3/4, p617 

    Forecasting austral summer rainfall in southern Africa is hampered by a lack of long-term instrumental data. This paper extends the historical record for the subcontinent by presenting the first extensive 19th century climate history for Lesotho derived from documentary evidence. The data...

  • Empirical and Fundamental Rheological Properties of Wheat Flour Dough as Affected by Different Climatic Conditions. Hadnađev, M.; Hadnađev, T. Dapčevié; Šimurina, O.; Filipčev, B. // Journal of Agricultural Science & Technology;2013 Supplement, Vol. 15, p1381 

    The aim of this study was to evaluate the capability of the empirical (large scale) and fundamental (small scale) rheological tests to differentiate between wheat flours of different harvest years. In order to provide flours affected by different climatic conditions, harvest years 2004 and 2005...

  • Impact of Climate Change on Regional Hydroclimate Projection in Peninsular Malaysia. Toriman, Mohd Ekhwan; Mokhtar, Mazlin Bin; El-fithri, Rahmah; Aziz, Nor Azlina Abdul; Abdullah, Md. Pauzi; Gasim, Muhamad Barzani // Journal of Environmental Science & Engineering: B;2012, Vol. 1B Issue 1, p41 

    For the assessment of the impact of future climate change on the hydrologic regime and water resources of Peninsular Malaysia, it is necessary to downscale the climate change simulations of a coarse scale General Circulation Model to the region of Peninsular Malaysia at fine grid resolution....


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics