Dr. Arjun Lal Meena, International Journal of Research in Engineering, IT and Social Sciences, ISSN 2250-0588, Impact Factor: 6.565, Volume 08 Issue 09, September 2018, Page 48-50 Study of Rainfall Pattern of , ,

Dr. Arjun Lal Meena (Assistant Professor, Department of Geography, Jai Narain Vyas University, Jodhpur, Rajasthan, )

Abstract: As the food is the necessary for the human life, the agriculture is the one of the primary activity which is the main activity to drive the food. The agriculture depends on the Rainfall pattern and intensity. The area with the low rainfall relies on the irrigation for farming. The area lie in arid or having desert area totally rely on the irrigation facilities as they receive little rainfall. Shergarh tehsil lie in the Jodhpur district which experiences the rainfall scarcity. The paper shows the rainfall pattern persist over the study area in last 17 years. Keywords: Anomaly, Deviation, Inconsistence, irregular etc.

I. INTRODUCTION Change is the law of nature. These changes could have either be positive impacts or negative impacts. Similarly the climatic conditions over an area get change with the time but its take a long period. All elements of climate don’t change with the same intensity. Rainfall is the one of the element of climate which is one of the inconsistence and irregular. This changing pattern of rainfall always create problem for farmers, decision makers of policies as both high and low rainfall is injurious for human life and property. India is the country with diversity enjoys different climatic conditions in different areas. Rajasthan is the only state which has worst conditions regarding the rainfall. Jodhpur district lie in the west part of the state having desert condition as it is the part of the Thar Desert. Shergarh Tehsil is located in western part of Jodhpur district. The paper focus on the pattern of rainfall over the tehsil. Study Area Shergarh tehsil is located in west of Jodhpur. It is surrounded by Tehsil in North, Osian in East, Jodhpur and Luni in south and Jaisalmer and Barmer district in east.

. Figure 1: Location of Study Area http://indusedu.org Page 48

This work is licensed under a Creative Commons Attribution 4.0 International License Dr. Arjun Lal Meena, International Journal of Research in Engineering, IT and Social Sciences, ISSN 2250-0588, Impact Factor: 6.565, Volume 08 Issue 09, September 2018, Page 48-50

Objective The study area lies in desert area and receives the rainfall in very low amount. So the study is carried out with the aim of analysis of rainfall pattern that could make the picture clear about the rain scenario in desert area. II. MATERIALS AND METHODS The study is carried out with the secondary data of rainfall of Shergarh received from the official site of Raj. Govt. http://www.water.rajasthan.gov.in/wrd#cd-search. All calculation are made in MS-Excel and represented by graph. The following formulas are employed for the analysis 1. Mean (X¯) = ∑X/N Where, X = Rainfall Variable N= Number of Years 2. Standard Deviation (σ ) =√∑(x-x¯)²/N 3. Deviation = (x-x¯) 4. Standardized anomaly = (x-x¯)/ σ Where, x = annual Rainfall (mm) X= Mean of the entire series σ= Standard Deviation from the mean of Series Table 1: Standardized Rainfall Anomaly for Shergarh Tehsil, Jodhpur Years Annual Rainfall Deviation (X-X¯) Standardized (mm) Anomaly(X-X¯)/STD 2001 346 26.86471 0.145656 2002 72.8 -246.335 -1.33559 2003 353 33.86471 0.183609 2004 103 -216.135 -1.17185 2005 109 -210.135 -1.13932 2006 221 -98.1353 -0.53207 2007 359 39.86471 0.21614 2008 255 -64.1353 -0.34773 2009 67 -252.135 -1.36704 2010 676.5 357.3647 1.937575 2011 566 246.8647 1.338461 2012 279.5 -39.6353 -0.2149 2013 611.5 292.3647 1.585155 2014 260 -59.1353 -0.32062 2015 421 101.8647 0.552294 2016 266 -53.1353 -0.28809 2017 459 139.8647 0.758324 Source:http://www.water.rajasthan.gov.in/content/water/en/waterresourcesdepartment/WaterManagement/IWR M.html Mean of the series = 319.14 Standard Deviation = 184.44

Figure 2: Annual Rainfall for Shergarh Tehsil, Jodhpur

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This work is licensed under a Creative Commons Attribution 4.0 International License Dr. Arjun Lal Meena, International Journal of Research in Engineering, IT and Social Sciences, ISSN 2250-0588, Impact Factor: 6.565, Volume 08 Issue 09, September 2018, Page 48-50

Figure 3: Standardized Rainfall anomaly for Shergarh Tehsil, Jodhpur

III. RESULTS AND DISCUSSIONS As shown in fig. 2. The tehsil received highest annual rainfall in year 2010 which is 676.5mm. The Tehsil received rainfall in very low amount before and after the year 2010. Tehsil received the annual rainfall in lowest amount in 2009 which is 67mm. Fig 3. Demonstrate the deviation from the average. As the graph show before the year 2010 there were found positive anomaly in three years only as the deviation in these years is very low. After 2010, there is found the positive anomaly in five years with the good margins. It is the sign of good monsoon in these years.

IV. REFERENCES [1] Swain Sabyasachi, Verma Manikant and Verma M.K. (2015) ‘Statistical Trend Analysis of Monthly Rainfall For Raipur District, Chhattisgarh’, International Journal of Advanced Engineering Research and Studies. IV/II/, pp. 87 – 89. Available at: https://rspublication.com/ijeted/2016/july16/4.pdf [2] Tadvi R. Vanmala (2016) ‘A Geographical study of Rainfall Variability in Nandurbar District’, International Journal of Science and Research (IJSR), 5(2), pp. 416-418. Available at: https://www.ijsr.net/archive/v5i2/NOV161053.pdf [3] Bhargava Neeraj, Bhargava Ritu, Tanwar Singh Prakash and Sharma Ankita (2015) ‘Rainfall Spatial Analysis Using GIS’, International Journal of Advanced Research in Computer and Communication Engineering, 2(5),pp. 2197 – 2200. Available at: www.isca.in/IJENS/Archive/v4/i4/6.ISCA-IRJEvS-2015-005.pdf [4] Meena Arjun Lal and Bisht Priyanka (2017) ‘Study Of Variability Of Rainfall And Suitability Of Farming In Sub- Humid Region: A Case Study Of Jaipur District, Rajasthan, India’, Sustainability, Agri, Food and Environmental Research, 5(3), pp. 41-45. Available at: http://portalrevistas.uct.cl/index.php/safer/issue/view/125 [5] EKWE, Chibuike Michael, JOSHUA Kunda Jonah, IGWE Eze Johnson and OSINOWO Adyodotun Adekunle(2014) ‘Mathematical Study of Monthly And Annual Rainfall Trends in Nasarawa State, Nigeria’, IOSR Journal of Mathematics,10(1),pp.56-62.Available at: https://pdfs.semanticscholar.org/63e1/07c8eb6a0a8a2484d4fef914ca1113400bae.pdf [6] Upadhyaya Harshita (2014) ‘Variability of Rainfall in Rajasthan (1960-2009)’, International Journal of Innovative Research and Review, 2(1), pp.17–19. Available at: www.cibtech.org/J-Innovative...2.../JIRR-03-005-HARSHITA-VARIABILITY.pdf

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