Abstract

The current study was conducted to examine the impact of climate change on rainfall in Jharkhand state of India. It deals with the analysis of the historical spatiotemporal variability of rainfall on the annual, seasonal and monthly scale in 18 districts of the state Jharkhand over a period of 102 years (1901–2002). Mann-Kendall trend test and Sen’s slope method were applied to detect trends and the magnitude of change over the time period of 102 years (1901–2002). Mann Whitney Pettit’s method and Cumulative deviations test were applied for detection of shift point in the series. The results obtained year 1951 to be the most probable shift point in annual rainfall. The trend analysis along with the percent change for the data series before (1901–1951) and after the shift point (1952–2002) was also done. A significant downward rainfall trend was found in annual, monsoon and winter rainfall over the period of 102 years. The maximum decrease was found for the Godda (19.77%) and minimum at Purbi Singhbum station (1.95%). Trend analysis before shift point, i.e., during 1901–1951 showed an upward trend in annual rainfall and after shift point (1952–2002) a downward trend. The trend analysis for entire Jharkhand demonstrated a significant downward trend in annual and monsoon rainfall with a decrease of 14.11% and 15.65% respectively. A downward trend in seasonal rainfall will have a more pronounced effect on agricultural activities in the area as it may affect the growth phase of the kharif crops (May–October) in the region.

Highlights

  • The study of regional/local climate change has been a subject of extensive research for few decades.One of the major reasons for the increased emphasis on these studies could be due to the changing pattern of rainfall as observed in several parts of the world [1,2,3]

  • The cumulative deviations test was applied at significance level and the results showed that, the series cumulative deviations test was applied at 1% significance level and the results showed that, the series to be be reliable reliable and and homogeneous

  • Annual precipitation varied between 1211 mm in the northwestern part (Chatra station) and 1383 mm in eastern part (Pakaur station) of Jharkhand

Read more

Summary

Introduction

The study of regional/local climate change has been a subject of extensive research for few decades. One of the major reasons for the increased emphasis on these studies could be due to the changing pattern of rainfall as observed in several parts of the world [1,2,3]. Dore [4] observed that rainfall rich areas have become more rich while, dry and arid areas have experienced increased dryness for the past few years. The average precipitation is expected to increase, but on regional scale it is predicted to show the pattern of increase and vice versa [5]. 19th century, the global terrestrial precipitation has augmented by about 2% [6,7].

Objectives
Methods
Results
Conclusion
Full Text
Published version (Free)

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call