RADHA KRISHAN
@nihroorkee.gov.in
Research Associate, Groundwater Division
National Institute of Hydrology, Roorkee
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Radha Krishan, Deepak Khare, Bhaskar R. Nikam, and Ayush Chandrakar
American Society of Civil Engineers
Radha Krishan, Bhaskar R. Nikam, Santosh M. Pingale, Ayush Chandrakar, and Deepak Khare
Wiley
Ayush Chandrakar, Deepak Khare, and Radha Krishan
Springer Science and Business Media LLC
The study and investigation of precipitation trends is quite important for a country like India, whose economy is largely based on agriculture, which in turn is significantly affected by water availability. Almost 83% of water is used in agriculture, 12% is consumed by industries and a mere 5% is used for domestic purposes. In the present study, the long term trend based on rainfall data of 115 years (1901–2015) was analyzed at annual and seasonal (pre-monsoon/summer, monsoon, post-monsoon/winter) scale. After checking for cross-correlation in the data, Mann-Kendall test (MK) was applied, and in order to identify the trends, Sen’s slope estimator was used and the overall percent change for the rainfall over the study area was calculated. To interpolate the spatial pattern, an inverse distance weighted interpolation method (IDW) was used using ArcGIS 10.2.2. The analysis showed a significant decrease in the trend of rainfall for annual and seasonal series during the entire time period.
Radha Krishan, Ayush Chandrakar, Bhaskar R. Nikam, and Deepak Khare
American Society of Civil Engineers
Rabindranath Sethi, Brij Kishor Pandey, Radha Krishan, Deepak Khare, and P. C. Nayak
Springer Science and Business Media LLC
AbstractWater is the key of development and stability of any
region. Under climate change condition, water systems are less reliable and more vulnerable. In this study, performance of Saline reservoir in Odisha, India has been evaluated under the climate change condition. The study mainly focused on the trend analysis for identified the temporal changes in precipitation and inflow time series using Mann–Kendall test, quantification of inflows to reservoir using ARNO model and performance evaluation of reservoir using WEAP model under climate change condition. In the results, it has been observed that there is no significant trend for annual, seasonal and for any monthly rainfall. Variation in precipitation shows that rainy days are decreasing whereas number of intense rainy days (>100 mm) are increasing. A significant rising trend with test statistic value of +3.18 is observed for daily inflow series at 95 % confidence level. Evaluation of inflow to reservoir, ARNO model shows that the change in simulated flow is directly proportional to the change in rainfall. In order to 25 % Change, decrease or increase in rainfall amount resulted in equal amount of decrease or increase in the inflow. Performance evaluation of reservoir using WEAP model shows that if inflows reduced by 20 % there would be a decrease in supply reliability and it would not be possible to increase supplies. Reducing live storage by 10 % influence supply delivered in May and June, but again has little impact on the rest of the year.