scholarly journals Trend Analysis of Hydro-meteorological Parameters in the Jhelum River Basin, North Western Himalayas

2021 ◽  
Author(s):  
Sheikh umar ◽  
M A Lone ◽  
N K Goel ◽  
Mohammad Zakwan
Keyword(s):  
Trend Analysis ◽  
River Basin ◽  
Meteorological Data ◽  
Series Data ◽  
Western Himalayas ◽  
Annual Maximum ◽  
Annual Average ◽  
Average Rainfall ◽  
Jhelum River ◽  
Jhelum River Basin

Abstract The Jhelum River basin drains the entire Kashmir valley and is susceptible to floods, surrounded Himalayan Mountain range. The trend analysis of Hydro-meteorological data is crucial for planning and management of various activities (agriculture, design of hydraulic structures) in the basin. The purpose of the present study is to analyze the trends in the annual maximum and annual average discharge, annual maximum, and annual average rainfall for the Jhelum River basin. The trend analysis was performed by using Mann-Kendall (M-K), Sen’s slope, and innovative trend analysis (ITA) at various Hydro-meteorological stations. The outcomes of trend analysis using the ITA test showed non-monotonic trends at various stations for different time series data and bring forth more significant data to analyze changes in Hydro-meteorological data. Moreover, the overall trend shows a significant decreasing trend in annual average rainfall and discharge, while annual maximum rainfall and discharge revealed a significant increasing trend via ITA. The trend analysis depicts changes in Hydro-meteorological data which would be useful for future management of water resources. Moreover, changes in the discharges in the Jhelum River are due to climatic change and anthropogenic activities in the basin.

Estimation of snow/glacier melt contribution in the upper part of the Beas River basin, Himachal Pradesh, using conventional and SNOWMOD modeling approach

2015 ◽  
Vol 6 (4) ◽  
pp. 880-890 ◽  
Author(s):  
Rajeev Saran Ahluwalia ◽  
S. P. Rai ◽  
S. K. Jain ◽  
D. P. Dobhal ◽  
Amit Kumar
Keyword(s):  
River Basin ◽  
Meteorological Data ◽  
Himachal Pradesh ◽  
Conventional Approach ◽  
Annual Average ◽  
Modeling Approach ◽  
Glacier Melt ◽  
Water Region

In the present study, an attempt has been made to estimate the snow/glacier melt contribution in the head water region of the Beas Basin using a conventional hydrograph approach and a modeling (SNOWMOD) technique. The discharge and other meteorological data from 1996 to 2008 of the Manali site were used for the study. The results of SNOWMOD modeling reveal that snow/glacier melt contribution to the Beas River in the head water region varied between 52 (minimum) and 56% (maximum) with an annual average of 54% during the study period. The results obtained using the conventional approach showed the contribution of snow/glacier melt varied between 48 (minimum) and 52% (maximum) with an annual average of 50%. Results obtained using both techniques corroborate each other. This study reveals that the Beas River is mainly sustained by the snow/glacier melt contribution in the head water region.

Trend Analysis of Climate Change in Chittagong Station in Bangladesh

2015 ◽  
Vol 47 ◽  
pp. 42-53
Author(s):  
Mallika Roy ◽  
Bablo Biswas ◽  
Sanjib Ghosh
Keyword(s):  
Climate Change ◽  
Linear Relationship ◽  
Trend Analysis ◽  
Correlation Coefficient ◽  
Human Activities ◽  
Correlation Coefficients ◽  
P Value ◽  
Annual Average ◽  
Agriculture Industry ◽  
Average Rainfall

The amount of rainfall received over an area is an important factor in assessing availability of water to meet various demands for agriculture, industry, irrigation, generation of hydroelectricity and other human activities. Over the study period of recent 30 years, trend values of monsoon average rainfall in Chittagong have increased. This paper has measured the correlation coefficients between rainfall and time for Chittagong, where correlation coefficient for Chittagong is positive. In order to check the strength of linear relationship between rainfall and time, P-value has been measured. Due to various factors of Chittagong region of Bangladesh, there is a growing need to study the rainfall, temperature and humidity pattern. This study was checked annual average rainfall of 30 years, temperature of 60 years and humidity of 28 years for this region. It is hoped that this research may be of help to the concerned organizations and experts working on increasing climate variation in Chittagong.

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