Quantifying agricultural drought in the Koshi River basin through soil moisture simulation
Study region: The Koshi River Basin (KoRiB), one of the headwaters of the Ganges in Eastern Nepal. Study focus: The mesoscale hydrological model (mHM) is applied to assess the historical spatio-temporal hazard of agricultural drought using soil moisture index (SMI) in the KoRiB. New hydrological ins...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-02-01
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| Series: | Journal of Hydrology: Regional Studies |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581824004816 |
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| author | Prabhat Banjara Pallav Kumar Shrestha Vishnu Prasad Pandey Manisha Sah Prajjwal Panday |
| author_facet | Prabhat Banjara Pallav Kumar Shrestha Vishnu Prasad Pandey Manisha Sah Prajjwal Panday |
| author_sort | Prabhat Banjara |
| collection | DOAJ |
| description | Study region: The Koshi River Basin (KoRiB), one of the headwaters of the Ganges in Eastern Nepal. Study focus: The mesoscale hydrological model (mHM) is applied to assess the historical spatio-temporal hazard of agricultural drought using soil moisture index (SMI) in the KoRiB. New hydrological insights for the region: The research indicates that KoRiB was most severely impacted by drought from 1976 to 2000, with the two major droughts occurring in 1982–1989 and 1991–1996. Both events had an average duration of over 12 months and affected more than a quarter of KoRiB’s area. Notably, between 1951 and 1975 and 2001–2020, the regions of elevated drought hazard shifted from the middle-eastern to the western area of the KoRiB. Previously, droughts were largely the result of precipitation shortfalls, but in the 21st century, rising temperatures have emerged as a significant factor, accompanying the ongoing precipitation deficits. This underscores the imminent occurrence of such compounded effects and emphasizes the importance of monitoring systems to anticipate and mitigate such events. |
| format | Article |
| id | doaj-art-c3a7e7665b7244c997f24c833be0a5fc |
| institution | Kabale University |
| issn | 2214-5818 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj-art-c3a7e7665b7244c997f24c833be0a5fc2025-01-22T05:42:09ZengElsevierJournal of Hydrology: Regional Studies2214-58182025-02-0157102132Quantifying agricultural drought in the Koshi River basin through soil moisture simulationPrabhat Banjara0Pallav Kumar Shrestha1Vishnu Prasad Pandey2Manisha Sah3Prajjwal Panday4Department of Civil Engineering, Pulchowk Campus, Institute of Engineering, Tribhuvan University, NepalHelmholtz Centre for Environmental Research – UFZ, Leipzig, Germany; University of Potsdam, Institute of Earth and Environmental Science, Potsdam-Golm, Germany; Corresponding author at: Helmholtz Centre for Environmental Research – UFZ, Leipzig, Germany.Department of Civil Engineering, Pulchowk Campus, Institute of Engineering, Tribhuvan University, Nepal; Center for Water Resources Studies, Institute of Engineering, Tribhuvan University, Nepal; Corresponding author at: Department of Civil Engineering, Pulchowk Campus, Institute of Engineering, Tribhuvan University, Nepal.Nepal Engineering College, Changunarayan, Bhaktapur, NepalNichols College, Department of Environmental Science, Dudley, Massachusetts, USAStudy region: The Koshi River Basin (KoRiB), one of the headwaters of the Ganges in Eastern Nepal. Study focus: The mesoscale hydrological model (mHM) is applied to assess the historical spatio-temporal hazard of agricultural drought using soil moisture index (SMI) in the KoRiB. New hydrological insights for the region: The research indicates that KoRiB was most severely impacted by drought from 1976 to 2000, with the two major droughts occurring in 1982–1989 and 1991–1996. Both events had an average duration of over 12 months and affected more than a quarter of KoRiB’s area. Notably, between 1951 and 1975 and 2001–2020, the regions of elevated drought hazard shifted from the middle-eastern to the western area of the KoRiB. Previously, droughts were largely the result of precipitation shortfalls, but in the 21st century, rising temperatures have emerged as a significant factor, accompanying the ongoing precipitation deficits. This underscores the imminent occurrence of such compounded effects and emphasizes the importance of monitoring systems to anticipate and mitigate such events.http://www.sciencedirect.com/science/article/pii/S2214581824004816DroughtHazard assessmentKoshi River BasinMHMSMI |
| spellingShingle | Prabhat Banjara Pallav Kumar Shrestha Vishnu Prasad Pandey Manisha Sah Prajjwal Panday Quantifying agricultural drought in the Koshi River basin through soil moisture simulation Journal of Hydrology: Regional Studies Drought Hazard assessment Koshi River Basin MHM SMI |
| title | Quantifying agricultural drought in the Koshi River basin through soil moisture simulation |
| title_full | Quantifying agricultural drought in the Koshi River basin through soil moisture simulation |
| title_fullStr | Quantifying agricultural drought in the Koshi River basin through soil moisture simulation |
| title_full_unstemmed | Quantifying agricultural drought in the Koshi River basin through soil moisture simulation |
| title_short | Quantifying agricultural drought in the Koshi River basin through soil moisture simulation |
| title_sort | quantifying agricultural drought in the koshi river basin through soil moisture simulation |
| topic | Drought Hazard assessment Koshi River Basin MHM SMI |
| url | http://www.sciencedirect.com/science/article/pii/S2214581824004816 |
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