Characterization of hydro-meteorological drought in Nepal Himalaya: a case of Karnali River Basin
Himalayan river basin is marked by a complex topography with limited observational data. In the context of increasing extreme events, this study aims to characterize drought events in the Karnali River Basin (KRB). Firstly, historical data for 34-years (1981–2014) from ten different stations were an...
| Autores principales: | , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2019
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/106766 |
| _version_ | 1855538221240287232 |
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| author | Khatiwada, K.R. Pandey, Vishnu Prasad |
| author_browse | Khatiwada, K.R. Pandey, Vishnu Prasad |
| author_facet | Khatiwada, K.R. Pandey, Vishnu Prasad |
| author_sort | Khatiwada, K.R. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Himalayan river basin is marked by a complex topography with limited observational data. In the context of increasing extreme events, this study aims to characterize drought events in the Karnali River Basin (KRB). Firstly, historical data for 34-years (1981–2014) from ten different stations were analyzed to compute following drought indices: Standardized Precipitation Index (SPI), Standardized Precipitation Evapotranspiration Index (SPEI), Reconnaissance Drought Index (RDI), Self-Calibrated Palmer Drought Severity Index (sc-PDSI), Standardized Streamflow Index (SFI), and Palmer Hydrological Drought Severity Index (PHDI). Among them, SPI is able to capture the drought duration and intensity fairly well with the others. Secondly, SPI was used to analyse the drought of the entire basin. The SPI analysis showed occurrence of major drought events in the recent years: 1984–85, 1987–88, 1992–93, 1994–95, 2004–09, and 2012. The winter drought of 1999, 2006, 2008–09 were widespread and the monsoon drought is increasing its frequency. No particular pattern of drought was observed from the historical data; however, yield sensitivity index revealed that precipitation pattern and anomaly is influencing crop yield in the area. Being the first study revealing prevalence of the drought in KRB, it can provide a basis for prioritizing interventions focused on drought management in the region. |
| format | Journal Article |
| id | CGSpace106766 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace1067662025-03-11T09:50:20Z Characterization of hydro-meteorological drought in Nepal Himalaya: a case of Karnali River Basin Khatiwada, K.R. Pandey, Vishnu Prasad drought hydrometeorology climate change river basins precipitation crop production crop yield extreme weather events monsoon climate temperature meteorological stations Himalayan river basin is marked by a complex topography with limited observational data. In the context of increasing extreme events, this study aims to characterize drought events in the Karnali River Basin (KRB). Firstly, historical data for 34-years (1981–2014) from ten different stations were analyzed to compute following drought indices: Standardized Precipitation Index (SPI), Standardized Precipitation Evapotranspiration Index (SPEI), Reconnaissance Drought Index (RDI), Self-Calibrated Palmer Drought Severity Index (sc-PDSI), Standardized Streamflow Index (SFI), and Palmer Hydrological Drought Severity Index (PHDI). Among them, SPI is able to capture the drought duration and intensity fairly well with the others. Secondly, SPI was used to analyse the drought of the entire basin. The SPI analysis showed occurrence of major drought events in the recent years: 1984–85, 1987–88, 1992–93, 1994–95, 2004–09, and 2012. The winter drought of 1999, 2006, 2008–09 were widespread and the monsoon drought is increasing its frequency. No particular pattern of drought was observed from the historical data; however, yield sensitivity index revealed that precipitation pattern and anomaly is influencing crop yield in the area. Being the first study revealing prevalence of the drought in KRB, it can provide a basis for prioritizing interventions focused on drought management in the region. 2019-12 2020-01-28T06:40:55Z 2020-01-28T06:40:55Z Journal Article https://hdl.handle.net/10568/106766 en Open Access Elsevier Khatiwada, K. R.; Pandey, Vishnu Prasad. 2019. Characterization of hydro-meteorological drought in Nepal Himalaya: a case of Karnali River Basin. Weather and Climate Extremes, 26:100239. doi: 10.1016/j.wace.2019.100239 |
| spellingShingle | drought hydrometeorology climate change river basins precipitation crop production crop yield extreme weather events monsoon climate temperature meteorological stations Khatiwada, K.R. Pandey, Vishnu Prasad Characterization of hydro-meteorological drought in Nepal Himalaya: a case of Karnali River Basin |
| title | Characterization of hydro-meteorological drought in Nepal Himalaya: a case of Karnali River Basin |
| title_full | Characterization of hydro-meteorological drought in Nepal Himalaya: a case of Karnali River Basin |
| title_fullStr | Characterization of hydro-meteorological drought in Nepal Himalaya: a case of Karnali River Basin |
| title_full_unstemmed | Characterization of hydro-meteorological drought in Nepal Himalaya: a case of Karnali River Basin |
| title_short | Characterization of hydro-meteorological drought in Nepal Himalaya: a case of Karnali River Basin |
| title_sort | characterization of hydro meteorological drought in nepal himalaya a case of karnali river basin |
| topic | drought hydrometeorology climate change river basins precipitation crop production crop yield extreme weather events monsoon climate temperature meteorological stations |
| url | https://hdl.handle.net/10568/106766 |
| work_keys_str_mv | AT khatiwadakr characterizationofhydrometeorologicaldroughtinnepalhimalayaacaseofkarnaliriverbasin AT pandeyvishnuprasad characterizationofhydrometeorologicaldroughtinnepalhimalayaacaseofkarnaliriverbasin |