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Drought risk assessment in central Nepal: temporal and spatial analysis

Author

Listed:
  • Piyush Dahal

    (The Small Earth Nepal)

  • Nicky Shree Shrestha

    (The Small Earth Nepal
    Kathmandu University)

  • Madan Lall Shrestha

    (The Small Earth Nepal
    Nepal Academy of Science and Technology)

  • Nir Y. Krakauer

    (The City College of New York)

  • Jeeban Panthi

    (The Small Earth Nepal)

  • Soni M. Pradhanang

    (University of Rhode Island)

  • Ajay Jha

    (Institute for Global Agriculture & Technology Transfer)

  • Tarendra Lakhankar

    (The City College of New York)

Abstract

This paper presents temporal and spatial pattern of drought phenomena in central Nepal using standardized precipitation index (SPI) at multiple time scales. The study is based on 32 years of monthly precipitation data from 40 meteorological stations from 1981 to 2012. Results indicate that, while there is no distinct trend in regional precipitation, interannual variation is large. Trend analysis of drought index shows that most stations are characterized by increases in both severity and frequency of drought and trend is stronger for longer drought time scales. Over the study period, the summer season of 2004, 2005, 2006, 2009 and winters 2006, 2008 and 2009 were the worst widespread droughts. These dry periods have a serious impact on agriculture–livestock production of central Nepal. Better understanding of these SPI dynamics could help in understanding the characteristics of droughts and also to develop effective mitigation strategies.

Suggested Citation

  • Piyush Dahal & Nicky Shree Shrestha & Madan Lall Shrestha & Nir Y. Krakauer & Jeeban Panthi & Soni M. Pradhanang & Ajay Jha & Tarendra Lakhankar, 2016. "Drought risk assessment in central Nepal: temporal and spatial analysis," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 80(3), pages 1913-1932, February.
    • Handle: RePEc:spr:nathaz:v:80:y:2016:i:3:d:10.1007_s11069-015-2055-5
    DOI: 10.1007/s11069-015-2055-5
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