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Article

Past and Future Precipitation Trend Analysis for the City of Niamey (Niger): An Overview

1
DIST, Politecnico di Torino & Università di Torino, 10129 Torino, Italy
2
Responsible Risk Resilience Centre—R3C, Politecnico di Torino, 10129 Torino, Italy
3
DIATI, Politecnico di Torino, 10129 Torino, Italy
*
Author to whom correspondence should be addressed.
Climate 2018, 6(3), 73; https://doi.org/10.3390/cli6030073
Received: 27 August 2018 / Revised: 31 August 2018 / Accepted: 2 September 2018 / Published: 5 September 2018
(This article belongs to the Special Issue Climate Services for Local Disaster Risk Reduction in Africa)
Despite the interest in detecting the extremes of climate in the West African Sahel, few studies have been specifically conducted on the Republic of Niger. This research focuses on past, present, and future precipitation trends for the city of Niamey through the combined assessment of WMO precipitation indices using RClimDex and the Standardized Precipitation Index. Past daily precipitation data were derived from a 60-year reconstructed meteorological dataset for the Niamey airport station for the period of 1950–2009 and validated through comparison with an observed time series at Niamey airport (1980–2012). Precipitation analysis confirms the literature’s findings, in particular, a decreasing trend in total precipitation over the period of 1950–2009, and a positive trend for data that spans over the period of 1980–2009, suggesting a precipitation recovery after the dry epoch (1968–1985), even if the deficit with the wettest years in the period of 1950–1968 has not been made up. Furthermore, WATCH-Forcing-Data-ERA-Interim projections, elaborated under RCP 4.5 and RCP 8.5 socio-economic conditions, show that precipitation will increase in the future. Therefore, the Nigerien population will benefit from increased rainfall, but will also have to cope with the exacerbation of both flood and drought risks due to a great interannual variability that can positively or negatively influence water availability. View Full-Text
Keywords: precipitation; climate change; Niger; climate indices; SPI precipitation; climate change; Niger; climate indices; SPI
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MDPI and ACS Style

Bigi, V.; Pezzoli, A.; Rosso, M. Past and Future Precipitation Trend Analysis for the City of Niamey (Niger): An Overview. Climate 2018, 6, 73. https://doi.org/10.3390/cli6030073

AMA Style

Bigi V, Pezzoli A, Rosso M. Past and Future Precipitation Trend Analysis for the City of Niamey (Niger): An Overview. Climate. 2018; 6(3):73. https://doi.org/10.3390/cli6030073

Chicago/Turabian Style

Bigi, Velia, Alessandro Pezzoli, and Maurizio Rosso. 2018. "Past and Future Precipitation Trend Analysis for the City of Niamey (Niger): An Overview" Climate 6, no. 3: 73. https://doi.org/10.3390/cli6030073

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