Regional impacts of global change: seasonal trends in extreme rainfall, run-off and temperature in two contrasting regions of Morocco
In Morocco, socio-economic activities are highly vulnerable to extreme weather events. This study investigates trends in mean and extreme rainfall, run-off and temperature, as well as their relationship with large-scale atmospheric circulation. It focuses on two Moroccan watersheds: the subhumid cli...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2016-05-01
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| Series: | Natural Hazards and Earth System Sciences |
| Online Access: | http://www.nat-hazards-earth-syst-sci.net/16/1079/2016/nhess-16-1079-2016.pdf |
| Summary: | In Morocco, socio-economic activities are highly vulnerable to extreme
weather events. This study investigates trends in mean and extreme rainfall,
run-off and temperature, as well as their relationship with large-scale
atmospheric circulation. It focuses on two Moroccan watersheds: the
subhumid climate region of Bouregreg in the north and the semi-arid region
of Tensift in the south, using data from 1977 to 2003. The study is based on
a set of daily temperature, precipitation and run-off time series
retrieved from weather stations in the two regions. Results do not show a
homogeneous behaviour in the two catchments; the influence of the large-scale
atmospheric circulation is different and a clear spatial dependence of the
trend analysis linked to the distance from the coast and the mountains can
be observed. Overall, temperature trends are mostly positive in the studied
area, while weak statistically significant trends can be identified in
seasonal rainfall, extreme rainfall events, average run-off and extreme
run-off events. |
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| ISSN: | 1561-8633 1684-9981 |