Algerian rainfall innovative trend analysis and its implications to Macta watershed
- PDF / 1,778,370 Bytes
- 12 Pages / 595.276 x 790.866 pts Page_size
- 16 Downloads / 159 Views
ORIGINAL PAPER
Algerian rainfall innovative trend analysis and its implications to Macta watershed Abdelkader Elouissi 1 & Zekai Şen 2 & Mohammed Habi 3
Received: 13 August 2015 / Accepted: 13 January 2016 # Saudi Society for Geosciences 2016
Abstract Climate and land use changes impact hydrological records and especially precipitation time series, which have significance priority in any water resource planning, operation, management, and maintenance studies. In this paper, Macta watershed monthly precipitation records at 25 stations are studies by the innovative trend analysis method application in order to identify the climatological tendencies in each station leading to the regional variation pattern in the precipitation over the study area. For this purpose, innovative trend template is prepared separately for each station. The comparison of the arithmetic averages provides the trend slope in the meteorological records and the standard deviations provide a measure of variability. These templates also provide qualitative interpretations about the “low,” “medium,” and “high” precipitation range trends. It is noticed that there is the subregion of decreasing trends in the northern part close to the Mediterranean Sea coastal area in the Macta basin, whereas at the south, the trends are in the increasing style. It is noticed
* Abdelkader Elouissi [email protected] Zekai Şen [email protected] Mohammed Habi [email protected]
1
Faculté des Sciences de la Nature et de la Vie, Département des Sciences Agronomiques, Université de Mascara, Mascara, Algeria
2
Civil Engineering Faculty, Hydraulics and water Resources Division, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
3
Faculté de technologie, Département d’hydraulique, Université Abou Bakr Belkaid, B.P. 119 13000, Tlemcen, Algeria
from the quantitative analysis that in the Macta watershed “low” and “medium” rainfall ranges have commonly notrend cases, but “high” rainfall values have decreasing trends. Keywords Algeria . Identification . Rainfall spatial . Temporal . Trend . Slope variability . Test . Template . Watershed
Introduction Water resources are of prime importance, and their request in the future is bound to increase steadily because of the climate and land use changes that may cause precipitation reduction effects in many countries such as Algeria and also extra demand on water and food due to population increase. For these reasons, it is a prerequisite to water resources planning to be able to know the direction of change whether in an increasing or decreasing manner so as to support regional water and food exchange possibilities for the sustainability of a society. Due to its particular geographical features and location on the Mediterranean region, Algeria is among the countries of hardest hit by the impacts of climate change—even though it contributes a very small share of global greenhouse emissions (3.3 ton/person) between 2009 and 2013. Algeria ranks as the 96th country on the Global Climate Risk Index scale (Kreft and David, 2014)
Data Loading...
