Algerian rainfall innovative trend analysis and its implications to Macta watershed


Elouissi A., Sen Z., Habi M.

ARABIAN JOURNAL OF GEOSCIENCES, vol.9, no.4, 2016 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 9 Issue: 4
  • Publication Date: 2016
  • Doi Number: 10.1007/s12517-016-2325-x
  • Title of Journal : ARABIAN JOURNAL OF GEOSCIENCES

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 sub-region 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 from the quantitative analysis that in the Macta watershed "low" and "medium" rainfall ranges have commonly no-trend cases, but "high" rainfall values have decreasing trends.