Detection of drought patterns using remote sensing and spectral clues in the province of Dhi Qar for the period (1987-2020)

Abstract

The interest in monitoring drought has increased with the development of monitoring tools, which are no longer confined to meteorological stations only, but various measurement devices and programs have emerged, some of which are field and space-based monitoring stations are available on the Internet, which enables the researcher to monitor and control the climate elements individually represented by (remote sensing) technology. (after) and the available satellite visuals enable us to study climatic variables and then apply spectral clues as indicators and indications through which to reach and detect multiple manifestations, including drought, and this study came to reveal patterns of drought in the province of Dhi Qar, which is geographically located in the southern part of Iraq And astronomer between two circles (50'0°30"N32°00'0-N) north and arc Length ('0'50°45E47°00"0-E) using remote sensing techniques represented by judicial monitoring stations by 6 stations in addition to the earth-water station (Nasiriyah). The study aimed to analyze drought patterns in terms of spectral indicators and clues. The study relied on the use of the second improved vegetation cover index (EVI2) to detect the density of vegetation cover. The study concluded that the spectral evidence has the ability to find variation in drought patterns in a high and accurate way, as it does not deal with climatic drought only, but its values change according to the changing data on the land. Reality, whether natural or human variables