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Temporal and Spatial Evaluation of Drought in Agricultural Stability Zones in Syria between 1992 and 2018 by Using SPI Index
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  • Giath Eskedar DOUN,
  • Ahmad NAMAN,
  • Hassan SALEH,
  • Youlla ABOUD
Giath Eskedar DOUN
Gemeral Organization of Remote Sensing, Gemeral Organization of Remote Sensing

Corresponding Author:[email protected]

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Ahmad NAMAN
Ministry of Local Administration & Environment, Ministry of Local Administration & Environment
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Hassan SALEH
General Organization of Remote Sensing, General Organization of Remote Sensing
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Youlla ABOUD
General Organization of Remote Sensing, General Organization of Remote Sensing
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Abstract

This study used data of 165 rain stations for mapping SPI index for winter season at the base of 7 months period (from November to next April). For compensating the lost measurements in stations, we used the Kriging method in ArcGIS10.1 for producing precipitation maps for each period of the year. We used a simple equation for calculating SPI 7 , and modeled the process by using Model Maker tool within the ERDAS 2014. The application of this model over the period from 1992 to 2018 produced twenty-seven annual maps of the SPI 7 in Syria. By plotting the general trend of precipitation changes according to this index, we observed that the entire study area is stable on a normal climatic state close to the annual average during the most of years. By analyzing precipitation and SPI maps using statistical zonal methods, based on agricultural stabilization zones, we found different behaviors of drought in every zone and between these zones.