Spatiotemporal Trend Analysis of Temperature in Euphrates River Basin
Keywords:
Mann–Kendall. Sen's slope. Temperature. Spatiotemporal analysis, Trend.Abstract
Euphrates is the largest river in Iraq. Due to the changing climate and intensifying human activities, the river hydrologic system has changed. In this study, temperature and climate variables were among the leading causes of the changes in the Euphrates River Basin. The nature of the changes is examined using data gathered from 19 weather stations between 1981 and 2021. The four sub-catchments of the River Basin are studied using the sequential Mann-Kendall test analysis to identify temporal trends and abrupt changes. An annual trend test for non-parametric trends at the basin scale reveals an upward trend in the temperature over the previous 40 years. Throughout the entire time, there has been an upward trend in potential evaporation, which has increased since 1981. These factors significantly decrease runoff in addition to being impacted by human activity.
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