Investigating the Future Flood and Drought Shifts in the Transboundary Srepok River basin Using CMIP6 Projections

Abstract

Quantifying the intensity and frequency of climatic extremes under the impacts of climate change is crucial for effective water resource management. In this study, we utilize the Soil and Water Assessment Tool (SWAT) hydrological model, robust indices, e.g., Standardized Precipitation Index (SPI) and Standardized Streamflow Index (SSI) as well as the Interquartile Range (IQR) method for a comprehensive analysis of the river flow response to future climate scenarios towards 2090. Four General Circulation Models (GCMs) under two Shared Socioeconomic Pathways (SSPs) have been used, including BCC-CSM2-MR, CanESM5, MIROC6, and MRI-ESM2-0. We aim to reveal the future impacts of extreme events and their potential consequences for local livelihoods and human well-being in the Srepok River basin-a major tributary of the Mekong River basin in Southeast Asia. Our findings include (1) a significant discrepancy between extreme events found with more flood events projected towards 2090; (2) a shift in precipitation patterns with an increase in intensity is observed; and (3) a correlation between climatic extremes and regional characteristics has been identified. This work provides valuable insights into the anticipated changes in climatic extremes under the impacts of climate change and serves as the scientific basis for stakeholders and decision-makers to develop adaptative strategies and sustainable plans to enhance the region's resilience.

Assessing the Spatiotemporal Variations in the Hydrological Response of the Qin River Basin in Loess Plateau, China

“…With issues such as population growth, pollution, and the development of industrial and agricultural sectors, the scarcity of water resources has increasingly become a problem that hinders social development [1][2][3]. Climate change and human disturbance seriously affect the evolutionary path and direction of hydrology, resulting in changes in runoff, runoff processes, and runoff composition [4,5]. Accordingly, spatial and temporal distributions of hydrological processes in basins have also changed [6].…”

The Performance of Landsat-8 and Landsat-9 Data for Water Body Extraction Based on Various Water Indices: A Comparative Analysis

“…Surface water, a vital component of Earth's environmental system, plays a significant role in supporting human productivity and providing immense environmental and ecological benefits [1,2]. However, the rapid and substantial fluctuations in these water bodies, driven by climatic change and human activities, have led to a series of detrimental water-related phenomena, including water scarcity, flooding, and pollution [3][4][5][6][7]. The importance of accurately identifying the dynamic changes in water bodies is undisputed.…”