Shifting in Rainy Season Features in the Mekong Delta under the Background of Global Climate Change

Background: Shifting in the rainy season features (RSFs) have caused impishly cultivation activities around the world, especially under the impacts of enhancing climate change. In the Mekong Delta, rainfall is a crucial factor that determines crop sowing and harvesting dates. Methods: This study investigated the RSFs, including the rainy season onset date (RSOD), cessation date (RSCD) and length (LRS), in the Mekong Delta from 1995 to 2022. The study aimed to understand the spatial and temporal variability of the rainfall features and their implications across the Mekong Delta. The study utilized rainfall data at gauge stations across the Mekong Delta, covering a period of 30 years. The study employed descriptive statistical methods to analyze the RSFs, including RSOD, RSCD and LRS. Result: The results revealed the spatial and temporal variability of RSFs across the study area. The analysis of RSOD, RSCDand LRS revealed consistent patterns. However, the SD and CV values suggested moderate variability in these features, indicating the need for further investigation into the factors influencing these variations. The findings highlight the importance of considering RSFs for effective rain-fed resource management and planning in the Mekong Delta.