Abstract
Upwelling is a basic phenomenon in the coastal of Ninh Thuan - Binh Thuan that usually takes in the summer. The cold water mass is pushed up from the bottom, formed by the combination of the southwest monsoon with the characteristics of the bottom topography, shoreline, divergent and converging of the flow. Upwelling water often provides a rich source of phytoplankton, rich in nutrients and plays an important role in maintaining the marine ecosystem. In this study, the upwelling map of the coastal of Ninh Thuan - Binh Thuan was created from daily MODIS Aqua SST data processed at level 2 for the period 2015 - 2022, using a method based on relative temperature anomalies with offshore. The results show that in this area; the upwelling appears from June to the end of September every year when the southwest monsoon develops strongly. The area of the upwelling center ranges from 200 to more than 11.000 km2, which is an index that helps managers research, plan and exploit fishing grounds