Study of surface and vertical sea temperatures during the process of tropical cyclone formation in the territory of Indonesia (case study 2019-2021)

Abstract

Abstract A tropical cyclone is an atmospheric phenomenon that has a system of low air pressure that forms over the oceans in the warm tropics. Tropical cyclones can form in oceans with sea surface temperatures above 26.5°C. In addition to the sea surface temperature which must be more than 26.5°C, the depth of warm sea water temperature strongly supports the formation of tropical cyclones in the territory of Indonesia. In this study, research was conducted on the surface and vertical temperatures of the sea during the formation of tropical cyclones or when cyclone seeds occurred in the case of tropical cyclones that occurred in 2019-2021 in the territory of Indonesia. The data used is processed using Ocean Data View 4.1 to determine the distribution of surface and vertical sea temperatures. Based on the results on this study, the vertical distribution of sea surface temperatures during the formation of tropical cyclones in Indonesia has an average sea temperature higher than 26.5°C which reaches a depth of 64 meters to 70 meters. Then the sea surface temperature during the tropical cyclone formation process averaged 28 °C to 29 °C.