Relationship between Sea Level and Sea Surface Salinity in the Maritime Continent
Event: 2019 Ocean Surface Topography Science Team Meeting
Session: Science I: Climate data records for understanding the causes of global and regional sea level variability and change
Presentation type: Type Poster
The Maritime Continent is a tropical chokepoint of the global ocean circulation system. Ocean currents in this region, especially the Indonesian throughflow, regulate Indo-Pacific oceanic exchanges (including heat, freshwater, nutrients, carbon). These currents influence physical process, marine biogeochemistry, and climate variability in the Indo-Pacific sector. Sea level variations in the Maritime Continent have significant implications to the regional ocean currents. Previous studies of sea level variations in this region have focused mostly on the wind forcing (both local and remote). However, the Maritime Continent is heavily influenced by regional water cycle across various time scales, thereby inducing large variations of sea surface salinity (SSS). In this study, we examine the relation of SSS and sea level anomaly (SLA) satellite observations on intraseasonal, seasonal, and interannual time scales. We also estimate the contributions of upper-layer salinity to SLA variations on these time scales. The implications to the Indonesian throughflow will also be discussed.