Presentation Information
[TPZePaqP-04]Towards a Digital Twin Framework for Monitoring Marine Heatwaves and Ocean Variability in the Bay of Bengal
*Sourav Sil1 (1. Indian Institute of Technology Bhubaneswar (India))
The Bay of Bengal is one of the most dynamic regions of the Indian Ocean, where ocean circulation, marine heatwaves (MHWs), and tropical cyclones interact across a wide range of spatial and temporal scales. Continuous monitoring and improved prediction of these processes are essential for climate adaptation, disaster preparedness, and sustainable ocean management. The concept of a Digital Twin of the Ocean provides an opportunity to integrate diverse ocean observations and numerical models for a comprehensive representation of the evolving ocean state.
In this study, we present an integrated framework based on our recent research on marine heatwaves, ocean circulation, and cyclone–ocean interactions in the Bay of Bengal. Long-term analyses using satellite, in-situ observations and reanalysis (ORAS5 and JCOPE) show an increasing occurrence of marine heatwaves and highlight the role of upper-ocean thermal conditions in regulating their evolution. Evaluation of high-resolution sea surface temperature products demonstrates their improved capability to resolve coastal thermal variability, which is critical for monitoring marine heatwaves. Data-driven pattern recognition has also been used to identify the dominant modes of surface circulation and their seasonal and interannual variability, providing a simplified representation of the complex ocean dynamics. Furthermore, analyses of recent tropical cyclones indicate that anomalously warm upper-ocean conditions can create a favourable environment for cyclone intensification.
These studies demonstrate the importance of integrating observations, numerical modelling, and data-driven analysis to better understand coupled ocean–atmosphere processes. Such an integrated approach provides essential building blocks for developing regional Digital Twins of the Ocean, enabling improved ocean monitoring, forecasting, and decision support for climate resilience and coastal hazard management in the Bay of Bengal.
In this study, we present an integrated framework based on our recent research on marine heatwaves, ocean circulation, and cyclone–ocean interactions in the Bay of Bengal. Long-term analyses using satellite, in-situ observations and reanalysis (ORAS5 and JCOPE) show an increasing occurrence of marine heatwaves and highlight the role of upper-ocean thermal conditions in regulating their evolution. Evaluation of high-resolution sea surface temperature products demonstrates their improved capability to resolve coastal thermal variability, which is critical for monitoring marine heatwaves. Data-driven pattern recognition has also been used to identify the dominant modes of surface circulation and their seasonal and interannual variability, providing a simplified representation of the complex ocean dynamics. Furthermore, analyses of recent tropical cyclones indicate that anomalously warm upper-ocean conditions can create a favourable environment for cyclone intensification.
These studies demonstrate the importance of integrating observations, numerical modelling, and data-driven analysis to better understand coupled ocean–atmosphere processes. Such an integrated approach provides essential building blocks for developing regional Digital Twins of the Ocean, enabling improved ocean monitoring, forecasting, and decision support for climate resilience and coastal hazard management in the Bay of Bengal.
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