EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Seasonal variability of eddy kinetic energy in southeastern Arabian Sea

Ullas Mohan Pillai1, Ajith Joseph Kochuparampil1, Roshin Pappukutty Raj2, and Ola Mathias Johannessen3
Ullas Mohan Pillai et al.
  • 1Nansen Environmental Research Centre (India), Amenity Centre- KUFOS, Kochi, India (
  • 2Nansen Environmental and Remote Sensing Centre and Bjerknes Center for Climate Research, Bergen, Norway (
  • 3Nansen Scientific Society, Bergen, Norway (

Eddy kinetic energy (EKE) is a measure of temporal and spatial variability of ocean mesoscale eddies . This study elucidates the key factors that determine the spatial distribution and seasonality of mesoscale eddies of the south-eastern Arabian sea (SEAS) using satellite observational data from Copernicus Marine service data centre, during the time period 1993-2016. In general eddy kinetic energy is found to higher during winter. The higher EKE throughout the winter were found to be due to the barotropic instability of the Winter Monsoon Current . This is owing to current’s barotropic instability due to wind stress curl, resulting in the conversion of mean kinetic energy to eddy kinetic energy. The ESA OC-CCI data were used to study the influence of EKE on the primary productivity using linear regression and correlation analysis. A significant positive correlation between EKE and chlorophyll-a concentration during winter monsoon indicates the impact of EKE on the distribution of surface chlorophyll-a concentration over the SEAS during winter monsoon.  

How to cite: Mohan Pillai, U., Joseph Kochuparampil, A., Pappukutty Raj, R., and Mathias Johannessen, O.: Seasonal variability of eddy kinetic energy in southeastern Arabian Sea, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-7396,, 2022.


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