01-05 December 2025
INCOIS, Hyderabad, India.
| Abstract Submission No. | ABS-06-0267 |
| Title of Abstract | Impact of Satellite Chl-a and Other Physical Parameters on Deriving Reliable Export Production Estimates over Indian Oce |
| Authors | Aditi Deshpande*, Vinu Valsala, Gayatri Uchale, Rama Aslekar, Smitha Ratheesh |
| Organisation | Savitribai Phule Pune University, Pune |
| Address | Department of Atmospheric and Space Sciences, Savitribai Phule Pune University, Ganeshkhind Pune, Maharashtra, India Pincode: 411007 E-mail: aditid84@gmail.com |
| Country | India |
| Presentation | Oral |
| Abstract | The Indian Ocean has productive coastal upwelling systems characterized by phytoplankton blooms both in summer and winter. In this study, the daily (or 3-daily) surface ocean Chl-a parameter is utilised for the calculation of compensation depth (Zc). The Ocean Tracer Transport Model is forced using GFDL MOM-4 data and reanalysed chlorophyll data and the results were compared over the Indian Ocean region. A comparison shows an increase in compensation depth during ON and DJF, with maximum depth in the southern Indian Ocean. Model run using reanalysed chlorophyll shows deeper compensation depth than that using GFDL chlorophyll. In the reanalysis data, the compensation depth maxima occurs closer to Madagascar, whereas in GFDL the maxima is situated south of the Southern Indian Ocean (for the months of DJF and ON). There is a clear overestimation of the compensation depth (larger mean value) in the run forced with reanalysed chlorophyll data as compared to GFDL. In addition, new production and export production values have also been analysed. |
| Are you part of IIOE-2 endorsed project | no |
| Keywords | Indian Ocean, ocean biogeochemistry, Oceansat-III |
| For Awards | no |