Coastal turbidity marked by low incidence of percentage of light transmission and an isolated offshore freshwater plume characterized with higher chlorophyll were the important features noticed off Paradip.
The temporal variations at TS2 showed conspicuous arrival of freshwater plume causing a fall in sea surface salinity by about 4 psu during phase I (27 July - 4 August, 1999).
25. Large Scale context of BOBMEX from satellite and other data.
D. Sengupta, Center for Atmospheric and Oceanic Sciences, Indian, Institute of Science, Bangalore.
Data from satellites and reanalysis were used to study the structure and propagation of monsoon intra-seasonal oscillations in the period 1998-2000. Further study of these data sets can help in understanding the physics of these oscillations of the air-sea system.
26 Intraseasonal variation of Sea Surface Salinity in the Bay of Bengal during southwest monsoons of 1998 and 1999.
The presence of freshwater plume and its behaviour (in size and location) during different southwest monsoons was pointed out.
The importance of a new dynamic parameter, the Effective Oceanic Layer (EOL) and its close connection with the atmospheric convection and cyclogenesis over the Bay of Bengal was highlighted.
Encouraging statistical relationships between EOL, Sea Surface Salinity (SSS) and the OLR were discussed and the possibility of estimation of SSS from the given OLR data was emphasized.
Variation of estimated SSS for the BOBMEX-99 data set was discussed.
Necessity of OLR data at 1°x1° grids at synoptic hours was requested for further studies.
27 Temporal variability of the upper ocean thermal structure in the northern Bay of Bengal during BOBMEX-99
The temporal variation of the upper ocean thermal structure during intensive observational periods (IOP) of 2-3 days duration and the related parameters was discussed.
This study revealed marginal diurnal variation in SST (between 0.4° and 1.0°C) and weaker inversions in temperature (0.3° to 0.6°C).