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Report on Argo User’s Workshop at INCOIS

Report on Argo User’s Workshop at INCOIS. M. Ravichandran Indian National Centre for Ocean Information Services (INCOIS), Ministry of Earth Sciences Hyderabad, India. July 20-22, 2008. Why National Argo science workshop?. To know and understand

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Report on Argo User’s Workshop at INCOIS

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  1. Report on Argo User’s Workshop at INCOIS M. Ravichandran Indian National Centre for Ocean Information Services (INCOIS), Ministry of Earth Sciences Hyderabad, India July 20-22, 2008

  2. Why National Argo science workshop? To know and understand • What are the different applications using Argo data in Indian Ocean? • What we have learned from Argo and what we need to learn? • What are the efforts in assimilating Argo in OGCM? • Whether spatial, temporal and vertical sampling is adequate for such applications? • What are the products required for other applications from argo? • Requirement of new parameters from Argo such as Oxygen, chlorophyll, etc

  3. Objective • To take stock of utilization of Argo floats data by Indian Scientists • To understand the requirement and/or modification in temporal and spatial distribution of floats and need of additional sensors. • To motivate University students to use Argo data for different applications /studies

  4. Participating Institutions: • 63 Participants from 17 Institutions/University • Andhra University, Vishakapatnam • Cochin University of Science and Technology, Kochi • Indian Institute of Technology, Delhi • Indian Institute of Science, Bangalore • Indian Institute of Tropical Meteorology, Pune • Indian Navy • INCOIS, Hyderabad • Ministry of Earth Sciences, New Delhi • Nansen Environmental Research Center, Kochi • National Centre for Antarctic and Ocean Research, Goa • National Centre for Medium Range Forecast, New Delhi • National Institute of Oceanography, Goa • National Remote Sensing Agency, Hyderabad. • Naval Physical and Oceanographic Laboratory, Kochi • Naval Operational Data Processing and Analysis Center, Kochi • Space Application Centre, ISRO, Ahmedabad • University of Hyderbad, Hyderbad + Prof. Stephen Riser, University of Washington

  5. Sessions • Inaugural session • Status of Argo project (Global & India) • Indian Ocean Process studies • Indian Ocean dynamics and validation of models • New sensor requirement • Indian Ocean Dipole and Monsoon 26 contributed paper + 5 Invited talks

  6. Invited talk • Role of Argo data in monitoring climate change together with Coupled climate models – Prof. J. Srininivasan, IISc • Broad features of the Indian Ocean dynamics and thermodynamics, and some of the outstanding challenging problems – Dr. R R Rao, NPOL • The historical measurements of salinity in the Indian Ocean – Dr. S. R. Shetye, NIO • Development of Argo floats since 1950 interms of Technology - Prof. Stephen Riser, UW, USA • Air-sea interaction over Indian Ocean with special emphasis on Indian Ocean dipole – Prof. B. N. Goswami, IITM

  7. Indian Ocean process studies • Buoyancy flux changes in the Bay of Bengal • Upper ocean response of T & S to local atmospheric forcing • Mixed layer variability in Arabian Sea • Delineating upwelling zones, • Role salinity in thermal inversion in Arabian sea • Validation of sonic layer depth • Contribution of halo-steric height in dynamic height • …..

  8. Indian Ocean dynamics and validation of models • Impact of summer monsoon ISO in tropical Indian ocean using Argo and OGCM • Surface currents from Argo, altimeter and scatterometer • Validation of OGCM using Argo observations • Analysed Ocean state using Argo and OGCM

  9. Indian Ocean dipole and monsoon • Generation and termination of IOD mechanism • Impact of IOD on SSS revealed from Argo, • Role of subsurface Temp anomalies in the SW Indian Ocean during 2006 dipole event • Indian Oean – Monsoon interactions and drought over India in relation to Indian ocean sub-surface features

  10. Recommendations & Suggestions • Argo data has been widely utilized to understand the Indian Ocean dynamics, especially Dipole event, understanding the monsoon system in relation to heat content, buoyancy flux of the Indian Ocean and for validation of OGCM. • Studies need to be initiated to assimilate Argo floats in OGCM • In the Bay of Bengal, Argo floats with 5 days cycling period need to be deployed. These observations are to be sustained over a long period by deploying new floats as and when required. These observations are required for studying the intra-seasonal variations of thermo-haline structure. • New Iridium floats with an additional high-resolution CTD are to be deployed in the Bay of Bengal. This additional CTD sensors measures P, T, S at very fine resolution (2 m) from 200 m upto the surface. • Quality control methods followed by various institutions need to be pooled. All such Institutes to provide feedback on quality of data to INCOIS.

  11. Presented a certificate to ORV Sagarkanya for deploying 100 floats Indian ocean (Signed by AST co-chairs)

  12. Thank you for your kind attention

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