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IndOOS—a sustained ocean observing system in the Indian Ocean for climate research

IndOOS—a sustained ocean observing system in the Indian Ocean for climate research. Gary Meyers Co-Chair CLIVAR/GOOS Indian Ocean Panel. With Contributions from IOP Members. IUGG Perugia, Italy July 2007. Contents. History of the Indian Ocean Panel

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IndOOS—a sustained ocean observing system in the Indian Ocean for climate research

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  1. IndOOS—a sustained ocean observing system in the Indian Ocean for climate research • Gary Meyers • Co-Chair CLIVAR/GOOS • Indian Ocean Panel With Contributions from IOP Members IUGG Perugia, Italy July 2007

  2. Contents • History of the Indian Ocean Panel • Scientific rationale for an Observing System in the Indian ocean • Plan for IndOOS • Implementation so far

  3. History—1980’s and 1990’s M. McPhaden pers. comm. Temperature 0°, 110°W ?

  4. IndOOS Planning and Coordination • Indian Ocean Panel established in 2004 after OceanObs(1999), SOCIO Workshop (2000) and IOGOOS conference (2002) • Four meetings: • 2004 Puna IITM (Joint with AAMP) • 2005 Hobart CSIRO Marine • 2006 Honolulu IPRC • 2007 Pretoria SAWS • Meeting reports onCLIVAR website under Indian Ocean Panel

  5. Indian Ocean Panel

  6. IOP IndOOS Report 2006 The role of the Indian Ocean in the climate system—implementation plan for sustained observationshttp://eprints.soton.ac.uk/19645/ Scientific rationale and technical design --Research issues: review, questions--Basin scale mooring array --Integrated approach to moorings, Argo floats, XBT lines, surface drifters, tide gauges --Alternative observational strategies assessed by observing system simulations

  7. Progress in the Indian Ocean—late 1990’s on • Seasonal monsoon variability—the oceans role • Intraseasonal variability (e.g. MJO)—interactions and feedbacks with upper ocean • Monsoon  ENSO interactions • Indian Ocean Dipole (ENSO-like phenomenon) • Decadal variability and warming trends since the 1970s • Indonesian throughflow • General ocean circulation, ocean heat transport and their variability Indian Ocean Dipole

  8. IndOOS plan: Multi-platform systemaround a basin-scale mooring array Key new element—mooring array: ocean obs + meteorology Argo floats 3°x 3° Drifters 5°x 5° ~20 real-time tide gauges Enhanced XBT lines to monitor Indonesian Throughflow, inflow to western boundary, Java upwelling and 10°S thermocline ridge Carbon/hydro cruise High density XBT Frequently repeated XBT Regional mooring arrays

  9. Present status basin scale array Recent: China France NOAA 1-6 years Recent addition

  10. Forward plan—facing up to vandalism 1-6 years Recent addition

  11. Argo Present Status • ~360/390north of 30°S • The challenge = sustainability

  12. Integrated IndOOS • XBT lines—all active (a few not up to recommended sampling frequency) • Data Portal—INCOIS/APDRC (distributed archive) • Process studies—CIRENE and MISMO • IOGOOS—links to coastal applications • SIBER—links to enhance biogeochemical and biological oceanography

  13. Conclusion • Remarkable progress in establishing sustained observations in the Indian Ocean since 2004 • Remaining challenges • Design and enhance coverage of the subtropical region • Full implementation of the IOP plan • Engage high governmental levels and departments that can sustain the OS

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