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| Scripps Institution of Oceanography's Tropical Atmosphere Ocean array | |
|---|---|
| Name | Tropical Atmosphere Ocean array |
| Caption | TAO array surface buoy and mooring schematic |
| Established | 1994 |
| Location | Tropical Pacific Ocean |
| Type | Oceanographic observing system |
| Owner | Scripps Institution of Oceanography |
Scripps Institution of Oceanography's Tropical Atmosphere Ocean array is an ocean-observing buoy network deployed across the tropical Pacific to monitor climate variability, ocean-atmosphere interactions, and El Niño–Southern Oscillation conditions. The array provides real-time measurements of sea surface temperature, subsurface temperatures, winds, and currents that inform seasonal forecasting, climate research, and operational services. Managed and maintained through collaborations among international institutions, the array underpins research linking tropical dynamics to global climate phenomena.
The Tropical Atmosphere Ocean array spans the equatorial Pacific between the maritime regions near Indonesia, Papua New Guinea, and the western Pacific basin to the eastern Pacific adjacent to Ecuador, Peru, and the Galápagos Islands. It was designed to observe processes relevant to El Niño–Southern Oscillation, Pacific Decadal Oscillation, sea surface temperature variability, and air-sea fluxes implicated in teleconnections such as those affecting North America, Australia, and East Asia. Data from the array support operational centers including the National Oceanic and Atmospheric Administration, Japan Meteorological Agency, Bureau of Meteorology (Australia), and research programs at institutions like Scripps Institution of Oceanography, NOAA Pacific Marine Environmental Laboratory, and the International CLIVAR Project. The network complements satellite missions such as TOPEX/Poseidon, Jason-1, Jason-2, Jason-3, and Aqua.
Plans for a tropical Pacific moored array emerged from scientific priorities articulated at meetings of World Climate Research Programme, Intergovernmental Oceanographic Commission, and panels convened by National Research Council (United States). Initial deployments in the early 1990s followed field efforts like the Tropical Ocean Global Atmosphere programme and trials by NOAA and Scripps Institution of Oceanography. The array’s formal expansion coincided with heightened interest after major El Niño events, integrating expertise from Woods Hole Oceanographic Institution, Lamont–Doherty Earth Observatory, University of Washington, and CSIRO. Funding and logistics involved agencies such as National Science Foundation, NASA, and regional partners including Instituto Geofísico del Perú and Universidad San Francisco de Quito.
Buoys and moorings use sensors from manufacturers and labs associated with Scripps Institution of Oceanography, NOAA Pacific Marine Environmental Laboratory, and university workshops at Scripps and Woods Hole. Typical instrumentation includes thermistors, current meters, barometers, and anemometers integrated with acoustic doppler current profilers produced in collaboration with U.S. Navy laboratories and academic groups at University of Hawaii at Mānoa. Mooring designs reflect engineering input from Naval Postgraduate School and ship support by research vessels such as RV Ron Brown, RV Melville, and RV Roger Revelle. Mooring components and sensor calibration protocols reference standards from National Institute of Standards and Technology and intercomparison campaigns with Argo floats and XBT transects.
Real-time telemetry uses satellite relays supported by systems operated by NOAA, EUMETSAT, and Iridium Communications. Data streams are processed at operations centers including Scripps Institution of Oceanography, NOAA Climate Prediction Center, and regional forecasting hubs in Peru and Ecuador. Quality control procedures draw on methodologies developed at Lamont–Doherty Earth Observatory, University of California, San Diego, and Met Office research teams. Processed datasets feed assimilation systems at centers such as European Centre for Medium-Range Weather Forecasts, National Centers for Environmental Prediction, and the International Research Institute for Climate and Society. Long-term archives reside in repositories used by World Data Center networks and climate databases curated by NOAA National Centers for Environmental Information.
The array has been central to diagnosing onset mechanisms for El Niño and La Niña, constraining ocean heat content anomalies linked to the Pacific Decadal Oscillation and informing attribution studies of extreme weather events affecting California, Peru, and Japan. Studies using TAO observations have improved coupled model initializations at Met Office, CMC (Canadian Meteorological Centre), and Japan Agency for Marine-Earth Science and Technology leading to enhanced seasonal forecasts. Research teams at Scripps, Lamont–Doherty, University of Miami, University of Hawaii, University of Washington, and University of California, Los Angeles have published analyses on equatorial Kelvin waves, upwelling dynamics off South America, and wind stress variability linked to tropical cyclones and monsoon variability as studied by Indian Institute of Tropical Meteorology. Cross-disciplinary work ties TAO records to paleoceanographic proxies from IMAGES coring expeditions and instrumental comparisons with ARGO to assess decadal change.
Operational stewardship is coordinated among Scripps Institution of Oceanography, NOAA, JAMSTEC (Japan Agency for Marine-Earth Science and Technology), CSIR (South Africa), and regional agencies including Instituto del Mar del Perú. Maintenance cruises involve collaboration with naval research vessels and university fleets from Scripps Institution of Oceanography, Woods Hole Oceanographic Institution, and Universidad San Marcos. International governance includes liaison with Intergovernmental Panel on Climate Change authors and data provision to programs such as Global Climate Observing System and Global Ocean Observing System. Training and capacity building engage institutions like University of Tokyo, Peking University, and National Autonomous University of Mexico.
Planned upgrades consider integration with autonomous platforms from Scripps Institution of Oceanography’s engineering groups, increased synergy with the Argo program, and enhanced satellite calibration for missions like Sentinel-6 Michael Freilich and potential future Surface Water and Ocean Topography missions. Challenges include funding cycles tied to agencies such as National Science Foundation and NOAA, marine debris impacts noted by National OceanService, and maintenance logistics amid geopolitical shifts affecting access to exclusive economic zones near Ecuador and Indonesia. Technological advances from collaborations with NASA, European Space Agency, JAXA, and private firms could enable improved sensor suites monitoring biogeochemical parameters alongside physical variables.
Category:Oceanography Category:Scripps Institution of Oceanography Category:Climate monitoring