More than one hundred drifting buoys are operating in the Indian Ocean and
transmit their data on the GTS (Global Telecommunication System of WMO). About
80% of them report air pressure data in addition to sea-surface temperature.
Deployments are generally carried out by research vessels and ships of opportunity plying in the
Indian Ocean from many harbour from Australia, India, South Africa, Kenya and La Reunion.
Some ship voyages to remote islands are useful too for deployments in the southern latitudes : Heard I. from Australia ;
Amsterdam I., Kerguelen and Crozet Is. from La Reunion and Marion Is. from South Africa.
Use this website to download GoogleEarth compatible files (*.kmz) : Buoys GoogleEarth maps. Once you have selected the period (daily, monthly, yearly) and the area (eventually) you can access to data and QCdata by a click on the dot of a buoy.
The National Institute of Ocean Technology (NIOT) has established the National Data Buoy Programme (NDBP), an array of moored buoys.
Building upon the tropical mooring networks of India and Japan, the CLIVAR/GOOS Indian Ocean Panel (IOP) developed a plan in 2004 for the Research Moored Array for African-Asian-Australian Monsoon Analysis and Prediction (RAMA), a new observational network designed to address outstanding scientific questions related to Indian Ocean variability and the monsoons. The plan consists of basin scale network of 46 deep ocean moorings, like TAO/TRITON and PIRATA.
At present most of the data are recovered through the Argos system and sent on the GTS thanks to the processing centers of
Toulouse (France) and Largo (USA). Some drifting buoys use the Iridium communication system to send their data ashore.
Real time data from the Indian
moored buoys operated by the National Institute of Ocean Technology (NIOT)
are transmitted ashore through Inmarsat and Insat and distributed onto the GTS by the
Indian Meteorological Department (IMD). Bulletin headers are SSVX01 DEMS.
Data quality control
Near real-time quality control of GTS buoy data from the programme are accomplished in the context of the
quality control guidelines co-ordinated by the DBCP.
Monthly statistics can be downloaded or
checked for particular buoys.
Other buoy data quality control and archival activities are relevant to the programme, in particular those
of the Global Drifter Data Assembly Center operated by AOML/NOAA
Last revised : February 15th, 2017