For more than 30 years, drifting buoys had been sending their observations ashore thanks to the Argos system, exclusively. Argos data are processed by CLS in Toulouse (France) and in Largo (USA). For many years, data had been sent onto the GTS in FM18 BUOY and FM94 BUFR (never-validated WMO template), in parallel.
Since 2008, Iridium Short Burst Data (SBD) has been more and more used for the transmission of drifting buoy data ashore. Several centres are processing the raw data in order to send them onto the GTS in FM18 BUOY. Out of them, some are transmitted in FM94 BUFR (never-validated WMO template), in parallel.
Since the June 1st, 2015, drifting buoy data processed by CLS (Toulouse and America) and Meteo-France have been sent onto the GTS according to template TM315009. This should represent about 90% of drifting buoy data. A more accurate survey will be performed in September 2015.
GTS headers for drifting buoy data start with character string 'IOB'.
Drifting buoy BUFR data - Survey on October 12th, 2014
(Data received and processed at Meteo-France)
| CCCC | Data Prodider | FM94-BUFR | Template | FM18 BUOY only | FM13 SHIP only | Remark |
| CWAO | Joubeh | 3 | Buoy (not validated) | 89 | 0 | BUFR or FM18 |
| KARS | CLS America | 1066 | Buoy (not validated) | 0 | 0 | |
| KWBC | Pacific Gyre | 22 | Buoy (not validated) | 0 | 0 | BUFR only |
| KWNB | NDBC | 0 | 1 | 1 | ||
| LFPW | Meteo-France | 252 | Buoy (not validated) | 0 | 0 | |
| LFVW | CLS Toulouse | 15 | Buoy (not validated) | 0 | 0 | |
| RJTD | JMA | 6 | Buoy (not validated) | 0 | 0 | |
| Total | 1364 | 90 | 1 | 1455 buoys in all |
Observations sent in BUFR are also sent in FM18-BUOY code in parallel, excepted those of KWBC