Table 1: GPS RO missions providing RO measurements through tropical cyclone regions defined via the respective years HBTRA.

MissionMission IDOperation1DVAR

GPS METeorologyGPS/MET1995–1997ECMWF
Satellite de Aplicaciones Cientificas-CSAC-C2001-2002ECMWF
CHAllenging Minisatellite PayloadCHAMP2001ECMWF
Constellation Observing System for Meteorology, Ionosphere, and ClimateCOSMIC2006GFS/AVN