GDP Weekly Array Status Update

Composition of the Global Drifter Array on 14-Sep-2026:

Pacif.Gyre: 583
SIO : 172
DBi : 124
Unknown: 116
Metocean: 111
NKE : 27
TOTAL: 1133



Number of Iridium drifters: 1133

Fraction of array that is Iridium: 100.0 percent

Array size on 7 Sep 2026: 1140 drifters


Added IDs (13):

300534064596280 300534068922890 300534068927880 300534065950140 300534065955200 300534067585440 300534067586770 300534067586790 300534067586860 300534065478330

300534065478400 300534065478540 300534065478380


Lost IDs (20):

300534064008280 300534064597700 300534063488690 300534065284150 300534065282020 300534064009300 300534065061010 300534061750270 300534061755180 300534063900060

300534064293360 300534065065980 300534065160540 300534065160570 300534065161520 300534065164860 300534065471340 300534067586550 300534068117370 300534064236500


Net change: 13 - 20 = -7

New array size on 14 Sep 2026: 1133 drifters.


Death rate: 22.0 deaths per 1250 drifters per 7 days (1147 deaths per 1250 per year).


Mean age of dead drifters: 584 days. Median: 518 days.


Deplog information for dead drifters (underlined: aground/picked up):

ID WMO# DepDate DepLat DepLon ShipManufacturer Type Prgm


Specification sheet info for dead drifters not in deployment log (underlined: aground/picked up):

not in spec sheetnot in spec sheet
ID MANUFACTURER TYPE TRANSMISSION
300534067586550Pacific GySVP3A3
300534065160570Pacific GySVP3A3
300534065160540Pacific GySVP3A3
300534065061010Pacific GyBD2A3
300534068117370Pacific GySVP3A3
300534065471340SIOBD2GHI
300534064236500SIOBD2VHI
300534065164860Pacific GySVP3A3
300534065284150MetoceanBD2GHI
300534064293360Pacific GyBD2A3
300534065161520Pacific GySVP3A3
300534064597700Pacific GyBD2A3
300534065065980Pacific GySVP3A3
300534065282020:
300534064008280SIOBD2GHI
300534064009300NKEBD2A3
300534063488690:
300534063900060Pacific GySVP3A3
300534061750270DBiBD2A3
300534061755180DBiBD2A3