GDP Weekly Array Status Update

Composition of the Global Drifter Array on 17-Aug-2026:

Pacif.Gyre: 582
SIO : 181
DBi : 129
Metocean: 118
Unknown: 84
NKE : 31
TOTAL: 1125



Number of Iridium drifters: 1125

Fraction of array that is Iridium: 100.0 percent

Array size on 10 Aug 2026: 1100 drifters


Added IDs (33):

300534067610740 300534067618710 300534067615630 300534063013260 300534062360410 300534065061010 300534063012300 300534065272670 300534067582120 300534067585560

300534067585870 300534067586040 300534067586050 300534067586060 300534067586080 300534067586090 300534067586110 300534067586220 300534067586230 300534067586390

300534067586480 300534068018500 300534068112360 300534068112370 300534068113350 300534068115330 300534068118340 300534068119370 300534068640610 300534068645580

300534068647590 300534068648590 300534068649610


Lost IDs (8):

300534064900360 300234067879450 300534060716650 300534063900080 300534063902000 300534064396970 300534065161330 300534065367220


Net change: 33 - 8 = 25

New array size on 17 Aug 2026: 1125 drifters.


Death rate: 9.0 deaths per 1250 drifters per 7 days (469 deaths per 1250 per year).


Mean age of dead drifters: 940 days. Median: 760 days.


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

ID WMO# DepDate DepLat DepLon ShipManufacturer Type Prgm
300234067879450640262105-Jun-202144.1-8.1LAUDATO SI FRA Pacific GyBD2GI 21321


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

ID MANUFACTURER TYPE TRANSMISSION
300534065161330Pacific GySVP3A3
300534065367220Pacific GySVP3A3
300534064396970Pacific GySVP3A3
300534064900360SIOBD2GHI
300534060716650Pacific GyBD2A3
300534063902000Pacific GySVP3A3
300534063900080Pacific GySVP3A3