GDP Weekly Array Status Update

Composition of the Global Drifter Array on 05-Oct-2026:

Pacif.Gyre: 581
SIO : 227
DBi : 123
Metocean: 117
Unknown: 57
NKE : 33
TOTAL: 1138



Number of Iridium drifters: 1138

Fraction of array that is Iridium: 100.0 percent

Array size on 28 Sep 2026: 1133 drifters


Added IDs (21):

300534068090860 300534068097790 300534068095850 300534065061050 300534063017410 300534063804130 300534065262780 300534065361210 300534065952130 300534065952150

300534065957130 300534065957170 300534065957210 300534065958120 300534067582510 300534067582520 300534067586890 300534068050720 300534068050930 300534068150030

300534068150040


Lost IDs (16):

300534063481400 300534067814630 300534069706090 300534065287030 300534061656080 300534062778990 300534063900080 300534065165360 300534065473470 300534065951760

300534067585300 300534067585340 300534067585350 300534067585440 300534067585450 300534065478510


Net change: 21 - 16 = 5

New array size on 5 Oct 2026: 1138 drifters.


Death rate: 17.6 deaths per 1250 drifters per 7 days (918 deaths per 1250 per year).


Mean age of dead drifters: 476 days. Median: 220 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
300534069706090 Metocean BD2A3 
300534065478510:  
300534067585350 Pacific Gy SVP3A3 
300534067585300 Pacific Gy SVP3A3 
300534067585340 Pacific Gy SVP3A3 
300534067585440 Pacific Gy SVP3A3 
300534067585450 Pacific Gy SVP3A3 
300534065951760 SIO BD2GHI 
300534067814630 Metocean BD2A3 
300534065165360 Pacific Gy SVP3A3 
300534065473470 Pacific Gy SVP3A3 
300534065287030:  
300534063481400 Metocean BD2A3 
300534063900080 Pacific Gy SVP3A3 
300534062778990 Metocean SVP3A3 
300534061656080 Pacific Gyre    SBD 9602