GDP Weekly Array Status Update

Composition of the Global Drifter Array on 13-Apr-2026:

Pacif.Gyre: 539
Unknown: 155
Metocean: 146
DBi : 141
SIO : 117
NKE : 28
TOTAL: 1126



Number of Iridium drifters: 1126

Fraction of array that is Iridium: 100.0 percent

Array size on 6 Apr 2026: 1138 drifters


Added IDs (10):

300534062094750 300534065061010 300534065060990 300534065060080 300534065060060 300534060719690 300534065953480 300534065477550 300534065477560 300534065477580


Lost IDs (22):

300534063217060 300534061753080 300534064897810 300534062471490 300534065284140 300534065287130 300534063488360 300534060157360 300534060524480 300534061756080

300534061757270 300534063011430 300534063386150 300534063387260 300534063486260 300534063704690 300534063900060 300534063900080 300534063901090 300534064900950

300534065165520 300534065378920


Net change: 10 - 22 = -12

New array size on 13 Apr 2026: 1126 drifters.


Death rate: 24.3 deaths per 1250 drifters per 7 days (1267 deaths per 1250 per year).


Mean age of dead drifters: 635 days. Median: 574 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):

ID MANUFACTURER TYPE TRANSMISSION
300534063486260MetoceanSVP3A3
300534063386150MetoceanSVP3A3
300534063387260MetoceanSVP3A3
300534065165520Pacific GySVP3A3
300534065287130MetoceanBD2GHI
300534064897810NKEBD2A3
300534065378920Pacific GySVP3A3
300534065284140MetoceanBD2GHI
300534061753080SIOBD2GHI
300534063704690Pacific GySVP3A3
300534063217060NKEBD2GHI
300534062471490NKEBD2GHI
300534061756080SIOBD2GHI
300534063011430Pacific GyBD2A3
300534060524480Pacific GyBD2A3
300534060157360Pacific GyBD2A3
300534064900950SIOBD2GHI
300534063488360MetoceanBD2A3
300534063901090Pacific GySVP3A3
300534063900060Pacific GySVP3A3
300534063900080Pacific GySVP3A3
300534061757270DBi SBD 9602