GDP Weekly Array Status Update

Composition of the Global Drifter Array on 08-Jun-2026:

Pacif.Gyre: 512
SIO : 199
Metocean: 172
DBi : 136
Unknown: 38
NKE : 32
TOTAL: 1089



Number of Iridium drifters: 1089

Fraction of array that is Iridium: 100.0 percent

Array size on 1 Jun 2026: 1091 drifters


Added IDs (6):

108719 300234065069420 300534063900080 300534065957780 300534065957800 300534067581560


Lost IDs (8):

300534067959190 300534063019350 300534061281560 300534062090810 300534063901090 300534063902000 300534064297360 300534065665720


Net change: 6 - 8 = -2

New array size on 8 Jun 2026: 1089 drifters.


Death rate: 9.2 deaths per 1250 drifters per 7 days (478 deaths per 1250 per year).


Mean age of dead drifters: 873 days. Median: 994 days.


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

ID WMO# DepDate DepLat DepLon ShipManufacturer Type Prgm
300534061281560560169202-Dec-202160.0105.2SHIRASE Pacific GyBD2GI 31412


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

ID MANUFACTURER TYPE TRANSMISSION
300534065665720SIOBD2GHI
300534067959190MetoceanBD2GHI
300534064297360Pacific GyBD2A3
300534063019350Pacific GyBD2A3
300534063901090Pacific GySVP3A3
300534063902000Pacific GySVP3A3
300534062090810Pacific Gyre SBD 9602