GDP Weekly Array Status Update



Composition of the Global Drifter Array on 25-Sep-2023:

DBi : 393
Pacif.Gyre: 365
SIO : 126
Metocean: 96
Unknown: 71
NKE : 36
Marlin Yug: 2
TOTAL: 1089



Number of Iridium drifters: 1089

Fraction of array that is Iridium: 100.0 percent

Array size on 18 Sep 2023: 1094 drifters


Added IDs (9):

300234066570320 300534062099720 300534062489950 300534062585100 300534063019390 300534064649980 300534064703240 300534064709730 300534064709880


Lost IDs (14):

300234064018240 300234066338830 300234066430400 300234066439220 300234066439880 300234068343730 300534061071640 300534061384200 300534061397950 300534062025800

300534062123370 300534063319660 300534063488680 300534064401710


Net change: 9 - 14 = -5

New array size on 25 Sep 2023: 1089 drifters.


Death rate: 16.0 deaths per 1250 drifters per 7 days (836 deaths per 1250 per year).


Mean age of dead drifters: 762 days. Median: 704 days.


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

ID WMO# DepDate DepLat DepLon ShipManufacturer Type Prgm
300534061071640620456303-Apr-202134.8-62.0UNKNOWN NKE BD2GI 2222
300234066430400540174828-Nov-2020-60.0-174.6R/V ARAON Pacific GyBD2GI 21312
300234068343730440265223-Aug-202060.0-47.2R/V MARIA S. MESIO SVPGHI 21312
300234066439220160165015-Aug-2019-52.071.0ASTROLABE Pacific GyBD2GI 21321
300234066439880620264006-Jun-201919.8-41.0COLIBRI Pacific GyBD2GI 21321
300234066338830170158228-Apr-2019-55.030.0THOMAS THOMPSONPacific GyBD2GI 21312
300234064018240310151117-Oct-2018-38.6-53.9Brazilian NAVY Metocean BD2GI 31312


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

not in spec sheetnot in spec sheetnot in spec sheet
ID MANUFACTURER TYPE TRANSMISSION
300534064401710:
300534061397950:
300534062025800DBiBD2A3
300534063488680:
300534061384200DBiSVP3A3
300534063319660NKEBD2A3
300534062123370DBi SBD 9602