GDP Weekly Array Status Update



Composition of the Global Drifter Array on 30-Jan-2023:

DBi : 380
Pacif.Gyre: 329
SIO : 135
Metocean: 117
Unknown: 44
NKE : 14
Marlin Yug: 6
TOTAL: 1025



Number of Iridium drifters: 1024

Fraction of array that is Iridium: 99.9 percent

Array size on 23 Jan 2023: 1038 drifters


Added IDs (7):

220829 220846 220848 300234066027240 300534061653410 300534061653510 300534063900080


Lost IDs (20):

300234064873100 300234064876550 300234065257020 300234066438320 300234066532030 300234066838680 300234066892240 300234067113280 300234067878390 300534060352470

300534060520110 300534061388110 300534061392330 300534061491080 300534061498410 300534061702530 300534062021760 300534062363640 300534062364570 300534062383420


Net change: 7 - 20 = -13

New array size on 30 Jan 2023: 1025 drifters.


Death rate: 24.2 deaths per 1250 drifters per 7 days (1264 deaths per 1250 per year).


Mean age of dead drifters: 722 days. Median: 657 days.


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

ID WMO# DepDate DepLat DepLon ShipManufacturer Type Prgm
300534062021760150173526-Jan-2022-21.0-0.8MV HELENA DBi BD2GI 31412
300534061388110320185028-Dec-2021-18.6-111.0MAERSK OLIVIA DBi SVP3GI 31412
300534061392330410262314-May-202135.3-39.0OCEANX - R/V OCSIO SVPGHI 21312
300534061702530510262913-Mar-202126.3-120.0BLUEFIN DBi SVP3GI 21312
300534060520110520169206-Oct-202011.4-167.0BLUEFIN Pacific GyBD2GI 21312
300234066892240620363307-Aug-202057.4-35.2UNKNOWN Metocean BD2GHI 2222
300234066438320620263213-Jul-202052.8-21.5NORTH ABOUT Pacific GyBD2GI 21321
300234066532030410165914-Dec-2019-60.1-12.0LAGARFOSS Pacific GyBD2GI 21321
300234066838680440185912-Oct-20190.0-24.0METEOR Pacific GyBD2GI 21321
300234064876550170154006-Oct-2019-34.5-0.0SA AGULHAS DBi BD2GI 21312
300234065257020170152915-Aug-2019-54.2-35.3SA AGULHAS DBi BD2GI 21312
300234067113280130157319-Mar-201915.5-25.0RONALD BROWN Pacific GySVP3GI 31312
300234064873100340156506-Apr-2018-23.9-84.7STRATUS DBi SVP3GI 21312


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

ID MANUFACTURER TYPE TRANSMISSION
300534062383420DBiBD2A3
300534062363640Pacific GySVP3A3
300534062364570Pacific GySVP3A3
300234067878390Pacific Gyre SBD 9602
300534061491080SIO SBD 9602
300534061498410SIO SBD 9602
300534060352470NKEBD2A3