GDP Weekly Array Status Update



Composition of the Global Drifter Array on 26-Jul-2021:

Pacif.Gyre: 505
DBi : 378
SIO : 265
Metocean: 166
NKE : 58
Unknown: 29
TOTAL: 1401



Number of Iridium drifters: 1397

Fraction of array that is Iridium: 99.7 percent

Array size on 19 Jul 2021: 1395 drifters


Added IDs (32):

132685 60254940 60282860 60283830 60386920 61175480 61177460 61398930 61398950 61398990

61490000 61650080 61651530 61654030 61654080 61654090 61654100 61654120 61654490 61654510

61655030 61655050 65700760 67976540 67977120 67977130 67977230 68248210 68248250 68481030

68482590 68484010


Lost IDs (26):

60520310 60610560 60754060 61182980 63892840 64823070 65582860 65605550 65615430 65708170

66023250 66394370 66410970 66432480 66432900 66433470 66479760 66532050 66712650 66813200

66896200 66979210 67203360 67203940 67549680 68443250


Net change: 32 - 26 = 6

New array size on 26 Jul 2021: 1401 drifters.


Death rate: 23.2 deaths per 1250 drifters per 7 days (1212 deaths per 1250 per year).


Mean age of dead drifters: 638 days. Median: 644 days.


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

ID WMO# DepDate DepLat DepLon ShipManufacturer Type Prgm
61182980640262705-Jul-202179.12.9UNKNOWN DBi BD2GI 31412
67549680620269603-Feb-202139.00.7SOCIB-ICTS DBi BD2GI 21312
68443250230180402-Feb-2021-50.034.4UNKNOWN SIO SVPVHI 21312
66410970220158007-Nov-202025.3122.7UNKNOWN SIO SVPGHI 21312
60520310520169630-Sep-2020-3.0-170.0BLUEFIN Pacific GyBD2GI 21312
60754060510278114-Sep-20203.0-180.0BLUEFIN DBi SVP3GI 21312
66394370440185212-Aug-202053.7-150.0SIR WILFRED LAUMetocean BD2GI 21312
60610560520170414-Jul-202020.8133.7R/V ONNURI Pacific GySVP3GI 21312
66479760170163807-Apr-2020-9.7-12.6MV HELENA DBi BD2GI 21312
66023250560159503-Mar-2020-18.0102.3MV BORKUM DBi BD2GI 21312
66896200620364129-Jan-202045.5-8.0MONGE Metocean BD2GHI 2222
66433470170157622-Jan-2020-53.344.1PHAROS SG Pacific GyBD2GI 21312
66712650310155919-Dec-201915.1-25.7METEOR DBi SVP3GI 21312
66532050410166124-Aug-201961.3-12.0LAGARFOSS Pacific GyBD2GI 21321
65615430640154716-Aug-201967.3-18.8R/V BJARNI SAEMSIO SVPGHI 21312
67203940630167615-Aug-2019-22.040.7BEAUTEMPS-BEAUPNKE BD2GI 2222
67203360550173313-Aug-2019-24.241.9ATALANTE NKE BD2GI 2222
66813200320175328-Jul-201910.9-95.0GOLDEN BEAR DBi SVP3GI 21312
66432480170155924-Jul-2019-55.0-0.5SA AGULHAS Pacific GyBD2GI 21312
66432900170156115-Mar-2019-27.832.7R/V PHAKISA Pacific GyBD2GI 21312
65582860550159615-Feb-2019-64.8147.8R/V INVESTIGATODBi BD2GI 21312
66979210330161025-Oct-2018-46.3-53.4Unknown Metocean BD2GI 2222
64823070340154605-Oct-2018-59.0-63.6LM GOULD Pacific GyBD2GI 21312
65708170210158823-Jul-201845.3155.0WESTWOOD COLUMBPacific GyBD2GI 21312
65605550230159914-Jul-2018-14.3109.0RONALD BROWN Pacific GySVP3GI 21312
63892840210152223-Dec-201638.2144.0WESTWOOD RAINIEDBi BD2GI 21312


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

ID MANUFACTURER TYPE TRANSMISSION