Dissolved Oxygen

Reference Designator
Start Depth
End Depth
Wire Following Profiler Body
Current Status
Review Complete
DOSTA (Dissolved Oxygen Stable Response)
Science Discipline
Optode 4330
M2M Example
Method Data Stream Content Type
recovered_wfp dosta_ln_wfp_instrument_recovered Data Products Report M2M Stats Science
telemetered dosta_ln_wfp_instrument Data Products Report M2M Stats Science
Deployment Cruise Start Date Stop Date Mooring Asset Node Asset Sensor Asset Latitude Longitude Deployment Depth Water Depth
1 Review KN221-04 09/11/2014 08/16/2015 CGMGI-02HYPM-00001 CGVEH-GWFPGX-10401 CGINS-DOSTAL-01476 59.9753 -39.4818 2592 2678
2 Review AT30-01 08/16/2015 07/16/2016 CGMGI-02HYPM-00002 CGVEH-GWFPGX-77401 CGINS-DOSTAL-01106 59.9727 -39.5248 2592 2667
3 Review AR7-01 07/11/2016 08/10/2017 CGMGI-02HYPM-00003 CGVEH-GWFPGX-10401 CGINS-DOSTAL-01476 59.9695 -39.4886 2573 2673
4 Review AR21 08/06/2017 06/16/2018 CGMGI-02HYPM-00004 CGVEH-GWFPGX-77401 CGINS-DOSTAL-01106 59.9733 -39.9256 2560 2659
5 Review AR30-03 06/09/2018 08/10/2019 CGMGI-02HYPM-00005 CGVEH-GWFPGX-10401 CGINS-DOSTAL-01476 59.9697 -39.49 2560 2669
6 Review AR35-05 08/06/2019 CGMGI-02HYPM-00006 CGVEH-GWFPGX-77401 CGINS-DOSTAL-01106 59.9729 -39.5308 2560 2664
Metadata Start Date End Date Comment

Missing data at the end of deployment 4 should be annotated.

By Lori Garzio, on 8/5/19


I submitted a helpdesk question on 11/12/2018 regarding an offset between recovered and telemetered data for all global HYPMs: "There appears to be a substantial offset between data with the same timestamps from recovered_wfp and telemetered methods for all deployments of all global WFP CTDs, and I have included information from two representative deployments of two different profilers as examples. It looks like the values recorded for the first common timestamp are exactly the same, and as the profiler moves along in time the offset between the values recorded for the same timestamp become increasingly more offset. Then, the profiler reaches the end of the profile (either at its shallowest or deepest point), resets, and the pattern begins again. This is most easily seen in the pressure data, but there is an offset for all science parameters.

GI02HYPM-WFP02-04-CTDPFL000 deployment 1
GP02HYPM-WFP02-04-CTDPFL000 deployment 3

The *_intersect.csv files attached contain data where recovered and telemetered timestamps intersect. For each timestamp and science parameter there are recorded values (from .nc files downloaded from the system) and the difference. For each parameter, the difference between the values at the bottom and top of the profiler's range are exactly zero, and (particularly for pressure) the differences steadily increase until they are reset at zero at the bottom/top of the profile. This pattern continues throughout the deployment. The plots attached are zoomed in to one upcast and one downcast, and highlight the offset in the data between the two methods."

Redmine 13743

By Lori Garzio, on 8/5/19


The estimated_oxygen_concentration ranges shifted from around 300-360 umol L-1 in deployments 1-2 to 320-380 umol L-1 in deployments 3-4. A similar shift in DO data from GP02HYPM-WFP03-03-DOSTAL000 was observed between deployments 3 and 4 (see annotation ID 1444)

By Lori Garzio, on 8/5/19

New Note

Metadata Start Date End Date Comment
6/28/16, 2:10 AM 7/15/16, 8:00 PM

Deployment 2: Profiler failed.

Id: 119 By: lgarzio
Flag: not_operational Exclude: No

7/12/17, 3:30 AM 8/10/17, 6:18 AM

Deployment 3: Profiler failed.

Id: 120 By: lgarzio
Flag: not_operational Exclude: No

12/31/19, 7:00 PM

Deployment 6: Due to a clock rollover issue, all WFPs have ceased sampling on 1/1/2020. No WFP data are being collected after this date. A resolution is being researched by the vendor.

Id: 1888 By: cdobson