Dissolved Oxygen

Reference Designator
CE06ISSM-MFD37-03-DOSTAD000
Start Depth
29
End Depth
29
Location
Multi-Function Node
Current Status
Review Complete
Class
DOSTA (Dissolved Oxygen Stable Response)
Series
DOSTA-D
Science Discipline
Chemical
Make
Aanderaa
Model
Optode 4831
M2M Example
https://ooinet.oceanobservatories.org/api/m2m/12576/sensor/inv/CE06ISSM/MFD37/03-DOSTAD000/metadata
Method Data Stream Content Type
recovered_host dosta_abcdjm_ctdbp_dcl_instrument_recovered Data Products Report M2M Stats Science
recovered_inst dosta_abcdjm_ctdbp_instrument_recovered Data Products Report M2M Stats Science
telemetered dosta_abcdjm_ctdbp_dcl_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 OC1410A 10/07/2014 04/10/2015 CGMCE-06ISSM-00001 CGINS-DOSTAD-00221 47.1334 -124.268 30 30
2 Review OC1503D 04/10/2015 10/13/2015 CGMCE-06ISSM-00002 CGINS-DOSTAD-00313 47.1311 -124.272 29 29
3 Review OC1510A 10/13/2015 05/06/2016 CGMCE-06ISSM-00003 CGINS-DOSTAD-00484 47.1333 -124.271 29 29
4 Review TN-342 05/06/2016 09/24/2016 CGMCE-06ISSM-00004 CGINS-DOSTAD-00135 47.135 -124.273 29 29
5 Review AT37-03 09/27/2016 04/15/2017 CGMCE-06ISSM-00005 CGINS-DOSTAD-00483 47.1336 -124.272 29 29
6 Review SKQ201704S 04/13/2017 10/05/2017 CGMCE-06ISSM-00006 CGINS-DOSTAD-00313 47.1341 -124.272 29 29
7 Review SKQ201715S 10/05/2017 03/28/2018 CGMCE-06ISSM-00007 CGINS-DOSTAD-00479 47.1346 -124.272 29 29
8 Review SKQ201808S 03/28/2018 09/20/2018 CGMCE-06ISSM-00008 CGINS-DOSTAD-00134 47.1336 -124.269 29 29
9 Review SR1813 09/24/2018 04/25/2019 CGMCE-06ISSM-00009 CGINS-DOSTAD-00483 47.1348 -124.271 29 29
10 Review SKQ201910S 04/25/2019 10/12/2019 CGMCE-06ISSM-00010 CGINS-DOSTAD-00136 47.1347 -124.271 29 29
11 Review SKQ201921S 10/12/2019 CGMCE-06ISSM-00011 CGINS-DOSTAD-00291 47.1344 -124.271 29 29
Metadata Start Date End Date Comment
CE06ISSM-MFD37-03-DOSTAD000
10/1/15, 12:00 AM 10/31/15, 12:00 AM

The DO values at the end of deployment 2 are around 150 umol kg-1 and jump to ~225 umol kg-1 at the beginning of deployment 3. Further analysis should be done using shipboard bottle data, which is outside the scope of this project.

By Lori Garzio, on 4/1/19

CE06ISSM-MFD37-03-DOSTAD000
4/15/16, 12:00 AM 5/31/16, 12:00 AM

The DO values at the end of deployment 3 are around 75 umol kg-1 and jump to ~200 umol kg-1 at the beginning of deployment 4. Further analysis should be done using shipboard bottle data, which is outside the scope of this project.

By Lori Garzio, on 4/1/19

CE06ISSM-MFD37-03-DOSTAD000
3/1/18, 12:00 AM 4/15/18, 12:00 AM

The DO values at the end of deployment 7 are <50 umol kg-1 and jump to ~200 umol kg-1 at the beginning of deployment 8. Further analysis should be done using shipboard bottle data, which is outside the scope of this project.

By Lori Garzio, on 4/1/19

CE06ISSM-MFD37-03-DOSTAD000
Deployment: 1
1/8/15, 8:00 PM 4/10/15, 12:00 AM

The data gap at the end of deployment 1 should be annotated.

By Lori Garzio, on 4/1/19

CE06ISSM-MFD37-03-DOSTAD000
Deployment: 5

43 days of data in the middle of the deployment are missing from the recovered_inst data stream, but available in the recovered_host and telemetered data streams. These data should be available in the recovered_inst data stream (or annotated if there was an issue with internally recording data).

By Lori Garzio, on 4/1/19

CE06ISSM-MFD37-03-DOSTAD000
Deployment: 6

39 days of data at the end of the deployment are missing from the recovered_inst data stream, but available in the recovered_host and telemetered data streams. These data should be available in the recovered_inst data stream (or annotated if there was an issue with internally recording data).

By Lori Garzio, on 4/1/19

CE06ISSM-MFD37-03-DOSTAD000
Deployment: 8

Deployment 8 recovered_inst data should be available for download (the raw data file is available according to the ingest csv) or annotated to indicate why recovered_inst data are not available.

By Lori Garzio, on 4/1/19

New Note

Metadata Start Date End Date Comment
CE06ISSM-MFD37-03-DOSTAD000
10/7/14, 3:45 PM 3/28/18, 12:14 PM

Prior to the use of UV lamps for biofouling mitigation, this sensor would routinely biofoul after the first 6-8 weeks of a deployment (more common during a spring/summer deployment). Users should carefully examine the data to determine if biofouling has begun to dominate the signal.

Id: 2129 By: wingardc
Flag: suspect Exclude: No

CE06ISSM
10/7/14, 3:45 PM 9/30/16, 8:00 PM

All of the inshore surface moorings suffer from an issue called the 'top of the day problem.' A race condition exists in the CPM firmware when transferring daily log files harvested from the various sub-components in a buoy system (e.g. DCL16, CPM3, DCL35, etc) over the Iridium RUDICS connection. The primary CPM rsync's data files from the various sub-components to a central data directory. The first time a daily file is created/copied into that directory (usually shortly after midnight), a compressed copy of the file is created and that compressed file is queued up in a separate text file for transmission to shore. The transfer routine reads that text file and processes the files from that list in order from top to bottom. Once that compressed file is transferred to shore, no further updates for that file are sent to shore. Meanwhile, the CPM continues to rsync data from the different sub-components, updating the original daily log file. The net result is that data is accumulating in the daily log file for an instrument, but we may see only one record (or none) depending on when the rsync job occurred and the compressed file was created and staged for transfer to shore. This affects telemetered data only.

Id: 897 By: michaesm

CE06ISSM
7/26/16, 8:00 PM 10/3/16, 8:00 PM

Correcting the iridium data telemetry issues, permitting full telemetry of data files, resulting in greater power consumption than anticipated. Result is power level of the battery pack has dropped below operational limits and subsystems can no longer power instruments. Shutting the mooring down, and placing in a low power maintenance mode. 11 instruments offline.

Id: 898 By: michaesm
Flag: not_operational Exclude: No

CE06ISSM
12/31/16, 7:00 PM 4/22/17, 8:00 PM

The buoy main battery voltage is being drawn down faster than expected. Have shutdown further power to DCL17 and to the OPTAA on DCL16. This takes the following instruments offline:
DCL17
MOPAK
CTDBP (with attached FLORT)
VELPT
ACOMM
OPTAA
Have had to power off DCL17 and DCL16 and reduce call in frequency to 12 hours. Will still (at least should) receive data from MFN. Instruments affected are:
DCL17 (Buoy)
MOPAK
CTDBP3 (with FLORT)
VELPT1
UCSPP (aka ACOMM)
DCL16 (NSIF)
CTDBP1 (with DOSTA) (should internally log)
FLORT
PCO2W1 (should internally log)
PHSEN1 (should internally log)
OPTAA1
NUTNR (should internally log)
SPKIR
VELPT2 (should internally log)

Id: 899 By: michaesm

CE06ISSM
10/2/17, 8:00 PM 3/2/18, 3:44 AM

CAMDS not serviced by vendor in time for deployment

Id: 1236 By: michaesm
Flag: not_operational Exclude: No

CE06ISSM-MFD37-03-DOSTAD000
Method: telemetered
Stream: dosta_abcdjm_ctdbp_dcl_instrument
10/5/17, 7:35 PM 1/19/18, 3:30 AM

Due to a calibration error, this instrument reported oxygen levels that could be as much as 4.2% too low. Statement from the manufacturer: "A recent routine control check of the O2 reference sensors, used for multipoint calibration of oxygen Optodes, revealed a deviation with respect to accuracy. The revealed deviation in the reference sensors is a 2.7% linear loss (percent of reading) in response to oxygen which means that these optodes will report oxygen levels that could be as much as 4.2% too low (deviation in slope). The 2.7% deviation is in excess of the specified MPC accuracy of ±1.5%."

Id: 216 By: michaesm
Flag: fail Exclude: No

CE06ISSM-MFD37-03-DOSTAD000
3/28/18, 12:14 PM

The use of UV lamps has been implemented for biofouling mitigation on this instrument as of 2018-03-28T16:14:00Z.

Id: 2115 By: wingardc

CE06ISSM-MFD37-03-DOSTAD000
6/13/19, 8:00 PM 10/12/19, 4:18 PM

UPDATED, 2019-10-12: Upon recovery, confirmed that the sensor was biofouled. Data from June 14th through the end of the deployment should not be used. *Beginning around June 14th, the dissolved oxygen data near the bottom declined to approximately -4 umol/L by June 28th, where it has remained since. Data from a co-located profiler system and the Near Surface Instrument Frame indicates a low oxygen event occurred beginning in the same time frame, with full ventilation of the water column occurring around July 5-6. Sometime during this time frame, this instrument appears to have either failed, been damaged or biofouled to the point where the data is no longer considered useable.

Id: 1630 By: wingardc
Flag: fail Exclude: No

CE06ISSM-MFD37
Method: telemetered
10/17/19, 12:45 AM 5/23/20, 8:00 PM

Updated, 2020-05-24: Between 2019-10-17 and 2020-05-24, the clock on CPM3 was off by approximately 27 minutes. Communications between the buoy and the MFN were out of sync during this time period. The clock was automatically updated during routine operations on May 24, 2020 to the correct time, allowing communications and normal operations on the MFN to resume. *Communications to the seafloor sensors failed. Status of the instrumentation and data loggers is unknown. With the exception of the VEL3D and OPTAA, the sensors on the seafloor platform should continue to autonomously sample for the remainder of deployment. Until we recover and redeploy the mooring in the spring of 2020, no further telemetered data will be available from the seafloor sensors.

Id: 1759 By: wingardc
Flag: not_available Exclude: No