Spectrophotometer

Reference Designator
GS01SUMO-SBD12-01-OPTAAD000
Review Status
Review Complete
Note
The OPTAA data were run through the automated QC tests, but were not reviewed visually. Plots are provided in the “Review Images” section only for wavelengths on/near 676nm (if the wavelengths are defined in the .nc files).
Depth
1m
Class
OPTAA (Absorption Spectrophotometer)
Make / Model
WET Labs / AC-S

Dataset Reviews Last processed: 6/26/19, 5:33 PM

QC Check Info
Dep. Preferred Method Stream DD FD SG EG Gaps GD TS Rate (s) Pressure Comp. Time Order Valid Data Missing Data Data Comp. Missing Coords. Review
1 recovered_host 313 268 0 0 3 48 1,128,729 1 / 1 2 Complete
2 recovered_host 365 365 0 0 0 0 1,451,849 1 / 1 2 Complete
Data Ranges Review Images

Test Notes

  1. pass unique test - ascending not tested
  2. no comparison: timestamps do not match

Data Coverage

Deployment: 12
86%100%

Lat/Lon Differences (km)

Deployment: 12
1 0.00
2 9.790.00

System Annotations

Metadata Start Date End Date Comment
GS01SUMO-SBD12-01-OPTAAD000
Stream: optaa_dj_dcl_instrument
2/18/15, 4:06 PM

Per vendor feedback, the first 1-2 min of each AC-S instrument sampling period should be considered suspect. Signal drift can occur as the instrument warms up, flushes with seawater, and the filter wheel spins up.

Id: 1803 By: swhite

GS01SUMO-SBD12-01-OPTAAD000
Stream: optaa_dj_dcl_instrument_recovered
2/18/15, 4:06 PM

Per vendor feedback, the first 1-2 min of each AC-S instrument sampling period should be considered suspect. Signal drift can occur as the instrument warms up, flushes with seawater, and the filter wheel spins up.

Id: 1804 By: swhite

GS01SUMO-SBD12
12/13/15, 7:00 PM 12/11/16, 7:00 PM

Upon recovery of deployment 2, damage to some components of the surface buoy were noted (e.g., FDCHP was bent, the tops of the METBK-PRC and FleetBroadBand antenna were missing).

Id: 95 By: lgarzio

GS01SUMO
12/8/17, 7:00 PM 12/8/18, 11:42 PM

Deployment 3: *UPDATED 2020-04-28: This mooring was recovered 2018-12-09 which was a year later than originally intended. Some instruments were able to continue sampling for the extended deployment.* Recovery of the mooring was planned during the NBP 17-09 cruise (Nov - Dec 2017) but not completed due to adverse weather conditions. Recovery options are pending. Instruments that are still operational are likely reaching (or have surpassed) their deployment lifespan.

Id: 834 By: lgarzio

GS01SUMO-SBD12-01-OPTAAD000
12/4/18, 12:10 PM 12/9/18, 11:42 AM

Deployment 4: Due to instrument issues prior to deployment this instrument was not deployed on GS01SUMO-00004.

Id: 2049 By: swhite

Review Notes

Metadata Start Date End Date Comment
GS01SUMO-SBD12-01-OPTAAD000

According to Roesler and Barnard (Optical proxy for phytoplankton biomass in the absence of photophysiology: Rethinking the absorption line height, Methods in Oceanography, 2013), “absorption meters are highly prone to biofouling, particularly biofilms which not only attenuate the collimated beam but also impact the scattering properties of the optical surfaces and tubes. In productive coastal waters biofouling can have significant impacts (i.e. 10% of the signal) within one to two weeks”.

By Lori Garzio, on 6/28/19

GS01SUMO-SBD12-01-OPTAAD000
Deployment: 1

22% of the beam_attenuation values and 31% of optical_absorption values for this deployment are either fill values, outside of global ranges, or outliers (+/- 5 SD).

By Lori Garzio, on 6/28/19

GS01SUMO-SBD12-01-OPTAAD000
Deployment: 2

53% of optical_absorption values for this deployment are either fill nans, outside of global ranges, or outliers (+/- 5 SD).

By Lori Garzio, on 6/28/19

GS01SUMO
Deployment: 3

Annotation ID 834 needs to be updated: "Deployment 3: Recovery of the mooring was planned during the NBP 17-09 cruise (Nov - Dec 2017) but not completed due to adverse weather conditions. Recovery options are pending. Instruments that are still operational are likely reaching (or have surpassed) their deployment lifespan."

By Lori Garzio, on 1/14/19

New Note