Direct Covariance Flux

Reference Designator
CP01CNSM-SBD12-08-FDCHPA000
Review Status
Review Complete
Note
Only recovered_inst data were downloaded and analyzed due to issues with calculating telemetered data (see annotations).
Depth
-3m
Class
FDCHP (Direct Covariance Flux)
Make / Model
WHOI / DCFS

Dataset Reviews Last processed:

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
2 recovered_inst / Complete
3 recovered_inst 170 170 0 0 0 0 48,740,209 -3 / 1 2 2 Complete
4 recovered_inst / Complete
5 recovered_inst 154 154 0 0 0 0 42,334,793 -3 / 1 2 2 Complete
6 recovered_inst 240 240 0 0 0 0 68,763,382 -3 / 1 2 2 Complete
7 recovered_inst 146 146 0 0 0 0 41,845,663 -3 / 1 2 2 Complete
8 recovered_inst 152 152 0 0 0 0 43,551,884 -3 / 1 2 2 Complete
Data Ranges Review Images

Test Notes

  1. pass unique test - ascending not tested
  2. no other streams for comparison

Data Coverage

Deployment: 2345678
100%100%100%100%100%

Lat/Lon Differences (km)

Deployment: 2345678
3 0.00
5 0.020.00
6 0.970.990.00
7 0.050.070.950.00
8 0.960.980.020.940.00

System Annotations

Metadata Start Date End Date Comment
CP01CNSM
2/16/14, 7:00 PM 4/17/14, 8:00 PM

Surface buoy exploded due to hydrogen build-up in well.

Id: 103 By: swhite
Flag: not_operational Exclude: No

CP01CNSM-SBD12-08-FDCHPA000
12/13/14, 1:47 PM 10/12/16, 8:00 PM

Sonic temperature bugs: general slow response problem leading to errors of +/- 6 degrees from ambient, and an additional nonlinear error in the slow response when the ambient temperature is between -5 and 5 degrees. The fast response (> 1 Hz) of these sensors is still accurate. Therefore, flux measurements using the detrended temperature data should still be valid. w bug: positive vertical velocities w output by the anemometer need to be multiplied by 1.166; negative vertical velocities need to be multiplied by 1.289 (Redmine 11645)

Id: 80 By: lgarzio
Flag: suspect Exclude: No

CP01CNSM-SBD12-08-FDCHPA000
Method: telemetered
Stream: fdchp_a_dcl_instrument
12/13/14, 1:47 PM 9/26/19, 1:15 PM

UPDATED, 2019-11-07: Per communication with the instrument subject matter expert, the onboard processing error applies only to the motion-corrected wind speed and flux calculations. Those parameters are marked here with a QC Flag = "fail". All other measurements are considered to be good. Users should only use the motion-corrected wind speed and flux data from the recovered instrument data stream. * The telemetered FDCHP data contains an onboard processing error that makes the motion-corrected wind speed and flux data unusable. The instrument subject matter expert is being consulted, and the algorithms are under review. Only the processed, recovered data should be used. For further questions please email help@oceanobservatories.org.

Id: 1374 By: swhite
Flag: fail Exclude: No

CP01CNSM
12/13/14, 1:47 PM 12/15/14, 3:58 PM

Deployment 2: Short deployment due to the fuel cell not functioning correctly. No data expected.

Id: 709 By: cdobson

CP01CNSM-SBD12-08-FDCHPA000
Method: recovered_inst
Stream: fdchp_a_instrument_recovered
5/7/15, 1:34 PM

There are errors in the calculations of the recovered_instrument L1 and L2 data products (motion-corrected wind speeds, sonic temperature, and flux data products). This issue is under investigation (Redmine 13402).

Id: 1397 By: lgarzio

CP01CNSM-SBD12-08-FDCHPA000
10/23/15, 2:49 PM 4/4/16, 8:03 AM

Recovered data are missing.

Id: 544 By: leila

CP01CNSM-SBD12-08-FDCHPA000
10/23/15, 2:49 PM 5/12/16, 8:00 PM

Anemometer broken during deployment.

Id: 596 By: leila

CP01CNSM-SBD12-08-FDCHPA000
10/29/17, 10:15 AM 3/29/18, 3:37 PM

Deployment 8: Sonic temperature bugs: general slow response problem leading to errors of +/- 6 degrees from ambient, and an additional nonlinear error in the slow response when the ambient temperature is between -5 and 5 degrees. The fast response (> 1 Hz) of these sensors is still accurate. Therefore, flux measurements using the detrended temperature data should still be valid. w bug: positive vertical velocities w output by the anemometer need to be multiplied by 1.166; negative vertical velocities need to be multiplied by 1.289 (Redmine 11645)

Id: 2008 By: swhite
Flag: suspect Exclude: No

CP01CNSM-SBD12
4/23/18, 1:22 PM 10/29/18, 9:48 PM

Deployent 9: Power down - Instrument Disabled. No telemetered or recovered data expected for this time period.

Id: 1378 By: leila
Flag: not_operational Exclude: No

CP01CNSM-SBD12-08-FDCHPA000
10/29/18, 9:48 PM 4/7/19, 2:08 PM

Deployment 10: Sonic temperature bugs: general slow response problem leading to errors of +/- 6 degrees from ambient, and an additional nonlinear error in the slow response when the ambient temperature is between -5 and 5 degrees. The fast response (> 1 Hz) of these sensors is still accurate. Therefore, flux measurements using the detrended temperature data should still be valid. w bug: positive vertical velocities w output by the anemometer need to be multiplied by 1.166; negative vertical velocities need to be multiplied by 1.289 (Redmine 11645)

Id: 2009 By: swhite
Flag: suspect Exclude: No

CP01CNSM-SBD12-08-FDCHPA000
4/25/19, 8:00 PM 9/26/19, 1:15 PM

Deployment 11: Analysis of recovered instrument data shows that this instrument failed to initiaize beginning 2019-04-26. No telmetered or recovered data are available after this date for this deployment.

Id: 2010 By: cdobson
Flag: not_operational Exclude: No

Review Notes

Metadata Start Date End Date Comment
CP01CNSM-SBD12-08-FDCHPA000

Re annotation ID 1374 for this instrument - the equivalent annotation on CE02SHSM-SBD12-08-FDCHPA000 (ID 1373) was updated by wingardc: "UPDATED, 2019-02-05: Per communication with the instrument subject matter expert, the onboard processing error applies only to the motion-corrected wind speed and flux calculations. Those parameters are marked here with a QC Flag = "fail". All other measurements are considered to be good. Users should only use the motion-corrected wind speed and flux data from the recovered instrument data stream." This information presumably also applies to this instrument and should be communicated to users.

By Lori Garzio, on 6/7/19

CP01CNSM-SBD12-08-FDCHPA000

There are no global ranges in the system for this instrument for fdchp_a_fluxhot, fdchp_a_fluxmom_alongwind, and fdchp_a_fluxmom_crosswind

By Lori Garzio, on 6/7/19

CP01CNSM-SBD12-08-FDCHPA000

Data arrays are all fill values for every deployment for fdchp_a_tmpatur, fdchp_a_windtur_north, fdchp_a_windtur_up, fdchp_a_windtur_west, fdchp_a_fluxhot, fdchp_a_fluxmom_alongwind, fdchp_a_fluxmom_crosswind (Redmine 13402). There are several errors listed in the computed_provenance section of the provenance.json files (one example file attached). When this issue is resolved annotation ID 1397 should be updated.

By Lori Garzio, on 6/7/19

CP01CNSM
Deployment: 2

Annotation ID 709 "Short deployment due to the fuel cell not functioning correctly" should be updated to indicate that this refers to deployment 2, and data aren't expected from most instruments for this time period.

By Lori Garzio, on 3/22/19

CP01CNSM-SBD12-08-FDCHPA000
Deployment: 4

Annotation ID 544: recovered data are missing. These data should be available for download or the annotation should be updated to explain why the data aren't available.

By Lori Garzio, on 6/7/19

New Note