Direct Covariance Flux

Reference Designator
Start Depth
End Depth
Buoy Tower
Current Status
FDCHP (Direct Covariance Flux)
Science Discipline
M2M Example
Method Data Stream Content Type
recovered_host fdchp_a_dcl_instrument_recovered Data Products Report M2M Stats Science
recovered_inst fdchp_a_instrument_recovered Data Products Report M2M Stats Science
telemetered fdchp_a_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 OC1503D 04/02/2015 09/22/2015 CGMCE-02SHSM-00001 CGINS-FDCHPA-00012 44.6383 -124.304 -5 80
3 Review TN-342 05/17/2016 09/28/2016 CGMCE-02SHSM-00003 CGINS-FDCHPA-00017 44.6357 -124.304 -5 80
4 Review AT37-03 09/26/2016 04/22/2017 CGMCE-02SHSM-00004 CGINS-FDCHPA-00012 44.6393 -124.304 -5 80
5 Review SKQ201704S 04/20/2017 10/15/2017 CGMCE-02SHSM-00005 CGINS-FDCHPA-00017 44.6358 -124.304 -5 81
6 Review SKQ201715S 10/10/2017 04/04/2018 CGMCE-02SHSM-00006 CGINS-FDCHPA-00024 44.6393 -124.304 -5 80
7 Review SKQ201808S 04/03/2018 09/25/2018 CGMCE-02SHSM-00007 CGINS-FDCHPA-00024 44.6357 -124.304 -5 80
8 Review SR1813 09/22/2018 CGMCE-02SHSM-00008 CGINS-FDCHPA-00012 44.6395 -124.301 -5 80

No notes yet.

New Note

Metadata Start Date End Date Comment
Method: recovered_inst
Stream: fdchp_a_instrument_recovered
4/2/15, 4:15 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: 1398 By: lgarzio

4/2/15, 5:00 PM 9/27/16, 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: 77 By: lgarzio

Method: telemetered
Stream: fdchp_a_dcl_instrument
4/2/15, 5:20 PM

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. * 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

Id: 1373 By: wingardc
Flag: fail Exclude: No