Closed AquaAuma closed 9 months ago
we documented the correlations between reported weights and re-estimated weight from abundance at length in DATRAS surveys to make users aware of this issue in the dataset, but the ICES DATRAS Data team (Vaishav Soni) indicated this was an ongoing issue for which they're working on solutions.
Comparing weights from abundance and length, and reported weights in the datasets. New folder with results on this available: https://github.com/AquaAuma/FishGlob_data/tree/main/QAQC/DATRAS
More work/checks need to be made for surveys for which weights don't match, but abundances do. Most likely due to three aspects (i) quality of length-weight relationships, (ii) units/values of lengths in the datasets, (iii) units of reported weight at the haul level, as was noted as an issue by DATRAS https://www.ices.dk/data/data-portals/Pages/DATRAS-News-and-updates.aspx
(iii) does not affect the current dataset, because we did not use the reported weights, but the re-calculated ones