This dataset consists of around 80,000 color and IR (thermal) images, associated with flights conducted in Alaska by the NOAA Alaska Fisheries Science Center in 2019. Images have been annotated with around 28,000 bounding boxes (14,000 on color images, 14,000 on thermal images) on ice seals.

The top five maximum ages encountered by the AFSC Age and Growth Program for collections aged between 1990 and 2020 except Pacific cod, which is limited to collections read after 2000.

Maximum age data is from ages generated between 1990 and 2020 except Pacific cod, which is limited to collections read after 2000.

Natural mortality (M) is estimated using the method outlined by Hoenig (1983) which uses maximum age to estimate instantaneous mortality.

Experimental apparent optical properties data product for the eastern Bering Sea

Description:
This zip file contains a sample of an experimental apparent optical properties data product for the eastern Bering Sea, derived from light measurements collected during a 2004 bottom-trawl survey conducted by NMFS/NOAA. The full experimental data product includes

For additional years of data (2004–2019), contact Sean K. Rohan .

A description of fields in the experimental data product and methods used to derive the data product are provided in the references below.

References:
Rohan, S. 2020. trawllight: derive apparent optical properties from trawl-mounted light sensors. doi: 10.5281/zenodo.2567237.
Rohan, S., Kotwicki, S., Britt, L., Laman, E., Aydin, K. In prep. Deriving apparent optical properties from light measurements obtained using bottom-trawl-mounted archival tags. NOAA Technical Memorandum. AFSC-XX-XX