Wire Following Profiler Time Correction:
Irminger 6 Wire-Following Profiler recovered data required a correction to the timestamps in the raw data due to a bug in firmware version 5.34. This bug caused the profiler to record timestamps with year 1940 beginning after the transition from 2019 to 2020. McLane recommends that 80 years be added to the year in all timestamps recorded after 2020-01-01T00:00:00 to correct the timestamp in the raw data (1940 + 80 = 2020).
On 2021-02-05 the raw (binary) data files were converted to ASCII and each timestamp in the raw data was corrected by adding 80 years. These raw data were then repacked into binary *.DAT files as if they had been generated by the WFP. These corrected data were unpacked using the unpacker to confirm the data can be unpacked and had the correct year. These corrected raw data were ingested into the OOI data portal. The original raw data data files with incorrect timestamps were flagged as bad (renamed as the original file name +.bad)
More information about this issue and fix can be found here: Irminger 2019-2020 Profiler data
A write-up and example of this processing code can be found here: GitHub - oceanobservatories/ooicgsn-data-tools: OOI-CGSN tools for data analysis.
Note ACM current meter ceased logging data 1/1/2020. Root cause unknown but likely related to the clock rollover issue. Recovered data were not correctable.
Note that glass spheres in MMP 12774-01 imploded on 5/10/2020 and the WFP data after are suspect or missing.