sanAkel
commented
1 month ago @rgrumbine, following our previous conversations, as agreed, data from the OSTIA system:
- SST
- Sea ice concentration, which is from OSI-SAF
will suffice.
Factoring ⬆️ and the fact that we tend to compare our answers with the ERA5 reanalysis,
- I downloaded ERA5 SST and sea ice concentration, which is essentially OSTIA SST and sea ice concentration respectively, see Sec 6.2 of Hersbach et al., 2019.
- Produced a daily climatology using data from 2007- 2021; as already noted, 18-year version can not be produced until end of 2024.
Anyone who has access to the MSU (orion/hercules) can find climatologies in following paths:
✅ SST: /home/santa/marine/data/era5/clim/e5_SSTK*.nc
✅ Ice concentration: /home/santa/marine/data/era5/ICE/clim/e5_CI*.nc
cc: @NeilBarton-NOAA, @LydiaStefanova-NOAA, @SulagnaRay-NOAA
Note: If someone (outside of the NOAA-EMC) wants to access the ⬆️ mentioned climatologies, contact me.
The current climatology was released in 2013/14 -- TN 322. Robert W. Grumbine: 2014: CFSR 30-Year Sea Ice Concentration Climatology -- making it quite old, especially considering the extraordinary changes in Arctic ice cover from 2007 to present.
Because 2007 was such a discontinuity, the next climatology should start from then. For CPC purposes, it is useful to divide in to terciles of 'above', 'normal', 'below', so a multiple of 3 years should be used. 15 years is 2007-2021, 18 years requires to the end of 2024.