Dissolved oxygen

[hrsdawson]

Could use WOA climatologies: https://www.ncei.noaa.gov/access/world-ocean-atlas-2018/bin/woa18oxnu.pl?parameter=o

[adele-morrison]

Note that oxygen was re-initialised in 1979.

[adele-morrison]

More from Laurie:

Dissolved O2 (umol/kg) compared to GLODAPv2 (2016), zonally averaged over the Indo-Pacific and Atlantic basins. The data has been averaged over years 1990-2010. O2 is well simulated. It is however interesting to note the high simulated O2 level south of 70S, associated with DSW/AABW formation. This is not apparent in the GLODAP data, but maybe it is in the WOA?? I have not checked the difference between GLODAP and WOA for O2.

[wghuneke]

Monthly nitrate, phosphate, and dissolved oxygen from WOA18 interpolated onto the ACCESSOM2-01 grid (horiz+vert) are now under /g/data/ik11/observations/woa18_bgc/woa18_bgc_10/.

[hrsdawson]

@wghuneke I think there could be something funny going on with the interpolated WOA18 oxygen fields (and possibly nitrate/phosphate too). This is the zonal mean across the Atlantic sector of the Southern Ocean for August and November. The bathymetry near Antarctica is missing and there seems to be some unusual vertical artefacts. Does it look like this for you too?

For context, I think it should look more like this (at least the bathymetry). I'm replacing the 0. values with NaN before taking the zonal mean but it still ends up looking like above.

[wghuneke]

The WOA data are only available for the upper 800 m (oxygen, nitrate) and 1500 m (oxygen). The vertical interpolation went all the way to the bottom. I fixed that (cut the datasets at the respective depth value) and set land values from zero to nan.

Let me know if there are still issues. The files have a slightly different name, I skipped the "deg" part at the end.