Did something change between cycles 3 and 4 for the OM2-01 IAF runs?
I noticed a substantial “jump” in the deep circulation between 01deg_jra55v140_iaf_cycle3 and 01deg_jra55v140_iaf_cycle4 and I’d like to understand what drove this jump.
If you look at the MOC streamfunctions averaged over each cycle, you can see that the bottom cell extends much further to the north in cycle 4 (4th panel in image below):
Comparing the time series of AABW transport at 40°S (taken as minus the minimum of the streamfunction at 40°S below 1036 kg m⁻³; top panel in image below) shows some change between cycles but nothing suspicious. However, at 20°N (bottom panel), the difference is striking:
Could this is related to the reproducibility issues / bugs about these runs discussed on the Hive and on GitHub?