Stepwise Cooling Events in the Western Arctic at 8.2 and 4.2 ka: Proxy Development and Application RI-OH’ index is established as a reliable proxy for the reconstruction of sea surface temperature (SST) in the western Arctic Ocean RI-OH’-SST stepwise cooling in the northern Chukchi Sea at 9.1–...

K. Suzuki et al. have just given another win for oceanic paleothermometry based on archaeal hydroxylated tetraether lipids—OH-isoGDGTs—which they developed and applied in the western Arctic Ocean and the Bering Sea:
doi.org/10.1029/2025...
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