#Yedoma

Based on 135 (!) 14C and four luminescence ages we show that the Upper Ice Complex as local #Yedoma equivalent is is older than expected. We suggest that its formation began after #permafrost degradation at the end of the Last Interglacial (MIS 5e).

Upland Yedoma taliks are an unpredicted source of atmospheric methane - Nature Communications Contrary to current model predictions, this study shows that rapid permafrost thaw in well drained uplands leads to exceedingly high methane emissions ( ~ 10-60 times higher than expected) from deeply...

Also a highly relevant paper from 2024: we have underestimated the methane emissions form #Yedoma permafrost taliks:

We talk here about significant numbers...

#Arctic #uöäü1methane

Original post on mastodon.social

Yedoma (Pedology 🟤)

Yedoma is an organic-rich Pleistocene-age permafrost with ice content of 50–90% by volume. Yedoma are abundant in the cold regions of eastern Siberia, such as northern Yakutia, as well as in Alaska and the Yukon.

https://en.wikipedia.org/wiki/Yedoma

#Yedoma #Pedology […]