A comparison of Holocene temperature reconstructions from vegetation proxies and brGDGTs in northern Fennoscandia Studies on Holocene climate conditions commonly show discrepancies between different proxy-based reconstructions, calling for in-depth analysis of bot…

📢New publication co-lead by our PhD students
@helsinki.fi @geohelsinkiuni.bsky.social diving into multi-proxy temperature reconstructions for the Holocene in N-Fennoscandia using #pollen, #macrofossils & #GDGT: www.sciencedirect.com/science/arti...
@bolincentre.bsky.social @utmpaleolab.bsky.social 🧪

@michaelfanone.bsky.social we might need to schedule some #GDGT with Ben. A former cop & a lawyer doing good trouble on a few lawn chairs- cheers to that.

But #archaea live throughout the water columns! So, what happens if #GDGT from deep Archaea mixed in the #sedimentary GDGTs...

Taylor et al. 2013 have shown that increased inputs from deep archaeal clades can be detected by the ratio of GDGTs with 2 and 3 rings (GDGT-2/-3).

(4/10)

Let's start with #GDGTs & #TEX86.

#Archaea adjust the internal structures of their membrane lipids (aka #GDGT) to thrive in a wide range of temp. Marine archaea make #GDGT w/ 0-4 cyclopentyl rings. Hotter?! Let's add more rings! This is the basis of #TEX86 #SST proxy.

(3/10)

Exciting in @SoilBiolBiochem
Mineral-bound #lipids in #soils and sediments: the importance of microbial pathways
doi.org/10.1016/j.so...
Tracing SOM sources by lipid #biomarkers

50-day Free: authors.elsevier.com/c/1lHoe8g13f...

#SoilOrganicMatter #MicrobialNecromass #archaea #soilbacteria #GDGT

Late Cenozoic sea-surface-temperature evolution of the South Atlantic Ocean Abstract. At present, a strong latitudinal sea-surface-temperature (SST) gradient of ∼ 16 ∘C exists across the Southern Ocean, maintained by the Antarctic Circumpolar Current (ACC) and a set of comple...

We generated new palynological records from marine sediment cores from the South Atlantic; #IcebergAlley IODP Site U1536, ODP Site 696 and piston cores from Maurice Ewing Bank, paired with our #GDGT SST records from the same Sites (Hoem et al., doi.org/10.5194/cp-1...)

Remember that we have a Starter Pack for researchers who work(ed) with molecules, such as leaf wax, algal, archaeal, and bacterial lipids and pyrogenic compounds.

Featuring but not restricted to #GDGT lovers, #PaleoSky people, geologists ⚒️, and/or (pale)oceanographers 🌊

go.bsky.app/RC38uDF

As a #GDGT lover, I must make this post appear in a few relevant Bluesky feeds! 🧪 ⚒️

Truly, this piece of work is important for #PaleoSky researchers who intend to apply OH-GDGT-based paleothermometers in polar oceans in the future! 👇🏻

Thanks a lot to the in person #EGU24 goers who have seen my #brGDGT poster!

Remember that I also have a solicited oral presentation today at 16:15 CEST! Not a #GDGT oriented talk, but the summarized piece of work is great news for OH-isoGDGT-based paleothermometry!

🧪 ⚒️ 👩‍🔬

EGU24-18355 abstract QR code

I also co-author the oral presentation by Petter Hällberg et al.* for the CL5.4 session (again!). Here, it is my recent contribution to the #levoglucosan rather than #GDGT literature that granted me this collaboration!

*With @freddyschenk.bsky.social and @smittenberg.bsky.social

#EGU24 (5/5)

⚒️ 🧪

Follow me on gdgt: http://user.gdgt.com/SirChaos/ #gdgt

Follow me on gdgt: http://user.gdgt.com/SirChaos/ #gdgt

Follow me on gdgt: http://user.gdgt.com/synical/ #gdgt

Follow me on gdgt: http://user.gdgt.com/synical/ #gdgt

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Veronica nicely explains GDGT.com, but other then gadget reviews, I don't really see the point of the site, yet. http://is.gd/1lfYT #gdgt