[coccoliths] NANNOTALK 2 - Sam Phelps 14:00 UTC

[Baptiste Suchéras-Marx]

This is a friendly reminder about NannoTalks2: Noelaerhabdaceae 
coccolithophores as recorders of atmospheric CO2 levels: carbon isotope 
systematics and insights into Neogene carbonate chemistry bySamuel 
Phelps onOctober 18th 14:00 UTC.  Tune in to our transmission on YouTube 
and Zoom and ask Samuel about his research.

“Understanding the relationship between carbon dioxide and global 
climate is critical for predicting the severity of future climate change 
resulting from ongoing anthropogenic CO₂ emissions. Estimates for the 
magnitude of warming range between ~3 and ~12°C, depending upon the 
timescale considered and actual CO₂ trajectory. To better understand the 
likely impacts of the Anthropocene, we must examine how CO₂ and climate 
have varied in the past, particularly during warm periods in Earth 
history with CO₂ levels higher than modern. The carbon isotope 
fractionation of marine algae recorded in alkenone biomarkers (εp) is 
one of the primary tools for reconstructing past atmospheric CO₂ 
variations. These molecules are produced by the Noelaerhabdaceae, a 
family of calcifying coccolithophorid algae that has flourished in the 
open ocean for tens of millions of years.  Recent studies have provided 
a deeper understanding of the complex mechanisms affecting alkenone 
carbon isotope fractionation, suggesting that the conventional framework 
for interpreting these records in terms of CO₂ may require reconsideration.”

YouTube:https://www.youtube.com/channel/UCzvtI1fp2nAK7p7zBi9Q0UQ 
<https://www.youtube.com/channel/UCzvtI1fp2nAK7p7zBi9Q0UQ>

Zoom room: https://us02web.zoom.us/j/83087667792 
<https://us02web.zoom.us/j/83087667792>


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://webmail.fcnym.unlp.edu.ar/pipermail/coccoliths/attachments/20211018/603ffdc0/attachment.htm>