Alkenone paleothermometry in the North Atlantic: A review and synthesis of surface sediment data and calibrations

Despite a clear correlation of alkenone unsaturation and sea surface temperatures (SST) throughout most parts of the ocean, scatter of the regression for various calibration equations has been shown to increase significantly at low SSTs. In this study, we combine previously published (n = 101) and n...

Full description

Saved in:
Bibliographic Details
Published in:Geochemistry, geophysics, geosystems : G3 geophysics, geosystems : G3, 2016-04, Vol.17 (4), p.1370-1382
Main Authors: Filippova, A., Kienast, M., Frank, M., Schneider, R. R.
Format: Article
Language:English
Subjects:
Absolute age
alkenones
calibration
Geophysics
haptophytes
Ice cover
Marine
Ocean temperature
Oceanography
Sea ice
Sea surface temperature
Sediment samplers
Sediments
western North Atlantic Ocean
Citations: Items that this one cites
Items that cite this one
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Despite a clear correlation of alkenone unsaturation and sea surface temperatures (SST) throughout most parts of the ocean, scatter of the regression for various calibration equations has been shown to increase significantly at low SSTs. In this study, we combine previously published (n = 101) and new (n = 51) surface sediment data from the northern North Atlantic to constrain uncertainties of alkenone paleothermometry at low SSTs and to discuss possible sources of the increased scatter in the regression. The correlation between alkenone unsaturation and SSTs is strongest, in particular at the cold end (SSTs 
ISSN:1525-2027
1525-2027
DOI:10.1002/2015GC006106