Lake dynamics modulate the air temperature variability recorded by sedimentary aquatic biomarkers: A Holocene case study from western Greenland

Cluett, A. A.; Thomas, E. K.; McKay, N. P.; Cowling, O. C.; Castañeda, I. S.; Morrill, C.

doi:10.1029/2022jg007106

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Lake dynamics modulate the air temperature variability recorded by sedimentary aquatic biomarkers: A Holocene case study from western Greenland

2023
By Cluett, A. A. ; Thomas, E. K. ; McKay, N. P. ; ...
Source: Journal of Geophysical Research: Biogeosciences (2023)

[PDF-3.29 MB]

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Journal Title:

Journal of Geophysical Research: Biogeosciences
Personal Author:

Cluett, A. A. ; Thomas, E. K. ; McKay, N. P. ; Cowling, O. C. ; Castañeda, I. S. ; ... More +

Cluett, A. A. ; Thomas, E. K. ; McKay, N. P. ; Cowling, O. C. ; Castañeda, I. S. ; Morrill, C. Less -
NOAA Program & Office:

NESDIS (National Environmental Satellite, Data, and Information Service) ; NCEI (National Centers for Environmental Information)

NESDIS (National Environmental Satellite, Data, and Information Service) ; NCEI (National Centers for Environmental Information) Less -
Description:

Quantitative temperature reconstructions from lacustrine organic geochemical proxies including branched glycerol dialkyl glycerol tetraethers (brGDGTs) and alkenones provide key constraints on past continental climates. However, estimation of air temperatures from proxies can be impacted by non-stationarity in the relationships between seasonal air and water temperatures, a factor not yet examined in strongly seasonal high-latitude settings. We pair downcore analyses of brGDGTs and alkenones measured on the same samples through the Holocene with forward-modeled proxy values based on thermodynamic lake model simulations for a western Greenland lake. The measured brGDGT distributions suggest that stable autochthonous (aquatic)
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Aquatic Science Atmospheric Science Ecology Forestry Paleontology Soil Science Water Science And Technology
Source:

Journal of Geophysical Research: Biogeosciences (2023)
DOI:

https://doi.org/10.1029/2022jg007106
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2169-8953;2169-8961;
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PDF
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American Geophysical Union (AGU)
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Journal Article
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urn:sha256:97f5e3e3398f2a67c98de430817b05b2a115f526413ecc1b446709c53c61c634
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https://repository.library.noaa.gov/view/noaa/52886/noaa_52886_DS1.pdf
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