A 900-year New England temperature reconstruction from in situ seasonally produced branched glycerol dialkyl glycerol tetraethers (brGDGTs)
Paleotemperature reconstructions are essential for distinguishing anthropogenic climate change from natural variability. An emerging method in paleolimnology is the use of branched glycerol dialkyl glycerol tetraethers (brGDGTs) in sediments to reconstruct temperature, but their application is hinde...
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Copernicus Publications
2018
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Online Access: | https://doi.org/10.5194/cp-14-1653-2018 https://www.clim-past.net/14/1653/2018/cp-14-1653-2018.pdf https://doaj.org/article/01e6b2b8c3ad4bac829f41b1e3f7410c |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:01e6b2b8c3ad4bac829f41b1e3f7410c 2023-05-15T17:34:50+02:00 A 900-year New England temperature reconstruction from in situ seasonally produced branched glycerol dialkyl glycerol tetraethers (brGDGTs) D. R. Miller M. H. Habicht B. A. Keisling I. S. Castañeda R. S. Bradley 2018-11-01 https://doi.org/10.5194/cp-14-1653-2018 https://www.clim-past.net/14/1653/2018/cp-14-1653-2018.pdf https://doaj.org/article/01e6b2b8c3ad4bac829f41b1e3f7410c en eng Copernicus Publications doi:10.5194/cp-14-1653-2018 1814-9324 1814-9332 https://www.clim-past.net/14/1653/2018/cp-14-1653-2018.pdf https://doaj.org/article/01e6b2b8c3ad4bac829f41b1e3f7410c undefined Climate of the Past, Vol 14, Pp 1653-1667 (2018) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2018 fttriple https://doi.org/10.5194/cp-14-1653-2018 2023-01-22T17:51:21Z Paleotemperature reconstructions are essential for distinguishing anthropogenic climate change from natural variability. An emerging method in paleolimnology is the use of branched glycerol dialkyl glycerol tetraethers (brGDGTs) in sediments to reconstruct temperature, but their application is hindered by a limited understanding of their sources, seasonal production, and transport. Here, we report seasonally resolved measurements of brGDGT production in the water column, in catchment soils, and in a sediment core from Basin Pond, a small, deep inland lake in Maine, USA. We find similar brGDGT distributions in both water column and lake sediment samples but the catchment soils have distinct brGDGT distributions suggesting that (1) brGDGTs are produced within the lake and (2) this in situ production dominates the down-core sedimentary signal. Seasonally, depth-resolved measurements indicate that most brGDGT production occurs in late fall, and at intermediate depths (18–30 m) in the water column. We utilize these observations to help interpret a Basin Pond brGDGT-based temperature reconstruction spanning the past 900 years. This record exhibits trends similar to a pollen record from the same site and also to regional and global syntheses of terrestrial temperatures over the last millennium. However, the Basin Pond temperature record shows higher-frequency variability than has previously been captured by such an archive in the northeastern United States, potentially attributed to the North Atlantic Oscillation and volcanic or solar activity. This first brGDGT-based multi-centennial paleoreconstruction from this region contributes to our understanding of the production and fate of brGDGTs in lacustrine systems. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Unknown Basin Pond ENVELOPE(-56.031,-56.031,51.117,51.117) Climate of the Past 14 11 1653 1667 |
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fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir D. R. Miller M. H. Habicht B. A. Keisling I. S. Castañeda R. S. Bradley A 900-year New England temperature reconstruction from in situ seasonally produced branched glycerol dialkyl glycerol tetraethers (brGDGTs) |
topic_facet |
geo envir |
description |
Paleotemperature reconstructions are essential for distinguishing anthropogenic climate change from natural variability. An emerging method in paleolimnology is the use of branched glycerol dialkyl glycerol tetraethers (brGDGTs) in sediments to reconstruct temperature, but their application is hindered by a limited understanding of their sources, seasonal production, and transport. Here, we report seasonally resolved measurements of brGDGT production in the water column, in catchment soils, and in a sediment core from Basin Pond, a small, deep inland lake in Maine, USA. We find similar brGDGT distributions in both water column and lake sediment samples but the catchment soils have distinct brGDGT distributions suggesting that (1) brGDGTs are produced within the lake and (2) this in situ production dominates the down-core sedimentary signal. Seasonally, depth-resolved measurements indicate that most brGDGT production occurs in late fall, and at intermediate depths (18–30 m) in the water column. We utilize these observations to help interpret a Basin Pond brGDGT-based temperature reconstruction spanning the past 900 years. This record exhibits trends similar to a pollen record from the same site and also to regional and global syntheses of terrestrial temperatures over the last millennium. However, the Basin Pond temperature record shows higher-frequency variability than has previously been captured by such an archive in the northeastern United States, potentially attributed to the North Atlantic Oscillation and volcanic or solar activity. This first brGDGT-based multi-centennial paleoreconstruction from this region contributes to our understanding of the production and fate of brGDGTs in lacustrine systems. |
format |
Article in Journal/Newspaper |
author |
D. R. Miller M. H. Habicht B. A. Keisling I. S. Castañeda R. S. Bradley |
author_facet |
D. R. Miller M. H. Habicht B. A. Keisling I. S. Castañeda R. S. Bradley |
author_sort |
D. R. Miller |
title |
A 900-year New England temperature reconstruction from in situ seasonally produced branched glycerol dialkyl glycerol tetraethers (brGDGTs) |
title_short |
A 900-year New England temperature reconstruction from in situ seasonally produced branched glycerol dialkyl glycerol tetraethers (brGDGTs) |
title_full |
A 900-year New England temperature reconstruction from in situ seasonally produced branched glycerol dialkyl glycerol tetraethers (brGDGTs) |
title_fullStr |
A 900-year New England temperature reconstruction from in situ seasonally produced branched glycerol dialkyl glycerol tetraethers (brGDGTs) |
title_full_unstemmed |
A 900-year New England temperature reconstruction from in situ seasonally produced branched glycerol dialkyl glycerol tetraethers (brGDGTs) |
title_sort |
900-year new england temperature reconstruction from in situ seasonally produced branched glycerol dialkyl glycerol tetraethers (brgdgts) |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/cp-14-1653-2018 https://www.clim-past.net/14/1653/2018/cp-14-1653-2018.pdf https://doaj.org/article/01e6b2b8c3ad4bac829f41b1e3f7410c |
long_lat |
ENVELOPE(-56.031,-56.031,51.117,51.117) |
geographic |
Basin Pond |
geographic_facet |
Basin Pond |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Climate of the Past, Vol 14, Pp 1653-1667 (2018) |
op_relation |
doi:10.5194/cp-14-1653-2018 1814-9324 1814-9332 https://www.clim-past.net/14/1653/2018/cp-14-1653-2018.pdf https://doaj.org/article/01e6b2b8c3ad4bac829f41b1e3f7410c |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/cp-14-1653-2018 |
container_title |
Climate of the Past |
container_volume |
14 |
container_issue |
11 |
container_start_page |
1653 |
op_container_end_page |
1667 |
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1766133789840375808 |