Reconstructing Antarctic Holocene climate/environmental changes from ice and marine cores
Paleotemperature reconstructions from Antarctic ice cores rely mainly on δD and δ18O records, with the main key factors controlling their observed distribution in Antarctic surface snow being related to the condensation temperature of the precipitation and the origin of the moisture. Reconstructions...
Main Authors: | , , , , , , , , , , , , |
---|---|
Other Authors: | , , , , , , , , , , , , , |
Format: | Conference Object |
Language: | English |
Published: |
University of Edinburg
2011
|
Subjects: | |
Online Access: | http://hdl.handle.net/11368/2604421 |
id |
ftunitriestiris:oai:arts.units.it:11368/2604421 |
---|---|
record_format |
openpolar |
spelling |
ftunitriestiris:oai:arts.units.it:11368/2604421 2023-05-15T13:49:21+02:00 Reconstructing Antarctic Holocene climate/environmental changes from ice and marine cores STENNI, BARBARA BRAIDA, MARTINA COLIZZA, ESTER BONAZZA, MATTIA XAVIER CROSTA VALERIE MASSON DELMOTTE HANS OERTER GERHARD KUHN KATY POL BARBARA DELMONTE ENRICO SELMO JENNIFER PIKE CLAIRE ALLEN Martin Siegert Stenni, Barbara Xavier, Crosta Braida, Martina VALERIE MASSON, Delmotte Hans, Oerter Gerhard, Kuhn Katy, Pol Colizza, Ester Barbara, Delmonte Enrico, Selmo Jennifer, Pike Bonazza, Mattia Claire, Allen 2011 ELETTRONICO http://hdl.handle.net/11368/2604421 eng eng University of Edinburg country:GBR place:Edingurgo ispartofbook:11th International Symposium on Antarctic Earth Sciences, 11th International Symposium on Antarctic Earth Sciences, firstpage:97 lastpage:97 numberofpages:1 http://hdl.handle.net/11368/2604421 Antarctica ice cores sediment cores Holocene paleoclimate info:eu-repo/semantics/conferenceObject 2011 ftunitriestiris 2023-04-09T06:09:11Z Paleotemperature reconstructions from Antarctic ice cores rely mainly on δD and δ18O records, with the main key factors controlling their observed distribution in Antarctic surface snow being related to the condensation temperature of the precipitation and the origin of the moisture. Reconstructions of past sea-surface temperatures (SST) and sea ice cover (SIC) from marine cores at high southern latitudes mainly rely on diatom-based transfer functions. However, quantitative records of SST and SIC are concentrated in the mid-latitudes of the Southern Ocean and only few records exist in the Antarctic coastal areas. Here we present an overview of the Holocene climate records that have been compiled in the framework of the ESF-HOLOCLIP project, as well as a new isotopic record from the TALDICE ice core, recently drilled in a peripheral dome facing the Ross Sea. One of the main goals of HOLOCLIP is to reconstruct Holocene climate/environmental changes from ice and marine cores and integrate these data in model simulations. The main common features recognized in Holocene climate records obtained from ice cores are a warm early Holocene (from about 10 to 11.5 ka BP), a cool period centred at ~8 ka BP and a secondary optimum peaking at ~4 ka BP. The Holocene climate reconstructions obtained from sediment cores demonstrate a warmer early-mid Holocene hypsithermal followed by a cooler neoglacial with an amplitude and timing of the transitions variable regionally around Antarctica. Though there exist some problems in both ice and marine core records (chronologies, temporal resolution, global vs. regional, annual vs. seasonal), such approach is unique to fuel paleoclimate models and to better understand the ocean-ice-atmosphere interactions at high southern latitudes beyond the instrumental period. Conference Object Antarc* Antarctic Antarctica ice core Ross Sea Sea ice Southern Ocean Università degli studi di Trieste: ArTS (Archivio della ricerca di Trieste) Antarctic Southern Ocean The Antarctic Ross Sea |
institution |
Open Polar |
collection |
Università degli studi di Trieste: ArTS (Archivio della ricerca di Trieste) |
op_collection_id |
ftunitriestiris |
language |
English |
topic |
Antarctica ice cores sediment cores Holocene paleoclimate |
spellingShingle |
Antarctica ice cores sediment cores Holocene paleoclimate STENNI, BARBARA BRAIDA, MARTINA COLIZZA, ESTER BONAZZA, MATTIA XAVIER CROSTA VALERIE MASSON DELMOTTE HANS OERTER GERHARD KUHN KATY POL BARBARA DELMONTE ENRICO SELMO JENNIFER PIKE CLAIRE ALLEN Reconstructing Antarctic Holocene climate/environmental changes from ice and marine cores |
topic_facet |
Antarctica ice cores sediment cores Holocene paleoclimate |
description |
Paleotemperature reconstructions from Antarctic ice cores rely mainly on δD and δ18O records, with the main key factors controlling their observed distribution in Antarctic surface snow being related to the condensation temperature of the precipitation and the origin of the moisture. Reconstructions of past sea-surface temperatures (SST) and sea ice cover (SIC) from marine cores at high southern latitudes mainly rely on diatom-based transfer functions. However, quantitative records of SST and SIC are concentrated in the mid-latitudes of the Southern Ocean and only few records exist in the Antarctic coastal areas. Here we present an overview of the Holocene climate records that have been compiled in the framework of the ESF-HOLOCLIP project, as well as a new isotopic record from the TALDICE ice core, recently drilled in a peripheral dome facing the Ross Sea. One of the main goals of HOLOCLIP is to reconstruct Holocene climate/environmental changes from ice and marine cores and integrate these data in model simulations. The main common features recognized in Holocene climate records obtained from ice cores are a warm early Holocene (from about 10 to 11.5 ka BP), a cool period centred at ~8 ka BP and a secondary optimum peaking at ~4 ka BP. The Holocene climate reconstructions obtained from sediment cores demonstrate a warmer early-mid Holocene hypsithermal followed by a cooler neoglacial with an amplitude and timing of the transitions variable regionally around Antarctica. Though there exist some problems in both ice and marine core records (chronologies, temporal resolution, global vs. regional, annual vs. seasonal), such approach is unique to fuel paleoclimate models and to better understand the ocean-ice-atmosphere interactions at high southern latitudes beyond the instrumental period. |
author2 |
Martin Siegert Stenni, Barbara Xavier, Crosta Braida, Martina VALERIE MASSON, Delmotte Hans, Oerter Gerhard, Kuhn Katy, Pol Colizza, Ester Barbara, Delmonte Enrico, Selmo Jennifer, Pike Bonazza, Mattia Claire, Allen |
format |
Conference Object |
author |
STENNI, BARBARA BRAIDA, MARTINA COLIZZA, ESTER BONAZZA, MATTIA XAVIER CROSTA VALERIE MASSON DELMOTTE HANS OERTER GERHARD KUHN KATY POL BARBARA DELMONTE ENRICO SELMO JENNIFER PIKE CLAIRE ALLEN |
author_facet |
STENNI, BARBARA BRAIDA, MARTINA COLIZZA, ESTER BONAZZA, MATTIA XAVIER CROSTA VALERIE MASSON DELMOTTE HANS OERTER GERHARD KUHN KATY POL BARBARA DELMONTE ENRICO SELMO JENNIFER PIKE CLAIRE ALLEN |
author_sort |
STENNI, BARBARA |
title |
Reconstructing Antarctic Holocene climate/environmental changes from ice and marine cores |
title_short |
Reconstructing Antarctic Holocene climate/environmental changes from ice and marine cores |
title_full |
Reconstructing Antarctic Holocene climate/environmental changes from ice and marine cores |
title_fullStr |
Reconstructing Antarctic Holocene climate/environmental changes from ice and marine cores |
title_full_unstemmed |
Reconstructing Antarctic Holocene climate/environmental changes from ice and marine cores |
title_sort |
reconstructing antarctic holocene climate/environmental changes from ice and marine cores |
publisher |
University of Edinburg |
publishDate |
2011 |
url |
http://hdl.handle.net/11368/2604421 |
geographic |
Antarctic Southern Ocean The Antarctic Ross Sea |
geographic_facet |
Antarctic Southern Ocean The Antarctic Ross Sea |
genre |
Antarc* Antarctic Antarctica ice core Ross Sea Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica ice core Ross Sea Sea ice Southern Ocean |
op_relation |
ispartofbook:11th International Symposium on Antarctic Earth Sciences, 11th International Symposium on Antarctic Earth Sciences, firstpage:97 lastpage:97 numberofpages:1 http://hdl.handle.net/11368/2604421 |
_version_ |
1766251198042603520 |