Recent changes in north-west Greenland climate documented by NEEM shallow ice core data and simulations, and implications for past-temperature reconstructions
Combined records of snow accumulation rate, δ18O and deuterium excess were produced from several shallow ice cores and snow pits at NEEM (North Greenland Eemian Ice Drilling), covering the period from 1724 to 2007. They are used to investigate recent climate variability and characterise the isotope–...
Published in: | The Cryosphere |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
COPERNICUS GESELLSCHAFT MBH
2015
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/38625/ https://epic.awi.de/id/eprint/38625/1/masson-delmotte2015tc.pdf https://doi.org/10.5194/tc-9-1481-2015 https://hdl.handle.net/10013/epic.45938 https://hdl.handle.net/10013/epic.45938.d001 |
id |
ftawi:oai:epic.awi.de:38625 |
---|---|
record_format |
openpolar |
spelling |
ftawi:oai:epic.awi.de:38625 2024-09-15T18:09:36+00:00 Recent changes in north-west Greenland climate documented by NEEM shallow ice core data and simulations, and implications for past-temperature reconstructions Masson-Delmotte, V. Steen-Larsen, H. C. Ortega, P. Swingedouw, D. Popp, T. Vinther, B. M. Oerter, Hans Sveinbjornsdottir, A. E. Gudlaugsdottir, H. Box, J. E. Falourd, S. Fettweis, X. Gallée, H. Garnier, E. Gkinis, V. Jouzel, J. Landais, A. Minster, B. Paradis, N. Orsi, A. Risi, C. Werner, Martin White, J. W. C. 2015 application/pdf https://epic.awi.de/id/eprint/38625/ https://epic.awi.de/id/eprint/38625/1/masson-delmotte2015tc.pdf https://doi.org/10.5194/tc-9-1481-2015 https://hdl.handle.net/10013/epic.45938 https://hdl.handle.net/10013/epic.45938.d001 unknown COPERNICUS GESELLSCHAFT MBH https://epic.awi.de/id/eprint/38625/1/masson-delmotte2015tc.pdf https://hdl.handle.net/10013/epic.45938.d001 Masson-Delmotte, V. , Steen-Larsen, H. C. , Ortega, P. , Swingedouw, D. , Popp, T. , Vinther, B. M. , Oerter, H. , Sveinbjornsdottir, A. E. , Gudlaugsdottir, H. , Box, J. E. , Falourd, S. , Fettweis, X. , Gallée, H. , Garnier, E. , Gkinis, V. , Jouzel, J. , Landais, A. , Minster, B. , Paradis, N. , Orsi, A. , Risi, C. , Werner, M. orcid:0000-0002-6473-0243 and White, J. W. C. (2015) Recent changes in north-west Greenland climate documented by NEEM shallow ice core data and simulations, and implications for past-temperature reconstructions , The Cryosphere, 9 (4), pp. 1481-1504 . doi:10.5194/tc-9-1481-2015 <https://doi.org/10.5194/tc-9-1481-2015> , hdl:10013/epic.45938 EPIC3The Cryosphere, COPERNICUS GESELLSCHAFT MBH, 9(4), pp. 1481-1504, ISSN: 1994-0424 Article isiRev 2015 ftawi https://doi.org/10.5194/tc-9-1481-2015 2024-06-24T04:12:21Z Combined records of snow accumulation rate, δ18O and deuterium excess were produced from several shallow ice cores and snow pits at NEEM (North Greenland Eemian Ice Drilling), covering the period from 1724 to 2007. They are used to investigate recent climate variability and characterise the isotope–temperature relationship. We find that NEEM records are only weakly affected by inter-annual changes in the North Atlantic Oscillation. Decadal δ18O and accumulation variability is related to North Atlantic sea surface temperature and is enhanced at the beginning of the 19th century. No long-term trend is observed in the accumulation record. By contrast, NEEM δ18O shows multidecadal increasing trends in the late 19th century and since the 1980s. The strongest annual positive δ18O values are recorded at NEEM in 1928 and 2010, while maximum accumulation occurs in 1933. The last decade is the most enriched in δ18O (warmest), while the 11-year periods with the strongest depletion (coldest) are depicted at NEEM in 1815–1825 and 1836–1846, which are also the driest 11-year periods. The NEEM accumulation and δ18O records are strongly correlated with outputs from atmospheric models, nudged to atmospheric reanalyses. Best performance is observed for ERA reanalyses. Gridded temperature reconstructions, instrumental data and model outputs at NEEM are used to estimate the multidecadal accumulation–temperature and δ18O–temperature relationships for the strong warming period in 1979–2007. The accumulation sensitivity to temperature is estimated at 11 ± 2 % °C−1 and the δ18O–temperature slope at 1.1 ± 0.2 ‰ °C−1, about twice as large as previously used to estimate last interglacial temperature change from the bottom part of the NEEM deep ice core. Article in Journal/Newspaper Greenland ice core North Atlantic North Atlantic oscillation North Greenland The Cryosphere Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) The Cryosphere 9 4 1481 1504 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Combined records of snow accumulation rate, δ18O and deuterium excess were produced from several shallow ice cores and snow pits at NEEM (North Greenland Eemian Ice Drilling), covering the period from 1724 to 2007. They are used to investigate recent climate variability and characterise the isotope–temperature relationship. We find that NEEM records are only weakly affected by inter-annual changes in the North Atlantic Oscillation. Decadal δ18O and accumulation variability is related to North Atlantic sea surface temperature and is enhanced at the beginning of the 19th century. No long-term trend is observed in the accumulation record. By contrast, NEEM δ18O shows multidecadal increasing trends in the late 19th century and since the 1980s. The strongest annual positive δ18O values are recorded at NEEM in 1928 and 2010, while maximum accumulation occurs in 1933. The last decade is the most enriched in δ18O (warmest), while the 11-year periods with the strongest depletion (coldest) are depicted at NEEM in 1815–1825 and 1836–1846, which are also the driest 11-year periods. The NEEM accumulation and δ18O records are strongly correlated with outputs from atmospheric models, nudged to atmospheric reanalyses. Best performance is observed for ERA reanalyses. Gridded temperature reconstructions, instrumental data and model outputs at NEEM are used to estimate the multidecadal accumulation–temperature and δ18O–temperature relationships for the strong warming period in 1979–2007. The accumulation sensitivity to temperature is estimated at 11 ± 2 % °C−1 and the δ18O–temperature slope at 1.1 ± 0.2 ‰ °C−1, about twice as large as previously used to estimate last interglacial temperature change from the bottom part of the NEEM deep ice core. |
format |
Article in Journal/Newspaper |
author |
Masson-Delmotte, V. Steen-Larsen, H. C. Ortega, P. Swingedouw, D. Popp, T. Vinther, B. M. Oerter, Hans Sveinbjornsdottir, A. E. Gudlaugsdottir, H. Box, J. E. Falourd, S. Fettweis, X. Gallée, H. Garnier, E. Gkinis, V. Jouzel, J. Landais, A. Minster, B. Paradis, N. Orsi, A. Risi, C. Werner, Martin White, J. W. C. |
spellingShingle |
Masson-Delmotte, V. Steen-Larsen, H. C. Ortega, P. Swingedouw, D. Popp, T. Vinther, B. M. Oerter, Hans Sveinbjornsdottir, A. E. Gudlaugsdottir, H. Box, J. E. Falourd, S. Fettweis, X. Gallée, H. Garnier, E. Gkinis, V. Jouzel, J. Landais, A. Minster, B. Paradis, N. Orsi, A. Risi, C. Werner, Martin White, J. W. C. Recent changes in north-west Greenland climate documented by NEEM shallow ice core data and simulations, and implications for past-temperature reconstructions |
author_facet |
Masson-Delmotte, V. Steen-Larsen, H. C. Ortega, P. Swingedouw, D. Popp, T. Vinther, B. M. Oerter, Hans Sveinbjornsdottir, A. E. Gudlaugsdottir, H. Box, J. E. Falourd, S. Fettweis, X. Gallée, H. Garnier, E. Gkinis, V. Jouzel, J. Landais, A. Minster, B. Paradis, N. Orsi, A. Risi, C. Werner, Martin White, J. W. C. |
author_sort |
Masson-Delmotte, V. |
title |
Recent changes in north-west Greenland climate documented by NEEM shallow ice core data and simulations, and implications for past-temperature reconstructions |
title_short |
Recent changes in north-west Greenland climate documented by NEEM shallow ice core data and simulations, and implications for past-temperature reconstructions |
title_full |
Recent changes in north-west Greenland climate documented by NEEM shallow ice core data and simulations, and implications for past-temperature reconstructions |
title_fullStr |
Recent changes in north-west Greenland climate documented by NEEM shallow ice core data and simulations, and implications for past-temperature reconstructions |
title_full_unstemmed |
Recent changes in north-west Greenland climate documented by NEEM shallow ice core data and simulations, and implications for past-temperature reconstructions |
title_sort |
recent changes in north-west greenland climate documented by neem shallow ice core data and simulations, and implications for past-temperature reconstructions |
publisher |
COPERNICUS GESELLSCHAFT MBH |
publishDate |
2015 |
url |
https://epic.awi.de/id/eprint/38625/ https://epic.awi.de/id/eprint/38625/1/masson-delmotte2015tc.pdf https://doi.org/10.5194/tc-9-1481-2015 https://hdl.handle.net/10013/epic.45938 https://hdl.handle.net/10013/epic.45938.d001 |
genre |
Greenland ice core North Atlantic North Atlantic oscillation North Greenland The Cryosphere |
genre_facet |
Greenland ice core North Atlantic North Atlantic oscillation North Greenland The Cryosphere |
op_source |
EPIC3The Cryosphere, COPERNICUS GESELLSCHAFT MBH, 9(4), pp. 1481-1504, ISSN: 1994-0424 |
op_relation |
https://epic.awi.de/id/eprint/38625/1/masson-delmotte2015tc.pdf https://hdl.handle.net/10013/epic.45938.d001 Masson-Delmotte, V. , Steen-Larsen, H. C. , Ortega, P. , Swingedouw, D. , Popp, T. , Vinther, B. M. , Oerter, H. , Sveinbjornsdottir, A. E. , Gudlaugsdottir, H. , Box, J. E. , Falourd, S. , Fettweis, X. , Gallée, H. , Garnier, E. , Gkinis, V. , Jouzel, J. , Landais, A. , Minster, B. , Paradis, N. , Orsi, A. , Risi, C. , Werner, M. orcid:0000-0002-6473-0243 and White, J. W. C. (2015) Recent changes in north-west Greenland climate documented by NEEM shallow ice core data and simulations, and implications for past-temperature reconstructions , The Cryosphere, 9 (4), pp. 1481-1504 . doi:10.5194/tc-9-1481-2015 <https://doi.org/10.5194/tc-9-1481-2015> , hdl:10013/epic.45938 |
op_doi |
https://doi.org/10.5194/tc-9-1481-2015 |
container_title |
The Cryosphere |
container_volume |
9 |
container_issue |
4 |
container_start_page |
1481 |
op_container_end_page |
1504 |
_version_ |
1810447178327392256 |