Reconciling glacial Antarctic water stable isotopes with ice sheet topography and the isotopic paleothermometer.
Reconciling glacial Antarctic water stable isotopes with ice sheet topography and the isotopic paleothermometer.
复制标题
DOI:
10.1038/s41467-018-05430-y
复制
发表时间:
2018-08-30
影响因子:
16.6
通讯作者:
Lohmann G
中科院分区:
文献类型:
--
作者:
Werner M;Jouzel J;Masson-Delmotte V;Lohmann G
Stable water isotope records from Antarctica are key for our understanding of Quaternary climate variations. However, the exact quantitative interpretation of these important climate proxy records in terms of surface temperature, ice sheet height and other climatic changes is still a matter of debate. Here we report results obtained with an atmospheric general circulation model equipped with water isotopes, run at a high-spatial horizontal resolution of one-by-one degree. Comparing different glacial maximum ice sheet reconstructions, a best model data match is achieved for the PMIP3 reconstruction. Reduced West Antarctic elevation changes between 400 and 800 m lead to further improved agreement with ice core data. Our modern and glacial climate simulations support the validity of the isotopic paleothermometer approach based on the use of present-day observations and reveal that a glacial ocean state as displayed in the GLAMAP reconstruction is suitable for capturing the observed glacial isotope changes in Antarctic ice cores. Despite their importance, the accuracy of the quantitative interpretation of Antarctic ice core stable water isotope records remains a matter of debate. Here, the authors use an isotope-enabled atmospheric general circulation model to test and validate the isotopic paleothermometer approach.
登录
查看更多内容
影响因子:
4.3
作者:
Guillevic, M.;Bazin, L.;Vinther, B. M.
通讯作者:
Vinther, B. M.
影响因子:
4.3
作者:
Bazin, L.;Landais, A.;Wolff, E.
通讯作者:
Wolff, E.
影响因子:
4.3
作者:
Capron, E.;Landais, A.;Prie, F.
通讯作者:
Prie, F.
DOI:
10.1073/pnas.1609132113
发表时间:
2016-12-13
影响因子:
11.1
作者:
Cuffey, Kurt M.;Clow, Gary D.;Severinghaus, Jeffrey P.
通讯作者:
Severinghaus, Jeffrey P.
影响因子:
4
作者:
Briggs, Robert D.;Pollard, David;Tarasov, Lev
通讯作者:
Tarasov, Lev