气候变化领域集成服务门户(CCPortal): Water stable oxygen isotope records from six Antarctic ice core sites for the present and last interglacial periods

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.785228
	Water stable oxygen isotope records from six Antarctic ice core sites for the present and last interglacial periods
	Masson-Delmotte; Valerie; Buiron; Daphné; Ekaykin; Alexey A; Frezzotti; Massimo; Gallée; Hubert; Jouzel; Jean; Krinner; Gerhard; Landais; Amaelle; Motoyama; Hideaki; Oerter; Hans; Pol; Katy; Pollard; David; Ritz; Catherine; Schlosser; Elisabeth; Sime; Louise C; Sodemann; Harald; Stenni; Barbara; Uemura; Ryu; Vimeux; Françoise
发布日期	2011-06-28
数据集类型	dataset
英文简介	We compare the present and last interglacial periods as recorded in Antarctic water stable isotope records now available at various temporal resolutions from six East Antarctic ice cores: Vostok, Taylor Dome, EPICA Dome C (EDC), EPICA Dronning Maud Land (EDML), Dome Fuji and the recent TALDICE ice core from Talos Dome. We first review the different modern site characteristics in terms of ice flow, meteorological conditions, precipitation intermittency and moisture origin, as depicted by meteorological data, atmospheric reanalyses and Lagrangian moisture source diagnostics. These different factors can indeed alter the relationships between temperature and water stable isotopes. Using five records with sufficient resolution on the EDC3 age scale, common features are quantified through principal component analyses. Consistent with instrumental records and atmospheric model results, the ice core data depict rather coherent and homogenous patterns in East Antarctica during the last two interglacials. Across the East Antarctic plateau, regional differences, with respect to the common East Antarctic signal, appear to have similar patterns during the current and last interglacials. We identify two abrupt shifts in isotopic records during the glacial inception at TALDICE and EDML, likely caused by regional sea ice expansion. These regional differences are discussed in terms of moisture origin and in terms of past changes in local elevation histories, which are compared to ice sheet model results. Our results suggest that elevation changes may contribute significantly to inter-site differences. These elevation changes may be underestimated by current ice sheet models
空间范围	Median Latitude: -75.822179 * Median Longitude: 102.646422 * South-bound Latitude: -78.466670 * West-bound Longitude: 0.068400 * North-bound Latitude: -72.783330 * East-bound Longitude: 159.066670
时间范围	1982-01-01T00:00:00 - 2008-12-31T00:00:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/226923
推荐引用方式 GB/T 7714	Masson-Delmotte,Valerie,Buiron,et al. Water stable oxygen isotope records from six Antarctic ice core sites for the present and last interglacial periods.2011-06-28.https://doi.org/10.1594/PANGAEA.785228.