气候变化领域集成服务门户(CCPortal): Glaciological characteristics and carbon dioxide record of ice cores from Antarctica

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.806120
	Glaciological characteristics and carbon dioxide record of ice cores from Antarctica
	Ahn; Jinho; Brook; Edward J; Mitchell; Logan E; Rosen; Julia L; McConnell; Joseph R; Taylor; Kendrick C; Etheridge; David; Rubino; Mauro
发布日期	2012-01-28
数据集类型	dataset
英文简介	We report a decadally resolved record of atmospheric CO2 concentration for the last 1000 years, obtained from the West Antarctic Ice Sheet (WAIS) Divide shallow ice core. The most prominent feature of the pre-industrial period is a rapid ~7 ppm decrease of CO2 in a span of ~20-50 years at ~1600 A.D. This observation confirms the timing of an abrupt atmospheric CO2 decrease of ~10 ppm observed for that time period in the Law Dome ice core CO2 records, but the true magnitude of the decrease remains unclear. Atmospheric CO2 variations over the time period 1000-1800 A.D. are statistically correlated with northern hemispheric climate and tropical Indo-Pacific sea surface temperature. However, the exact relationship between CO2 and climate remains elusive due to regional climate variations and/or uneven geographical data density of paleoclimate records. We observe small differences of 0 ~2% (0 ~ 6 ppm) among the high-precision CO2 records from the Law Dome, EPICA Dronning Maud Land and WAIS Divide Antarctic ice cores. However, those records share common trends of CO2 change on centennial to multicentennial time scales, and clearly show that atmospheric CO2 has been increasing above preindustrial levels since ~1850 A.D.
空间范围	Median Latitude: -73.161535 * Median Longitude: 162.344534 * South-bound Latitude: -79.462950 * West-bound Longitude: 0.258300 * North-bound Latitude: -66.733330 * East-bound Longitude: -112.125100
时间范围	2005-12-19T00:00:00 - 2005-12-19T00:00:00
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/215545
推荐引用方式 GB/T 7714	Ahn,Jinho,Brook,et al. Glaciological characteristics and carbon dioxide record of ice cores from Antarctica.2012-01-28.https://doi.org/10.1594/PANGAEA.806120.