气候变化领域集成服务门户(CCPortal): Carbon isotopic record of CO2 from the Holocene of the Dome C ice core

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.728699
	Carbon isotopic record of CO2 from the Holocene of the Dome C ice core
	Elsig; Joachim; Schmitt; Jochen; Leuenberger; Daiana; Schneider; Robert; Eyer; Marc; Leuenberger; Markus C; Joos; Fortunat; Fischer; Hubertus; Stocker; Thomas F
发布日期	2009-10-22
数据集类型	dataset
英文简介	Reconstructions of atmospheric CO2 concentrations based on Antarctic ice cores reveal significant changes during the Holocene epoch, but the processes responsible for these changes in CO2 concentrations have not been unambiguously identified. Distinct characteristics in the carbon isotope signatures of the major carbon reservoirs (ocean, biosphere, sediments and atmosphere) constrain variations in the CO2 fluxes between those reservoirs. Here we present a highly resolved atmospheric d13C record for the past 11,000 years from measurements on atmospheric CO2 trapped in an Antarctic ice core. From mass-balance inverse model calculations performed with a simplified carbon cycle model, we show that the decrease in atmospheric CO2 of about 5 parts per million by volume (p.p.m.v.) and the increase in d13C of about 0.25% during the early Holocene is most probably the result of a combination of carbon uptake of about 290 gigatonnes of carbon by the land biosphere and carbon release from the ocean in response to carbonate compensation of the terrestrial uptake during the termination of the last ice age. The 20 p.p.m.v. increase of atmospheric CO2 and the small decrease in d13C of about 0.05% during the later Holocene can mostly be explained by contributions from carbonate compensation of earlier land-biosphere uptake and coral reef formation, with only a minor contribution from a small decrease of the land-biosphere carbon inventory.
空间范围	Latitude: -75.100000 * Longitude: 123.350000
语种	英语
国家	国际
学科大类	气候变化
学科子类	冰冻圈
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/213826
推荐引用方式 GB/T 7714	Elsig,Joachim,Schmitt,et al. Carbon isotopic record of CO2 from the Holocene of the Dome C ice core.2009-10-22.https://doi.org/10.1594/PANGAEA.728699.