CO2 and Delta 13CO2 in Antarctic Ice Cores

9980691 Wahlen该奖项是为了支持三年的资金，以重建南极洲冰芯在几个气候时期的大气二氧化碳(CO2)和碳13同位素(D13C)浓度。将对全新世、末次冰盛期(LGM)-全新世过渡和冰川盛期/冰期间期的样品进行研究。除了泰勒穹顶和沃斯托克冰芯的测量外，还将制作1998/99年钻探的Siple Dome冰芯的样品。主要目标是研究在冰川消融期间以及在快速气候变化事件(例如丹斯加德-奥施格事件)期间大气二氧化碳浓度及其碳同位素组成的变化与温度变化(由冰层的18dO和Dd表示)之间的相位关系。这将有助于确定不同气候时期期间和不同气候时期之间全球碳循环的系统变化，并确定广泛传播的北半球温度平稳/年际事件是否产生了全球大气二氧化碳信号。将使用经过验证的实验技术。

9980691WahlenThis award is for support for three years of funding to reconstruct the atmospheric carbon dioxide (CO2) and carbon-13 isotope (d13C) concentration in ice cores from Antarctica over several climatic periods. Samples from the Holocene, the Last Glacial Maximum (LGM)-Holocene transition and glacial stadial/interstadial episodes will be examined. Samples from the Siple Dome ice core drilled in 1998/99 will be made, in addition to measurements from the Taylor Dome and Vostok ice cores. The major objectives are to investigate the phase relationships between variations in the concentration of atmospheric CO2, its carbon isotope composition, and temperature changes (indicated by 18dO and dD of the ice) during deglaciations as well as across rapid climate change events (e.g. Dansgaard-Oeschger events). This will help to determine systematic changes in the global carbon cycle during and between different climatic periods, and to ascertain if the widely spread northern hemisphere temperature stadial/interstadial events produced a global atmospheric carbon dioxide signal. Proven experimental techniques will be used.