Trace and Ultra-Trace Chemistry Measurements of the WAIS Divide Ice Core

该奖项支持一个项目，该项目使用独特的、高深度分辨率的一系列元素、化学物种和冰的性质记录，这些记录是在南极西部的两个WAIS划分浅冰芯和一个浅英国冰芯中测量的，以解决关键的古气候、环境和冰盖质量平衡问题。CFA-TE冰芯分析方法的最新发展为在WAIS Divide以相对低廉的成本开发高分辨率、广谱的冰川化学记录提供了机会。这些丰富的数据与格陵兰岛和其他南极地点近几十年至几个世纪的CFA-TE测量数据一起，将为利用冰川化学数据研究环境和全球变化问题开辟新的途径，这些问题包括从人为和火山微量元素沉降到半球尺度环流、生物地球化学、快速气候变化事件、长期气候变化和冰盖质量平衡的变化。作为拟议研究的一部分，将启动并扩大与美国、阿根廷和英国研究人员的合作，以直接解决国际极地年的三个主要主题（即：当前环境状况、过去和现在的环境和人类变化以及极地-全球相互作用）。这些国际合作者的贡献将包括冰芯样本、冰芯和气象模型数据，以及南极冰川学、气候学、气象学和生物地球化学方面的广泛专业知识。这项工作更广泛的影响包括对学生的培训。该项目将部分支持一名博士生和每小时一次的本科生参与。我们将尽一切努力吸引来自代表性不足群体的学生担任这些职位。为了应对将科学研究成果引入公共政策辩论的挑战，我们将继续努力在高知名度的期刊上发表研究成果，向政策制定者提供研究成果，并与NSF媒体办公室合作，通过大众媒体项目接触公众。K-12教师和课堂的参与将通过与当地学校和NSF的教师体验南极和北极（或类似）项目合作来实现，该项目与WAIS Divide和其他极地研究人员合作。

0538427McConnell This award supports a project to use unique, high-depth-resolution records of a range of elements, chemical species, and ice properties measured in two WAIS Divide shallow ice cores and one shallow British ice core from West Antarctic to address critical paleoclimate, environmental, and ice-sheet mass-balance questions. Recent development of the CFA-TE method for ice-core analysis presents the opportunity to develop high-resolution, broad-spectrum glaciochemical records at WAIS Divide at relatively modest cost. Together with CFA-TE measurements from Greenland and other Antarctic sites spanning recent decades to centuries, these rich data will open new avenues for using glaciochemical data to investigate environmental and global changes issues ranging from anthropogenic and volcanic-trace-element fallout to changes in hemispheric-scale circulation, biogeochemistry, rapid-climate-change events, long-term climate change, and ice-sheet mass balance. As part of the proposed research, collaborations with U.S., Argentine, and British researchers will be initiated and expanded to directly address three major IPY themes (i.e., present environmental status, past and present environmental and human change, and polar-global interactions). Included in the contributions from these international collaborators will be ice-core samples, ice-core and meteorological model data, and extensive expertise in Antarctic glaciology, climatology, meteorology, and biogeochemistry. The broader impacts of the work include the training of students. The project will partially support one Ph.D. student and hourly undergraduate involvement. Every effort will be made to attract students from underrepresented groups to these positions. To address the challenge of introducing results of scientific research to the public policy debate, we will continue efforts to publish findings in high visibility journals, provide research results to policy makers, and work with the NSF media office to reach the public through mass-media programs. K-12 teacher and classroom involvement will be realized through outreach to local schools and NSF's Teachers Experiencing the Antarctic and Arctic (or similar) program in collaboration with WAIS Divide and other polar researchers.