Seasonal Differences in Air-Snow Chemical Relationships at Summit, Greenland

摘要-9813312 粤ICP备09013442号-1 DIBB，JACK 罗杰·巴列斯 布雷克，新罕布什尔大学，亚利桑那大学，加利福尼亚大学-9813441 电话-9813549阿尔伯特，玛丽 乔纳森·努萨克雷尔·卡尔 WIOPP大学-9813462 联系人-9813333 DAVIDSON，CLIFF 研究人员建议继续进行1997年至1998年冬季启动的大气采样计划，在格陵兰冰帽山顶海拔10,600英尺的地方进行试点。1997-98年的试验项目是在冬季测量大气化学的第一次尝试，也是NSF在冬季条件下支持Summit站科学小组的第一次尝试。 试点项目的科学成功和后勤经验教训证明，拟议的winterover采样计划的延续是一种可行的方法，用于确定控制大气化学转移到冰芯记录的变量。将利用降雪记录校准大气化学记录，以确定如何将大气记录转换为冰记录。 最终的目标是利用格陵兰冰盖二号（GISP 2）项目冰芯的样本来解释过去的大气化学，这些样本是以前在该地点收集的。GISP 2冰芯的10万年的年度记录将提供机会来研究自然和人为原因造成的大气变化记录。

ABSTRACTOPP-9813312 OPP-9813442 OPP-9813550DIBB, JACK BALES, ROGER BLAKE, DONALDUNIVERSITY OF NH UNIVERSITY OF AZ UNIVERSITY OF CAOPP-9813441 OPP-9813549ALBERT, MARY KAHL, JONATHANUSACREEL UNIVERSITY OF WIOPP-9813462 OPP-9813333DAVIDSON, CLIFF CURRIE, LLOYDCARNEGIE MELLON UNIVERSITY NATIONAL INST. OF SCIENCE AND TECHNOLOGYThe investigators propose to continue an atmospheric sampling program that was initiated in winter 1997-98 with a pilot program at 10,600 feet altitude at the summit of the Greenland Ice Cap. The 1997-98 pilot project was the first attempt to measure atmospheric chemistry during the winter season and the first attempt by NSF to support a science team at the Summit station during winter conditions. The scientific success of the pilot project and the logistics lessons learned prove that the proposed continuation of a winterover sampling program is a viable method for determining the variables that control the transfer of the atmospheric chemistry into the ice core record. The calibration of the atmospheric chemical record with the snowfall record will be used to determine how the atmospheric record is transferred into the ice record. The ultimate goal is to interpret the past atmospheric chemistry using samples of the Greenland Ice Sheet Two (GISP2) project ice core that was collected previously at the site. The100,000 year annual record of the GISP2 ice core will provide the opportunity to examine the record of atmospheric changes from both natural and anthropogenic causes.