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

格陵兰岛峰会空气与雪化学关系的季节差异

• 批准号: 9904858
• 负责人: Eric Steig
• 金额: $ 8.87万
• 依托单位: University of Pennsylvania
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-04-01 至 2001-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9904858&HistoricalAwards=false
• 关键词: Seasonal; Differences; Air; Snow; Chemical

The 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.

研究人员建议继续实施1997-98年冬季启动的大气采样计划，并在格陵兰冰盖山顶海拔10，600英尺处进行试点计划。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10万年的年度记录将提供检查自然和人为原因引起的大气变化记录的机会。