Investigation of Photochemical Transformation within Snow and Their Effect on Snow and Atmospheric Composition

雪内光化学转化及其对雪和大气成分影响的研究

• 批准号: 9907330
• 负责人: Mary Albert
• 金额: $ 16.62万
• 依托单位: Department of Army Cold Regions Research & Engineering Lab
• 依托单位国家: 美国
• 项目类别: Interagency Agreement
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-09-01 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9907330&HistoricalAwards=false
• 关键词: Investigation; Photochemical; Transformation; within; Snow

ABSTRACTOPP-9907197 OPP-9907469 OPP-9907330HONRATH, RICHARD DIBB, JACK ALBERT, MARYMICH. TECH. UNIVERSITY UNIVERSITY NH CRRELOPP-9907376 OPP-9907623 OPP-9907434SHEPSON, PAUL BLAKE, DONALD ANASTASIO, CORTPURDUE UNIVERSITY UC-IRVINE UC-DAVISOPP-9907314STEFFAN, CONRADUNIVERSITY OF COLORADOThe PIs propose a field sampling program at the summit of the Greenland ice cap to examine the effects of energy from the sun on the chemistry of organic compounds contained in the interstitial air trapped in snow. The results of the research will be used to determine if the chemistry of the air/snow changes through time in response to fluctuations in light energy penetrating the snow. The study is critical to developing a method for interpreting ice core records for the history of atmospheric chemistry in the past. The photochemical process under study could lead to more accurate interpretations of past atmospheric conditions and provide better estimates of both natural and anthropogenic impacts on the atmosphere from changing climate or human activities. The results of the research will also provide evidence of the role of the Greenland ice sheet on modern atmospheric chemistry that will be critical to understanding how high-latitude processes affect the atmosphere.

摘要-9907197 理查德·霍拉斯 Dibb，Jack Albert，Marymich. TECH.大学 新罕布什尔大学-9907376 保罗·谢普森 唐纳德·阿纳斯塔西奥·布莱克，科特普渡大学 UC-Irvine UC-DAVISopp-9907314 STEFAN，科罗拉多大学PI提议在格陵兰冰盖顶部进行一项实地采样计划，以检查太阳能对雪中间隙空气中所含有机化合物化学成分的影响。 研究结果将用于确定空气/雪的化学性质是否会随着时间的推移而变化，以响应穿透雪的光能波动。 这项研究对于开发一种解释过去大气化学历史的冰芯记录的方法至关重要。 研究中的光化学过程可以更准确地解释过去的大气状况，并更好地估计气候变化或人类活动对大气的自然和人为影响。 研究结果还将提供格陵兰冰盖对现代大气化学作用的证据，这对于了解高纬度过程如何影响大气至关重要。