Collaborative Research: P2C2--Ice Core Paleoclimate Records from Combatant Col, British Columbia, Canada

合作研究：P2C2——加拿大不列颠哥伦比亚省战斗上校的冰芯古气候记录

• 批准号: 0902392
• 负责人: Douglas Clark
• 金额: $ 28.11万
• 依托单位: Western Washington University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2013-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0902392&HistoricalAwards=false
• 关键词: Collaborative; Research; P2C2; Ice; Core

Funding is provided to obtain new ice core accumulation records from Combatant Col, Mt. Waddington, in southwestern British Columbia (BC), Canada. Combatant Col is located significantly farther south than other existing ice core sites along the west coast of North America and variations in precipitation tend to be out of phase with those in Alaska and the Yukon. Combatant Col sits at 3000 meters and contains more than 200 meters of ice. The net annual snow accumulation is ~2.5 meters/year and the mean annual temperature -5°C. A 65-meter core from the site shows that clear annual layering is preserved in the geochemistry and in dust and black carbon. The age of the ice near bedrock is estimated to be between 200 years and 1000 years old. It is anticipated that an annually-resolved record of layer thickness will be recovered at the site to allow for a record of snow accumulation covering the last 200-1000 years.The Combatant Col record, in combination with other existing records of precipitation variability along the western margin of North America, will be used to develop an updated and improved reconstruction of precipitation variability in this region over the last 200-1000 years to address fundamental questions about Pacific decadal scale variability.The broader impacts involve supporting an early career female investigator and strengthening international collaborations with researchers from institutions in Canada.This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).

提供资金是为了从加拿大不列颠哥伦比亚省 (BC) 西南部的沃丁顿山 Combatant Col 获取新的冰芯堆积记录。 Combatant Col 的位置比北美西海岸的其他现有冰芯地点更靠南。降水量往往与阿拉斯加的降水量不一致，而育空地区海拔 3000 米，冰层厚度超过 200 米，年平均积雪量约为 2.5 米。温度为 -5°C。该地点的 65 米岩心显示，地球化学以及尘埃和黑碳中保存有清晰的年度分层。基岩附近的冰年龄估计为 200 至 1000 年。预计将在该地点恢复每年解析的层厚记录，以记录过去 200-1000 年的积雪记录。战斗队记录与其他现有记录相结合北美西缘降水变化记录，将用于对该地区过去 200-1000 年的降水变化进行更新和改进重建，以解决有关太平洋年代际尺度变化的基本问题。更广泛的影响包括支持一名早期职业女性研究员，并加强与加拿大机构研究人员的国际合作。该奖项由 2009 年美国复苏和再投资法案（公法 111-5）资助。