Collaborative Research: P2C2--Reconstructing North Pacific Climate Variability Using a Multi-Millennial Tree-Ring Resource for Glacier Bay, Alaska

合作研究：P2C2——利用阿拉斯加冰川湾的千年树轮资源重建北太平洋气候变化

• 批准号: 0902749
• 负责人: Rosanne D'Arrigo
• 金额: $ 9.92万
• 依托单位: Columbia 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 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0902749&HistoricalAwards=false
• 关键词: Collaborative; Research; P2C2; Reconstructing; North

Funding is provided to develop a multi-millennial tree-ring record of past climate and glacier activity over the last 10,000 years for the North Pacific Rim and northern North America by using existing tree-ring samples and new samples from Glacier Bay National Park and Preserve. The scientific goal is to develop a greater understanding of North Pacific climate variability to aid efforts in predicting western North American climate on annual to multi-decadal time scales.The researchers will pursue a series of hypotheses to guide their research, namely: 1) the recent period of anthropogenic change has been unique relative to the Holocene North Pacific thermal history of the past several millennia; 2) multi-decadal and longer-term North Pacific climate variability does not reflect a true dynamical mode, but instead results from the interaction of different modes of variation (e.g. ~20 and 50 year cycles) that can combine to produce such shifts; 3) both internal (North Pacific) and external (e.g. solar) forcings have significantly impacted North Pacific climate over the past several millennia; 4) there is a millennial-scale rhythm to North Pacific ocean-atmosphere climate variability; and 5) robust linkages exist between North Pacific and tropical climate with regards to regime shifts and other features, reflecting coupled atmosphere-ocean modes of variability.The broader impacts involve supporting undergraduate and graduate students as well as providing new data on a region considered to be a bellwether of changing climate.

提供了资金，以在过去10，000年中为北太平洋边缘和北美北美的过去10，000年来开发过去气候和冰川活动的多千年树环记录，并使用现有的树环样本和冰川湾国家公园和保护区的新样品。科学的目标是对北太平洋气候变化有了更深入的了解，以帮助预测西部北美气候在年度至多年时间尺度上进行努力。研究人员将追求一系列假设来指导他们的研究，即：1）最近的人类学变化与过去几个千年的北太平洋热史相对于北太平洋的北太平洋热史，是独一无二的。 2）多年和长期北太平洋气候变异性并不能反映出真正的动态模式，而是由于不同变化模式的相互作用（例如〜20年和50年的周期）的相互作用，可以结合起来产生这种转移； 3）在过去的几千年中，内部（北太平洋）和外部（例如太阳能）的强迫都对北太平洋的气候产生了重大影响； 4）北太平洋 - 大气气候变化有千禧一代的节奏； 5）北太平洋与热带气候之间存在着牢固的联系在政权转移和其他特征方面，反映了耦合的大气 - 海洋模式的可变性模式。更广泛的影响涉及支持本科生和研究生，并为被认为是变化气候的领域的地区提供新数据。