Collaborative Research: P2C2--Reconstructing Spatiotemporal Climatic Patterns for Northeastern Canada

合作研究：P2C2——重建加拿大东北部时空气候格局

• 批准号: 1602022
• 负责人: Brendan Buckley
• 金额: $ 57.6万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-06-15 至 2021-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1602022&HistoricalAwards=false
• 关键词: Collaborative; Research; P2C2; Reconstructing; Spatiotemporal

This collaborative project generally aims to generate new tree-ring data from Blue Intensity (BI is proposed as a direct proxy for density) and three anatomical measurements of cell number (CN), lumen diameter (LD) and cell wall thickness (CWT) all of which have proposed links to climate. New tree-ring samples will be collected along a latitudinal transect to fill a large spatial gap in paleoclimatic data and potentially allow the inference of spatial shifts and patterns in climatic variability over the past several centuries. This transect extends from southern, coastal to near-coastal sites in Newfoundland and southeastern Labrador to the Mealy Mountains Park and Reserve in central Labrador, and to latitudinal treeline near Napaktok Fjord north of Nain and outlier sites just to the north. These new collections will be used to update existing datasets and better quantify past climate and environmental variability across space and time and extend the record into the Medieval Climate Anomaly.The climate of Labrador and Newfoundland is largely determined by the prevailing western North Atlantic's atmosphere-ocean dynamics including effects of the Labrador Sea, a key component of the Earth's thermohaline circulation system. Other influences include dominant climate modes such as the North Atlantic Oscillation (NAO). Reconstructions of northwest Atlantic sector sea surface temperatures (SST), land temperature, sea-ice extent and hydroclimate, as well as analyses of instrumental and reanalysis data, could potentially improve the current knowledge of climate change in this highly dynamic region. The overarching research questions are: 1) What are the underlying causes and patterns of long-term climate variability across the region? 2) How does the climate of the anthropogenic period compare with prior centuries?This project involves the potential for a unique and potentially transformative analytical technique (i.e., Blue Intensity) for exploring climate processes in circumpolar regions. There is also outreach to Labrador's northernmost village of Nain, where communities must cope with severe socioeconomic challenges amid recent climatic extremes.

该协作项目通常旨在从蓝色强度（BI作为密度的直接代理）和三个解剖学测量值（CN），管腔直径（LD）和细胞壁厚（CW​​T）的三个解剖学测量结果中生成新的树环数据。 将沿着纬度样品收集新的树环样品，以填补​​古气候数据中的较大空间间隙，并可能允许在过去几个世纪中推断气候变异性中的空间变化和模式。该横断面从沿海，沿海地区到纽芬兰和拉布拉多东南部的近型地点，再到拉布拉多中部的Mealy山区公园，再到北部和北部位于北部的napaktok峡湾附近的纬度林线。这些新收藏将用于更新现有数据集，并更好地量化跨时时间和时间的气候和环境变化，并将记录扩展到中世纪的气候异常中。拉布拉多和纽芬兰的气候在很大程度上取决于盛行的北大街西部西部地区西部大气层西部大气层动力学，包括Labrador Sea的影响，包括Labrador Sea的影响，是地球循环的一个圆形组成部分。 其他影响包括北大西洋振荡等主要气候模式（NAO）。 西北大西洋地区海面温度（SST），陆地温度，海冰范围和氢化气候的重建，以及对工具性和重新分析数据的分析，可以有可能改善这个高度动态的区域中当前对气候变化的知识。总体研究问题是：1）整个地区长期气候变异性的基本原因和模式是什么？ 2）人为时期的气候与前几个世纪相比如何？该项目涉及进行独特且潜在的转化分析技术（即蓝色强度），以探索循环极性区域的气候过程。拉布拉多（Labrador）最北端的纳因（Nain）也有宣传，在最近的气候极端情况下，社区必须应对严重的社会经济挑战。