IAI Workshop: The Assessment of Present, Past and Future Climate Variability in the Americas from Treeline Environments

IAI 研讨会：从林线环境评估美洲现在、过去和未来的气候变化

• 批准号: 9530427
• 负责人: Brian Luckman
• 金额: $ 4.95万
• 依托单位: University of Western Ontario
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-07-01 至 1998-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9530427&HistoricalAwards=false
• 关键词: IAI; Workshop; Assessment; Present; Past

9530427 Luckman Treelines are critical, climate-sensitive, ecotones in mountain areas that have been the focus of many studies of environmental change. Understanding the present and former dynamics of these environments is crucial to the interpretation of these records. The adoption of PEP-I transect concept for the Americas by IGBP-PAGES offers unparalleled opportunities for collaborative studies by scientists working at or near treelines along the length of the American Cordillera. This proposal requests IAI Start-Up Grant Phase I funding to hold a workshop in Jasper, Alberta, Canada in late September- early October 1996, to focus on treeline environments along the American Cordillera. The meeting will bring together scientists from IAI member countries who are experts in a wide range of fields: paleoecology, dendrochronology, and climatology. This mix will allow the group to formulate a science plan for the understanding of the dynamics of present treeline environments, and the reconstruction of environmental and climate changes at treeline sites. The participants will review the present information base on treeline environments along the American Cordillera and discuss the formulation of collaborative, comparative studies, that will evaluate and benchmark the climate signals found at modern treeline sites and determine the response of this sensitive environment to recent climate variation; develop a network of comparable high resolution proxy climate series that show internal climate variation at treeline over the last ca 1000 years for key localities; and utilize these data to examine the local and regional patterns of internal and longer term climate variability to develop data on key temporal and spatial patterns of forcing functions. This meeting will lead to the development of a series of collaborative, international, interdisciplinary research proposals for Phase II of the IAI Start-Up Grants that implement this scientific agenda. %%% Treelines are critical, climate-sensiti ve mountain areas that have been the focus of many studies of environmental change. Understanding the present and former dynamics of these environments is crucial to the interpretation of these records. The adoption of the Pole-Equator-Pole (PEP-I) transect concept for the Americas by the International Geosphere Biosphere Programme's "Past Global Changes Program" (IGBP-PAGES) offers unparalleled opportunities for collaborative studies by scientists working at or near treelines along the length of the American Cordillera. This proposal requests IAI Start-Up Grant Phase I funding to hold a meeting in Jasper, Alberta, Canada in late September- early October 1996 and to be focused on treeline environments along the American Cordillera. The meeting will bring together scientists from IAI member countries who are experts in a wide range of fields: paleoecology, dendrochronology, and climatology. This mix will allow the group to formulate a science plan for the understanding of the dynamics of present treeline environments, and the reconstruction of environmental and climate changes at treeline sites. This meeting is planned to lead to the development of a series of collaborative, international, interdisciplinary Phase II IAI Start-Up Grants research that implement this scientific agenda. These proposals will promote and enhance the IAI scientific goals by fostering collaborative studies by scientists and institutions in several IAI member states that share common interests in mountain environments and climate change. They will also bring together and provoke interaction among a diverse group of scientific specialists in the earth, life and physical sciences who focus on the same environment in quite different ways. An additional outcome of the meeting will be a proceedings volume ("Treeline Environments of the Americas") that will summarize the information and discussion presented at the meeting. Participants of this proposal are from the following IAI countries: Argentina; Bolivia; Canada ; Chile; the United States; and Venezuela. These countries are Member States of the IAI, an initiative to stimulate cooperative research on global change issues in the Americas. The National Science Foundation is the designated U.S. Government to carry out U.S. responsibilities within the IAI. ***

9530427 Luckman树木是关键的，气候敏感，生态交错区的山区，一直是许多研究的重点环境变化。 了解这些环境的现在和以前的动态对解释这些记录至关重要。 IGBP-PAGES对美洲采用PEP-I样带概念，为在美洲科迪勒拉山脉沿着的树木线或树木线附近工作的科学家提供了无与伦比的合作研究机会。 这项建议要求国际建筑学会第一期启动赠款提供资金，以便于1996年9月底至10月初在加拿大阿尔伯塔的碧玉举办一次讲习班，重点讨论沿着美国科迪勒拉山脉的树木环境。 这次会议将汇集来自IAI成员国的科学家，他们是广泛领域的专家：古生态学，树木年代学和气候学。 这种组合将使该小组能够制定一项科学计划，以了解目前树木环境的动态，并重建树木地点的环境和气候变化。 与会者将审查关于沿着美洲山脉树木环境的现有信息库，并讨论如何制定合作性比较研究，以评价和确定在现代树木地点发现的气候信号的基准，并确定这一敏感环境对最近气候变化的反应;建立一个可比较的高分辨率代用气候系列网络，显示关键地点在过去约1000年里树线的内部气候变化;并利用这些数据来研究本地和区域的内部和长期气候变率模式，以开发关于强迫函数的关键时间和空间模式的数据。 这次会议将导致一系列的合作，国际，跨学科的研究建议的IAI启动赠款，实施这一科学议程的第二阶段的发展。 树木线是重要的，气候敏感的山区，一直是许多环境变化研究的重点。 了解这些环境的现在和以前的动态对解释这些记录至关重要。 国际地圈生物圈方案的“过去全球变化方案”（IGBP-PAGES）采用了美洲的极-赤道-极（PEP-I）样带概念，为在沿沿着美洲山脉的树木线上或附近工作的科学家提供了无与伦比的合作研究机会。 这项建议要求国际建筑学会第一阶段启动赠款提供资金，于1996年9月底至10月初在加拿大阿尔伯塔的碧玉举行一次会议，重点讨论沿着美国科迪勒拉山脉的树木线环境。 这次会议将汇集来自IAI成员国的科学家，他们是广泛领域的专家：古生态学，树木年代学和气候学。 这种组合将使该小组能够制定一项科学计划，以了解目前树木环境的动态，并重建树木地点的环境和气候变化。 这次会议计划导致一系列合作，国际，跨学科的第二阶段IAI启动赠款研究，实施这一科学议程的发展。 这些建议将通过促进在山区环境和气候变化方面有共同利益的若干国际科学家协会成员国的科学家和机构的合作研究，促进和加强国际科学协会的科学目标。 它们还将汇集地球、生命和物理科学领域的各种科学专家，并促进他们之间的互动，这些专家以完全不同的方式关注同一环境。 会议的另一项成果将是一本会议记录卷（“美洲的树木线环境”），其中将概述会上介绍的信息和讨论情况。 这项建议的参与者来自以下国际航空工业协会国家：阿根廷、玻利维亚、加拿大、智利、美国和委内瑞拉。 这些国家都是国际气候变化研究所的成员国，该研究所是一项旨在促进美洲对全球变化问题进行合作研究的倡议。 美国国家科学基金会是美国政府指定在IAI内履行美国职责的机构。 ***