Collaborative Research: Asian Ice Core Array (AICA)--Reconstruction of Past Physical and Chemical Climate over Asia

合作研究：亚洲冰芯阵列（AICA）--重建亚洲过去的物理和化学气候

• 批准号: 0754644
• 负责人: Paul Mayewski
• 金额: $ 41.53万
• 依托单位: University of Maine
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-08-15 至 2011-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0754644&HistoricalAwards=false
• 关键词: Collaborative; Research; Asian; Ice; Core

Funding is provided to help the researchers build on success using ice cores for understanding past physical and chemical climate change from Antarctica, Arctic, North Pacific and Asia by analyzing and interpreting a new array of Asian ice cores. The researchers plan to use five existing ice cores and collect one new ice core to enhance the reconstruction of environmental conditions over Asia. The primary research questions for the Asian Ice Core Array (AICA) research include: (1) Asian climate variability - How do major Asian circulation features (i.e., Asian monsoon, Westerlies, polar air masses, Siberian and Tibetan Highs) vary on annual to longer scales? What factors (i.e., solar variability, volcanic activity, greenhouse gases) control changes in the major circulation features impacting Asia? What is the association between Asian climate and global circulation features? Can Asian climate be simulated and predicted from the state of past atmospheric circulation patterns (analog modeling)? How does the interaction between tropical and extra-tropical circulation impact climate over Asia? What are the regional climatic changes to be expected in near future based on trends? Are Asian climate change events related to climate change in other regions?(2) Environmental change over Asia - How have natural versus anthropogenic sources for chemical species notably sulfate, nitrate, and select heavy metals and trace and major elements varied in the atmosphere over central Asia? Are spatial and temporal variations in contaminants related to changes in contaminant source areas or production? Have changes in atmospheric circulation impacted distribution of chemical species in the atmosphere over central Asia?Scientifically, ice cores from Asian glaciers could provide a source of high-resolution records of seasonal to millennial climate dynamics and atmospheric chemistry. This is important because the Eurasian continent is the largest landmass in the World and exerts substantial influence on atmospheric and terrestrial systems and the 2.5 billion people living in the region. Changes in environment over this region could have dramatic impacts on humans and ecosystems. Unpredictable changes in water resources and desertification over this heavily populated region may have significant global consequences. The results from AICA could be of interest to climatologists, paleoclimatologists, atmospheric chemists, geochemists, climate modelers, solar-terrestrial physicists, and environmental statisticians. Educationally, the research project will support two PhD students as well as several undergraduate students for three years. This will help provide a rich research experience for the graduate and undergraduate students. Also, this project has strong ties to colleagues in China and Europe and offers intellectual and financial leveraging to aid in the success of the project.

提供资金，以帮助研究人员利用冰芯的成功，通过分析和解释一系列新的亚洲冰芯，了解南极洲，北极，北太平洋和亚洲过去的物理和化学气候变化。研究人员计划利用五个现有的冰芯并收集一个新的冰芯，以加强亚洲环境条件的重建。亚洲冰芯阵列（AICA）研究的主要研究问题包括：（1）亚洲气候变率-亚洲主要环流特征（即，亚洲季风，西风，极地气团，西伯利亚和西藏高压）在年度到更长的尺度上变化？哪些因素（即，太阳活动、火山活动、温室气体）控制着影响亚洲的主要环流特征的变化？亚洲气候和全球环流特征之间有什么联系？亚洲气候能从过去的大气环流模式状态模拟和预测吗？热带和热带外环流之间的相互作用如何影响亚洲的气候？根据趋势预测，在不久的将来，区域气候将发生什么变化？亚洲气候变化事件是否与其他地区的气候变化有关？(2)亚洲上空的环境变化-中亚上空大气中化学物质特别是硫酸盐、硝酸盐和某些重金属以及微量和主要元素的自然来源与人为来源有何不同？污染物的空间和时间变化是否与污染物源区或生产的变化有关？大气环流的变化是否影响了中亚上空大气中化学物质的分布？从科学角度来看，亚洲冰川的冰芯可以提供季节性到千年气候动态和大气化学的高分辨率记录。这一点很重要，因为欧亚大陆是世界上最大的大陆，对大气和陆地系统以及生活在该地区的25亿人口产生着重大影响。该地区的环境变化可能对人类和生态系统产生巨大影响。这一人口稠密地区水资源的不可预测的变化和荒漠化可能会产生重大的全球性后果。来自AICA的结果可能对气候学家，古气候学家，大气化学家，地球化学家，气候建模者，日地物理学家和环境统计学家感兴趣。在教育方面，该研究项目将支持两名博士生以及几名本科生三年。这将有助于为研究生和本科生提供丰富的研究经验。此外，该项目与中国和欧洲的同事有着密切的联系，并提供智力和财务杠杆，以帮助项目的成功。