Collaborative Research: The Seasonal Response of the Arctic and Global Climate System to Projected Sea Ice Loss within the Context of GHG-induced Climate Change

合作研究：在温室气体引起的气候变化背景下，北极和全球气候系统对预计海冰消失的季节响应

• 批准号: 0902065
• 负责人: Clara Deser
• 金额: $ 67.01万
• 依托单位: University Corporation For Atmospheric Res
• 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 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0902065&HistoricalAwards=false
• 关键词: Collaborative; Research; Seasonal; Response; Arctic

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). The primary goal of this project is to investigate the mechanisms underlying the seasonal response of the climate system to Arctic sea ice loss within the context of anthropogenic climate change. This research will utilize the NCAR Community Climate System Model, version 4 (CCSM4), which is a fully coupled global atmosphere-ocean-cryosphere-land model with terrestrial and oceanic carbon-nitrogen cycling capabilities. The overarching goal of this proposed effort is to investigate the relative roles of sea ice loss versus rising greenhouse gases for changes in the seasonal succession and timing of Arctic processes. This will involve research designed to assess the influence of seasonal sea ice loss on aspects of the marine, terrestrial, and atmospheric systems, with a particular emphasis on the seasonal dependence of the responses. This work will include a series of targeted sensitivity integrations to isolate processes of interest. These experiments will be evaluated within the context of available observations. This project will also assess the integrated effects of these various processes and how they in turn feed back onto the seasonality of Arctic sea ice change. Current and projected changes in the Arctic system have repercussions for the global climate system, Arctic wildlife, and socio-economic activities in the region. Improving our understanding and modeling of the factors affecting the seasonal timing and succession of processes within the Arctic system will allow for improved Arctic and global system predictability. This has a direct impact on the ability of society to anticipate, mitigate, and adapt to future change.

该奖项是根据2009年《美国复苏和再投资法案》(公法111-5)提供资金的。该项目的主要目标是在人为气候变化的背景下调查气候系统对北冰洋海冰减少作出季节性反应的机制。这项研究将利用NCAR社区气候系统模型第4版(CCSM4)，这是一个具有陆地和海洋碳-氮循环能力的完全耦合的全球大气-海洋-冰冻圈-陆地模型。这项拟议努力的首要目标是调查海冰减少和温室气体增加对北极过程季节演替和时间变化的相对作用。这将涉及旨在评估季节性海冰消失对海洋、陆地和大气系统各方面的影响的研究，特别强调响应的季节性相关性。这项工作将包括一系列有针对性的敏感度集成，以隔离感兴趣的过程。这些实验将在现有观测的背景下进行评估。该项目还将评估这些不同过程的综合影响，以及它们如何反过来反馈到北冰洋海冰变化的季节性。北极系统当前和预期的变化对全球气候系统、北极野生动物和该区域的社会经济活动产生了影响。改进我们对影响北极系统内过程的季节性时间安排和演替的因素的理解和建模，将有助于提高北极和全球系统的可预测性。这对社会预测、缓解和适应未来变化的能力有直接影响。