Collaborative Research: Investigating the Role of Mesoscale Processes and Ice Dynamics in Carbon and Iron Fluxes in a Changing Amundsen Sea (INSPIRE)

合作研究：研究中尺度过程和冰动力学在变化的阿蒙森海碳和铁通量中的作用（INSPIRE）

基本信息

批准号：
1443657
负责人：
Pierre St-Laurent
金额：
$ 15.5万
依托单位：
Old Dominion University Research Foundation
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2015
资助国家：
美国
起止时间：
2015-07-15 至 2018-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1443657&HistoricalAwards=false
关键词：
Collaborative Research Investigating Role Mesoscale

项目摘要

The Amundsen Sea, in the remote Pacific sector of the Southern Ocean, is one of the least well studied Antarctic continental shelf regions. It shares characteristics in common with other Antarctic ice shelf regions, but exhibits unique aspects also. The Amundsen Sea Polynya (ASP), an open region at the base of several of the terminal glaciers draining the West Antarctic Ice sheet exhibits: 1) large intrusions of heat delivered from the warming modified circumpolar deep water (mCDW) rising up onto the continental shelf, 2) the fastest melting ice sheets in Antarctica, 3) the most productive coastal polynya (161 g C m-2) together with a significant atmospheric CO2 sink, and 4) some of the most rapidly declining regions of seasonal off-shore sea ice on Earth. Following on from an earlier oceanographic field program, the Amundsen Sea Polynya International Research Expedition (ASPIRE; 2011), this study seeks to better synthesize and model the relative contributions of both physical ocean-ice linkages and biological production and carbon export terms and to compare these with other circumpolar Antarctic regions. A central feature will be the use of a regionally coupled physical-biogeochemical model to follow the dynamics of the large phytoplankton blooms that occur annually in the Amundsen Sea Polyna. This study will provides a means to locate the Amundsen Sea properties along the continuum of Antarctic ice shelf systems, and to understand how these system might change in response to climate change.Pedagogical techniques will be used to provide educational outreach for three distinct target populations: secondary students, pre-service science teachers, and in-service science teachers. Partnerships will be developed with science teacher educators to implement the STEM career-development lessons in undergraduate and graduate level science teachereducation courses.

阿蒙森海位于南大洋偏远的太平洋区域，是研究最少的南极大陆架区域之一。它与其他南极冰架区域具有共同的特征，但也表现出独特的方面。阿蒙森海冰间湖 (ASP) 是位于南极西部冰盖的几条终端冰川底部的开放区域，它表现出：1) 变暖的改良环极地深水 (mCDW) 带来的热量大量侵入，上升到大陆上大陆架，2) 南极洲融化最快的冰盖，3) 生产力最高的沿海冰间湖 (161 g C m-2) 以及重要的大气二氧化碳汇，以及 4)地球上季节性近海海冰减少最快的一些地区。继早期的海洋学实地计划阿蒙森海冰间湖国际研究考察（ASPIRE；2011）之后，本研究旨在更好地综合和模拟物理海冰联系以及生物生产和碳输出项的相对贡献，并比较这些与其他环极地南极地区。一个核心特征是使用区域耦合的物理-生物地球化学模型来跟踪每年在阿蒙森海波利亚纳发生的大型浮游植物繁殖的动态。这项研究将提供一种方法来定位沿南极冰架系统连续体的阿蒙森海特性，并了解这些系统如何因气候变化而发生变化。教学技术将用于为三个不同的目标人群提供教育推广：中学生、职前科学教师和在职科学教师。将与科学教师教育工作者建立合作伙伴关系，在本科和研究生水平的科学教师教育课程中实施 STEM 职业发展课程。