The Role of Wave-sea Ice Floe Interactions in Recent Antarctic Sea Ice Change

波浪-海浮冰相互作用在近期南极海冰变化中的作用

• 批准号: 1643431
• 负责人: Cecilia Bitz
• 金额: $ 41.59万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-04-01 至 2022-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1643431&HistoricalAwards=false
• 关键词: Role; Wave; sea; Ice; Floe

Sea-ice coverage surrounding Antarctica has expanded during the era of satellite observations, in contrast to rapidly shrinking Arctic sea ice. Most climate models predict Antarctic sea ice loss, rather than growth, indicating that there is much to learn about Antarctic sea ice in terms of its natural variability, processes and interactions affecting annual growth and retreat, and the impact of atmospheric factors such increasing greenhouse gases and stratospheric ozone depletion. This project is designed to improve model simulations of sea ice and examine the role of wind and wave forcing on changes in sea ice around Antarctica.This project seeks to explain basic interactions of the coupled atmosphere, ocean, and ice dynamics in the Antarctic climate system, especially in the region near the sea ice edge. The summer evolution of sea ice cover and the near surface heat exchange of atmosphere and ocean depend on the geometric distribution of floes and the open water surrounding them. The distribution of floes has the greatest impact on the sea ice state in the marginal seas, where the distribution itself can vary rapidly. This project would develop and implement a model of sea ice floes in the Los Alamos sea ice model, known as CICE5. This sea ice component would be coupled to the third generation WaveWatch model within the Community Climate System Model Version 2. The coupled model would be used to study sea ice-wave interactions and the role of modeling sea ice floes in the Antarctic. The broader impacts of this project include outreach, support of female scientists, and improvement of the sea-ice codes in widely used climate models.

在卫星观测时代，南极洲周围的海冰覆盖范围扩大了，而北极海冰却在迅速缩小。大多数气候模式预测的是南极海冰的损失，而不是增长，这表明在南极海冰的自然变率、影响年增长和退缩的过程和相互作用以及温室气体增加和平流层臭氧耗损等大气因素的影响方面，还有很多需要了解的地方。该项目旨在改进海冰的模式模拟，并研究风和波浪对南极洲周围海冰变化的影响。本项目旨在解释南极气候系统中大气、海洋和冰动力学耦合的基本相互作用，特别是在海冰边缘附近地区。海冰覆盖的夏季演变以及大气和海洋的近地表热交换取决于浮冰及其周围开阔水域的几何分布。在边缘海域，浮冰的分布对海冰状态的影响最大，浮冰的分布本身变化很快。该项目将在洛斯阿拉莫斯海冰模型（称为CICE5）中开发和实施海冰浮冰模型。这个海冰组件将与社区气候系统模型版本2中的第三代WaveWatch模型相耦合。该耦合模型将用于研究海冰与波浪的相互作用，以及模拟南极海冰的作用。该项目的更广泛影响包括外联、女性科学家的支持，以及在广泛使用的气候模型中改进海冰代码。

项目成果

High‐Frequency Sea Ice Variability in Observations and Models

观测和模型中的高频海冰变化

• DOI: 10.1029/2020gl092356
• 发表时间: 2021
• 期刊: Geophysical Research Letters
• 影响因子: 5.2
• 作者: Blanchard‐Wrigglesworth, Edward;Donohoe, Aaron;Roach, Lettie A.;DuVivier, Alice;Bitz, Cecilia M.
• 通讯作者: Bitz, Cecilia M.

An Emergent Sea Ice Floe Size Distribution in a Global Coupled Ocean-Sea Ice Model

• DOI: 10.1029/2017jc013692
• 发表时间: 2018-06-01
• 期刊: JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
• 影响因子: 3.6
• 作者: Roach, Lettie A.;Horvat, Christopher;Bitz, Cecilia M.
• 通讯作者: Bitz, Cecilia M.

ic4m1

ic4m1

• DOI: 10.5281/zenodo.6213441
• 发表时间: 2022
• 期刊: Zenodo
• 作者: Cooper, Vincent

Model Output: Nemo-Cice With An Emergent Sea Ice Floe Size Distribution

模型输出：Nemo-Cice 具有新兴海浮冰尺寸分布

• DOI: 10.5281/zenodo.1193930
• 发表时间: 2018
• 期刊: Zenodo
• 作者: A., Lettie Roach

Estimating the sea ice floe size distribution using satellite altimetry: theory, climatology, and model comparison

• DOI: 10.5194/tc-13-2869-2019
• 发表时间: 2019-11-08
• 期刊: CRYOSPHERE
• 影响因子: 5.2
• 作者: Horvat, Christopher;Roach, Lettie A.;Shepherd, Andrew
• 通讯作者: Shepherd, Andrew