Collaborative Research: Linking sea ice and snow cover changes to Greenland mass balance through stratospheric and tropospheric pathways
合作研究:通过平流层和对流层路径将海冰和积雪变化与格陵兰岛质量平衡联系起来
基本信息
- 批准号:1901352
- 负责人:
- 金额:$ 29.98万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2019
- 资助国家:美国
- 起止时间:2019-09-01 至 2022-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Melting of the Greenland ice sheet is already the largest single contributor to sea level rise, and the rate of melt is accelerating. At the same time, the Arctic as a whole is experiencing unprecedented changes and setting new records, including the decline of Arctic sea ice cover, the decline and early snowmelt onset of Northern Hemisphere snow cover, and an overall warming at a rate more than double anywhere else on the planet. Studying and understanding the mechanisms linking the different Arctic components (Greenland, snow cover, and sea ice in the case of this research) and how, in turn, their changes are related to and driven by the atmosphere is fundamental to capture the physical processes driving the changes. This is, indeed, one of the key aspects to considerably improve our skills in estimating the future evolution of the Arctic under different warming scenarios and in projecting future sea level rise.This research is quantifying the relationships between sea ice, snow cover, atmospheric circulation changes and mass changes over the Greenland ice sheet through a combination of observational and modeling tools. These include in situ observations of sea ice cover and snow extent as well as remote sensing products and estimates of atmospheric circulation changes and outputs from climate models. We also use artificial intelligence (e.g., neural networks) to examine relationships between climate, atmospheric patterns and Greenland changes. Ultimately, this research is testing the hypothesis that atmospheric circulation changes associated with sea ice and snow cover extent variability control the mass balance of the Greenland ice sheet by modulating snowfall and surface melting. This research is also providing new insights on the linkages between the Arctic and mid-latitudes and how sea ice and snow cover changes might affect weather patterns outside the Arctic, including the United States.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
格陵兰冰盖的融化已经是海平面上升的最大单一因素,而且融化速度正在加快。 与此同时,整个北极正在经历前所未有的变化并创下新纪录,包括北极海冰面积减少、北半球积雪减少和融雪提前、整体变暖速度增加一倍以上地球上的任何其他地方。 研究和理解北极不同组成部分(本研究中的格陵兰岛、积雪和海冰)之间的联系机制,以及它们的变化如何与大气相关并由大气驱动,对于捕获驱动的物理过程至关重要的变化。这确实是显着提高我们在不同变暖情景下估计北极未来演变和预测未来海平面上升技能的关键方面之一。这项研究正在量化海冰、积雪和大气环流之间的关系通过观测和建模工具的结合,格陵兰冰盖的变化和质量变化。这些包括对海冰覆盖和积雪范围的现场观测以及遥感产品以及对大气环流变化和气候模型输出的估计。我们还使用人工智能(例如神经网络)来研究气候、大气模式和格陵兰岛变化之间的关系。最终,这项研究正在检验这样一个假设:与海冰和积雪范围变化相关的大气环流变化通过调节降雪和表面融化来控制格陵兰冰盖的质量平衡。这项研究还为北极与中纬度地区之间的联系以及海冰和积雪变化如何影响北极以外地区(包括美国)的天气模式提供了新的见解。该奖项反映了 NSF 的法定使命,并被认为是值得的通过使用基金会的智力优势和更广泛的影响审查标准进行评估来提供支持。
项目成果
期刊论文数量(6)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Divergent consensuses on Arctic amplification influence on midlatitude severe winter weather
- DOI:10.1038/s41558-019-0662-y
- 发表时间:2020-01-01
- 期刊:
- 影响因子:30.7
- 作者:Cohen, J.;Zhang, X.;Yoon, J.
- 通讯作者:Yoon, J.
How do intermittency and simultaneous processes obfuscate the Arctic influence on midlatitude winter extreme weather events?
- DOI:10.1088/1748-9326/abdb5d
- 发表时间:2021-01
- 期刊:
- 影响因子:6.7
- 作者:J. Overland;T. Ballinger;J. Cohen;J. Francis;E. Hanna;Ralf Jaiser;Baek‐Min Kim;Seong‐Joong Kim
- 通讯作者:J. Overland;T. Ballinger;J. Cohen;J. Francis;E. Hanna;Ralf Jaiser;Baek‐Min Kim;Seong‐Joong Kim
Four distinct Northeast US heat wave circulation patterns and associated mechanisms, trends, and electric usage
- DOI:10.1038/s41612-021-00186-7
- 发表时间:2021-05-27
- 期刊:
- 影响因子:9
- 作者:Agel, Laurie;Barlow, Mathew;Cohen, Judah
- 通讯作者:Cohen, Judah
The Impact of Split and Displacement Sudden Stratospheric Warmings on the Troposphere
- DOI:10.1029/2020jd033989
- 发表时间:2021-04
- 期刊:
- 影响因子:0
- 作者:Ian P. White;C. Garfinkel;J. Cohen;M. Jucker;Jian Rao
- 通讯作者:Ian P. White;C. Garfinkel;J. Cohen;M. Jucker;Jian Rao
Variability and Changes of Unfrozen Soils Below Snowpack
- DOI:10.1029/2021gl095354
- 发表时间:2022
- 期刊:
- 影响因子:5.2
- 作者:Lun Gao;A. Ebtehaj;J. Cohen;J. Wigneron
- 通讯作者:Lun Gao;A. Ebtehaj;J. Cohen;J. Wigneron
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Judah Cohen其他文献
Judah Cohen的其他文献
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{{ truncateString('Judah Cohen', 18)}}的其他基金
Collaborative Research: NSF-BSF--Tropospheric Response to Zonal Asymmetry of the Stratospheric Polar Vortex and Its Aapplication to Subseasonal to Seasonal (S2S) Prediction
合作研究:NSF-BSF--平流层极地涡旋纬向不对称性的对流层响应及其在次季节到季节(S2S)预测中的应用
- 批准号:
2140909 - 财政年份:2022
- 资助金额:
$ 29.98万 - 项目类别:
Standard Grant
Collaborative Research: Influences of Amplified Arctic Warming on Extreme Weather in Midlatitudes
合作研究:北极变暖加剧对中纬度地区极端天气的影响
- 批准号:
2115072 - 财政年份:2021
- 资助金额:
$ 29.98万 - 项目类别:
Standard Grant
Collaborative Research: Structure and Influence of Coherent Vertical Pulses of Wave Activity Flux in Observations and Models, from Daily to Seasonal Timescales
合作研究:从每日到季节时间尺度的观测和模型中波浪活动通量的相干垂直脉冲的结构和影响
- 批准号:
1657748 - 财政年份:2017
- 资助金额:
$ 29.98万 - 项目类别:
Standard Grant
The Combined Influence of sea ice and snow cover on Northern Hemisphere Atmospheric Climate Variability
海冰和积雪对北半球大气气候变化的综合影响
- 批准号:
1504361 - 财政年份:2015
- 资助金额:
$ 29.98万 - 项目类别:
Standard Grant
Collaborative Research: Combined Influence of Snow Cover and El Nino/Southern Oscillation (ENSO) on North African/Mediterranean Temperature and Precipitation
合作研究:积雪和厄尔尼诺/南方涛动(ENSO)对北非/地中海气温和降水的综合影响
- 批准号:
1303647 - 财政年份:2013
- 资助金额:
$ 29.98万 - 项目类别:
Standard Grant
Collaborative Research: Critical Issues on Cold Region Precipitation Characteristics
合作研究:寒地降水特征关键问题
- 批准号:
1060323 - 财政年份:2011
- 资助金额:
$ 29.98万 - 项目类别:
Standard Grant
Collaborative Research: Analysis and attribution of changes in Siberian hydroclimate and implications for the future
合作研究:西伯利亚水文气候变化的分析和归因及其对未来的影响
- 批准号:
0909457 - 财政年份:2009
- 资助金额:
$ 29.98万 - 项目类别:
Standard Grant
Troposphere-stratosphere coupling and linkages to high latitude climate variability
对流层-平流层耦合及其与高纬度气候变率的联系
- 批准号:
0909459 - 财政年份:2009
- 资助金额:
$ 29.98万 - 项目类别:
Standard Grant
Collaborative Research: Linkages in Winter-Time Climate Variability and the Basis for Climate Predictability in the North Atlantic Sector
合作研究:冬季气候变率的联系和北大西洋地区气候可预测性的基础
- 批准号:
0443512 - 财政年份:2005
- 资助金额:
$ 29.98万 - 项目类别:
Continuing Grant
Collaborative Research: The Influence of Snow Cover on Northern Hemisphere Climate Variability
合作研究:积雪对北半球气候变化的影响
- 批准号:
0124904 - 财政年份:2002
- 资助金额:
$ 29.98万 - 项目类别:
Continuing Grant
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