Monitoring Sea Ice Evolution with Ultrawideband Microwave Radiometry in the MoSAIC Campaign
在 MoSAIC 活动中利用超宽带微波辐射测量监测海冰演变
基本信息
- 批准号:1838401
- 负责人:
- 金额:$ 52.6万
- 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:2019-03-01 至 2022-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The evolution of the Arctic is a key question for the future of our planet. One key aspect is to understand how processes in the atmosphere, ocean, and sea ice interact and affect Arctic ocean sea ice behavior and distribution. As part of the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) campaign, this project is deploying an ultra-wideband microwave radiometer to improve the ability to remotely determine sea ice thickness information. The long term measurements of sea ice available from MOSAiC's one year deployment of the RV Polarstern into an Arctic ice floe, combined with the extensive ice, ocean, and atmosphere in-situ measurements to be acquired, provide an optimal environment for sea ice monitoring studies, which in turn enable better models of sea ice evolution. Those models are criticall important to advancing Arctic system science and predicting the future of the Arctic. Student training will also provide societal impact by preparing the next generation of researchers in polar science and observation.The difficult conditions of the Arctic along with its spatially heterogeneous forcing motivate remote Earth observations from satellites or airborne platforms. Remote sensing systems have proven to be effective in monitoring sea ice extent and fractional cover, as well as sea ice thickness and type to a lesser extent. Current L-band (1.4-GHz) microwave radiometers and laser altimeters have limited sensitivity to ice thickness in the range from 0.5 to 2 meters, which is increasingly common as compared to thicker multi-year ice. An ability to sense sea ice temperature and salinity properties, and particularly their variations within the ice itself, could also provide important new benefits for understanding ice formation and dissolution.The project is deploying a four channel ultra-wideband microwave radiometer observing from 0.5 to 2 GHz as part of the MOSAiC central observatory in order to acquire a unique dataset of ice thermal emissions and their variations with thickness and other ice properties. By measuring thermal emissions from sea ice at multiple frequencies, and frequencies lower than 1.4 GHz, more information on ice properties, and to greater depth, will be possible. The measurements acquired will further play an important role in bridging between the point in situ measurements to be acquired by other MOSAiC program investigators and the approximately 9 m x 26 m instrument footprint that will provide ice properties averaged over the "intermediate" scales associated with ice floes. The three year project includes instrument preparation and planning in year one, campaign participation in year 2 (including staffing by project personnel during MOSAiC legs I and II), and extensive data analysis in year 3.By advancing understanding of the spatial scaling between sea ice properties at point (in situ) and floe scales, the project will provide an important link to enable "sub-grid-scale" phenomena parameterization in sea ice forecast models. The time histories of thickness, salinity, and temperature acquired will also represent important datasets for characterizing the sea ice energy budget over relevant spatial scales. The advancement achieved in the use of passive microwave remote sensing will also provide new insights into the electromagnetic properties of sea ice for use in future development of new instrumentation and satellite observation methods.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.
北极的演变是我们星球未来的关键问题。 一个关键方面是了解大气、海洋和海冰的过程如何相互作用并影响北冰洋海冰的行为和分布。 作为北极气候研究多学科漂流观测站活动的一部分,该项目正在部署一台超宽带微波辐射计,以提高远程确定海冰厚度信息的能力。MOSAiC将RV Polarstern部署到北极浮冰中一年,可获得海冰的长期测量结果,再加上将获得的大量冰、海洋和大气原位测量结果,为海冰监测研究提供了最佳环境,从而能够建立更好的海冰演变模型。 这些模型对于推进北极系统科学和预测北极的未来至关重要。学生培训还将通过培养极地科学和观测方面的下一代研究人员来产生社会影响。北极的困难条件沿着空间异质性迫使促使人们通过卫星或机载平台进行远程地球观测。事实证明,遥感系统在监测海冰范围和覆盖率以及在较小程度上监测海冰厚度和类型方面十分有效。目前的L波段(1.4千兆赫)微波辐射计和激光高度计对0.5至2米范围内的冰厚的灵敏度有限,而与较厚的多年冰相比,这种情况越来越普遍。一种感知海冰温度和盐度特性的能力,特别是它们在冰本身内部的变化,也可以为理解冰的形成和溶解提供重要的新的好处。该项目正在部署一个四通道超-作为MOSAiC中央观测台的一部分,在0.5至2 GHz范围内进行观测的宽带微波辐射计,目的是获得冰热辐射及其随时间变化的独特数据集。冰的厚度和其他特性。通过以多个频率和低于1.4 GHz的频率测量海冰的热发射,将有可能获得有关冰特性和更大深度的更多信息。 所获得的测量结果将进一步发挥重要作用,将其他MOSAiC方案调查人员获得的现场点测量结果与大约9米x26米的仪器足迹联系起来,后者将提供与浮冰有关的“中间”尺度上的平均冰特性。该项目为期三年,包括第一年的仪器准备和规划,第二年的活动参与(包括MOSAiC第一和第二阶段项目人员配备),以及第3年的广泛数据分析。该项目将提供一个重要环节,使海冰预报模型能够对“次网格尺度”现象进行参数化。获得的厚度、盐度和温度的时间历史也将代表表征相关空间尺度上海冰能量收支的重要数据集。被动微波遥感技术的进步也将为海冰的电磁特性提供新的见解,用于未来开发新的仪器和卫星观测方法。该奖项反映了NSF的法定使命,并通过使用基金会的知识价值和更广泛的影响审查标准进行评估,被认为值得支持。
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)
Sea Ice Observations with 0.5-2 GHz Microwave Radiometry as part of the MOSAiC Campaign
作为 MOSAiC 活动的一部分,使用 0.5-2 GHz 微波辐射测量进行海冰观测
- DOI:
- 发表时间:2020
- 期刊:
- 影响因子:0
- 作者:Demir, Oguz;Andrews, Mark;Downs, Brandi;Johnson, Joel;Jezek, Ken;Kaleschke, Lars
- 通讯作者:Kaleschke, Lars
Measurements of 540-1740 MHz Brightness Temperatures of Sea Ice During the Winter of the MOSAiC Campaign
MOSAiC 运动冬季海冰 540-1740 MHz 亮度温度的测量
- DOI:10.1109/tgrs.2021.3105360
- 发表时间:2021
- 期刊:
- 影响因子:8.2
- 作者:Demir, Oguz;Johnson, Joel T.;Jezek, Kenneth C.;Andrews, Mark J.;Ayotte, Kenneth;Spreen, Gunnar;Hendricks, Stefan;Kaleschke, Lars;Oggier, Marc;Granskog, Mats A.
- 通讯作者:Granskog, Mats A.
Wideband Microwave Radiometry for the Retrieval of Arctic Sea Ice Physical Properties in the MOSAiC Campaign
MOSAiC 活动中用于反演北极海冰物理特性的宽带微波辐射测量
- DOI:
- 发表时间:2020
- 期刊:
- 影响因子:0
- 作者:Demir, O.;Andrews, M.;Ayotte, K.;Jezek, K. C.;Spreen, G.;Hendricks, S.;Stroeve, J.;Huntemann, M.;Tonboe, R. T.;Nandan, V.
- 通讯作者:Nandan, V.
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Joel Johnson其他文献
Paranoid delusions and cognitive impairment suggesting Fahr's disease.
偏执妄想和认知障碍提示法赫尔病。
- DOI:
- 发表时间:
2005 - 期刊:
- 影响因子:3.4
- 作者:
Shamim Shakibai;Joel Johnson;J. Bourgeois - 通讯作者:
J. Bourgeois
A 'KEYSTONE' PROJECT
- DOI:
- 发表时间:
2009 - 期刊:
- 影响因子:0
- 作者:
Joel Johnson - 通讯作者:
Joel Johnson
The Mars Science Laboratory Organic Check Material
火星科学实验室有机检查材料
- DOI:
10.1007/s11214-012-9893-1 - 发表时间:
2012 - 期刊:
- 影响因子:10.3
- 作者:
P. Conrad;J. Eigenbrode;M. V. D. Heydt;C. Mogensen;J. Canham;D. Harpold;Joel Johnson;T. Errigo;D. Glavin;P. Mahaffy - 通讯作者:
P. Mahaffy
Quantification and distribution of a <em>Tetragonula carbonaria</em> swarm (Hymenoptera: Apidae)
- DOI:
10.1016/j.aspen.2020.03.004 - 发表时间:
2020-06-01 - 期刊:
- 影响因子:
- 作者:
Joel Johnson - 通讯作者:
Joel Johnson
The Distributional Effects of Recent Changes to Maine’s Tax System
缅因州税收制度近期变化的分配效应
- DOI:
10.53558/kpiw1476 - 发表时间:
2013 - 期刊:
- 影响因子:0
- 作者:
Joel Johnson - 通讯作者:
Joel Johnson
Joel Johnson的其他文献
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{{ truncateString('Joel Johnson', 18)}}的其他基金
Collaborative Research: SWIFT: Facilitating Novel Modalities for Spectrum Sharing between Earth-Observing Microwave Radiometers and Commercial Users
合作研究:SWIFT:促进地球观测微波辐射计和商业用户之间频谱共享的新模式
- 批准号:
2229103 - 财政年份:2023
- 资助金额:
$ 52.6万 - 项目类别:
Standard Grant
Collaborative Research: Reading lithology from topography: How rock properties influence landscape form and evolution in the Guadalupe Mountains, TX and NM
合作研究:从地形中解读岩性:岩石特性如何影响德克萨斯州和新墨西哥州瓜达卢佩山脉的景观形态和演化
- 批准号:
1918351 - 财政年份:2019
- 资助金额:
$ 52.6万 - 项目类别:
Standard Grant
Achieving Efficient Spectrum Usage in Active and Passive Sensing Through a Market-Based Approach
通过基于市场的方法实现主动和被动传感中的频谱高效利用
- 批准号:
1247840 - 财政年份:2012
- 资助金额:
$ 52.6万 - 项目类别:
Standard Grant
Quantifying the coevolution of bedload transport and bed topography in mountain rivers: field and flume experiments using smartrocks
量化山区河流底质输送和河床地形的协同演化:使用 smartrocks 进行现场和水槽实验
- 批准号:
1053508 - 财政年份:2011
- 资助金额:
$ 52.6万 - 项目类别:
Standard Grant
Collaborative Research: Modeling and monitoring of landscape evolution along a climate gradient: Kohala Peninsula, Hawaii
合作研究:沿气候梯度模拟和监测景观演化:夏威夷科哈拉半岛
- 批准号:
1024982 - 财政年份:2010
- 资助金额:
$ 52.6万 - 项目类别:
Continuing Grant
CAREER: Surface Scattering Effects in Mine Detection and Remote Sensing Systems
职业:地雷探测和遥感系统中的表面散射效应
- 批准号:
9701678 - 财政年份:1997
- 资助金额:
$ 52.6万 - 项目类别:
Standard Grant
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Interaction of Sound with Sea-Ice for Improved Arctic Monitoring: Measurements and Models
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