Better boundary conditions for glacier and ice-sheet modelling
更好的冰川和冰盖建模边界条件
基本信息
- 批准号:RGPIN-2015-05722
- 负责人:
- 金额:$ 2.99万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Discovery Grants Program - Individual
- 财政年份:2019
- 资助国家:加拿大
- 起止时间:2019-01-01 至 2020-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Glaciers and ice sheets store two-thirds of Earth's freshwater and are currently contributing to rising sea levels. While these ice masses act as long-term integrators of climate, their internal dynamics can complicate their behaviour on the short timescales relevant to society. Fundamental to our ability to decipher the underlying causes of glacier and ice-sheet change, and therefore pre-requisite to its reliable future projection, are accurate "boundary conditions" for glacier and ice-sheet models. The motivation for the proposed research is therefore to inform models we use to make projections of glacier change through process-based studies at the glacier surface and bed, and where the glacier comes into contact with freshwater reservoirs. The specific objectives of the research program are to (1) evaluate the robustness of glacier mass-balance models to uncertainties in accumulation processes, (2) develop statistical models of subglacial processes at scales commensurate with ice-sheet models and (3) investigate the influence of glacier-freshwater interactions on glacier dynamics and retreat. A fourth cross-cutting objective is to develop statistically robust practices for model calibration and to quantify associated model uncertainties. Observational, computational and statistical methods will be combined to achieve the above objectives in a number of individual studies suitable for graduate-level research. These studies involve new field work in British Columbia and Yukon to measure meteorological quantities, glacier mass balance, subglacial variables and properties of ice-marginal lakes. This research program capitalizes on emergent collaborations with local and international colleagues, as well as a new collaboration based at SFU between statisticians and earth scientists. It also involves partnership with local industry to develop novel instrumentation for monitoring subglacial properties. Built into the program are training opportunities for 6 new graduate students, along with 2 undergraduates and 1 northern community member per year. The anticipated impact of the research program will be an improved ability to (1) accurately model regional glacier mass-balance, (2) implement realistic representations of subglacial processes in large-scale ice-sheet models and (3) include glacier-freshwater feedbacks in future assessments of glacier change. Collectively, the proposed research will advance our understanding of externally driven- versus internally forced glacier change, toward more confident interpretations of short-term glacier variations and improved future projections. These projections are broadly relevant to issues of Canada's water security, economic development and environmental resilience.*** **
冰川和冰盖储存了地球三分之二的淡水,目前正在导致海平面上升。虽然这些冰块扮演着气候的长期积分者的角色,但它们的内部动态可能会使它们在与社会相关的短时间尺度上的行为复杂化。冰川和冰盖模型的准确“边界条件”是我们破译冰川和冰盖变化根本原因的基础,因此也是其可靠的未来预测的先决条件。因此,拟议研究的动机是为我们用来通过对冰川表面和冰床以及冰川与淡水水库接触的地方进行基于过程的研究来预测冰川变化的模型提供信息。该研究计划的具体目标是:(1)评估冰川质量平衡模型对积累过程中不确定性的稳健性;(2)开发与冰盖模型相称的尺度上的冰下过程统计模型;(3)调查冰川-淡水相互作用对冰川动力学和冰川消退的影响。第四个贯穿各领域的目标是为模型校准制定统计上可靠的做法,并量化相关的模型不确定性。观察法、计算法和统计法将结合起来,在一些适合研究生水平研究的个别研究中实现上述目标。这些研究涉及不列颠哥伦比亚省和育空地区新的实地工作,以测量气象量、冰川物质平衡、冰下变量和冰缘湖泊的特性。这项研究计划利用了与当地和国际同事的紧急合作,以及在SFU统计学家和地球科学家之间的新合作。它还涉及与当地行业合作,开发用于监测冰层下特性的新型仪器。该计划包括每年6名新研究生、2名本科生和1名北方社区成员的培训机会。该研究计划的预期影响将是提高以下能力:(1)准确地模拟区域冰川质量平衡,(2)在大规模冰盖模型中实现冰下过程的真实表示,(3)在未来的冰川变化评估中包括冰川-淡水反馈。总的来说,拟议的研究将促进我们对外部驱动的冰川变化与内部强迫的冰川变化的理解,朝着更有信心地解释短期冰川变化和改进未来预测的方向发展。这些预测与加拿大的水安全、经济发展和环境适应能力等问题广泛相关。
项目成果
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Flowers, Gwenn的其他文献
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{{ truncateString('Flowers, Gwenn', 18)}}的其他基金
Terrestrial glacier hazards in a changing climate
气候变化中的陆地冰川危害
- 批准号:
RGPNS-2020-05025 - 财政年份:2022
- 资助金额:
$ 2.99万 - 项目类别:
Discovery Grants Program - Northern Research Supplement
Terrestrial glacier hazards in a changing climate
气候变化中的陆地冰川危害
- 批准号:
RGPIN-2020-05025 - 财政年份:2022
- 资助金额:
$ 2.99万 - 项目类别:
Discovery Grants Program - Individual
Terrestrial glacier hazards in a changing climate
气候变化中的陆地冰川危害
- 批准号:
RGPIN-2020-05025 - 财政年份:2021
- 资助金额:
$ 2.99万 - 项目类别:
Discovery Grants Program - Individual
Terrestrial glacier hazards in a changing climate
气候变化中的陆地冰川危害
- 批准号:
RGPNS-2020-05025 - 财政年份:2021
- 资助金额:
$ 2.99万 - 项目类别:
Discovery Grants Program - Northern Research Supplement
Terrestrial glacier hazards in a changing climate
气候变化中的陆地冰川危害
- 批准号:
RGPIN-2020-05025 - 财政年份:2020
- 资助金额:
$ 2.99万 - 项目类别:
Discovery Grants Program - Individual
Terrestrial glacier hazards in a changing climate
气候变化中的陆地冰川危害
- 批准号:
RGPNS-2020-05025 - 财政年份:2020
- 资助金额:
$ 2.99万 - 项目类别:
Discovery Grants Program - Northern Research Supplement
Observational constraints on glacier form and flow, southwest Yukon, Canada
加拿大育空地区西南部冰川形态和流量的观测限制
- 批准号:
316236-2015 - 财政年份:2019
- 资助金额:
$ 2.99万 - 项目类别:
Discovery Grants Program - Northern Research Supplement
Better boundary conditions for glacier and ice-sheet modelling
更好的冰川和冰盖建模边界条件
- 批准号:
RGPIN-2015-05722 - 财政年份:2018
- 资助金额:
$ 2.99万 - 项目类别:
Discovery Grants Program - Individual
Observational constraints on glacier form and flow, southwest Yukon, Canada
加拿大育空地区西南部冰川形态和流量的观测限制
- 批准号:
316236-2015 - 财政年份:2018
- 资助金额:
$ 2.99万 - 项目类别:
Discovery Grants Program - Northern Research Supplement
Better boundary conditions for glacier and ice-sheet modelling
更好的冰川和冰盖建模边界条件
- 批准号:
478041-2015 - 财政年份:2017
- 资助金额:
$ 2.99万 - 项目类别:
Discovery Grants Program - Accelerator Supplements
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