Impact of Synoptic and Mesoscale Disturbances on the Beginning and End of the Summer Melt Season Over Sea Ice

天气和中尺度扰动对夏季海冰融化季节开始和结束的影响

基本信息

  • 批准号:
    0714053
  • 负责人:
  • 金额:
    $ 29.47万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2007
  • 资助国家:
    美国
  • 起止时间:
    2007-09-15 至 2010-08-31
  • 项目状态:
    已结题

项目摘要

Synoptic and mesoscale weather events are hypothesized to provide the forcing that determines the magnitude, and often the sign, of the Arctic pack-ice surface energy budget (SEB). This is believed to occur through their impacts on the macro and microphysical structure of clouds, and on the thermodynamic and kinematic atmospheric structure within and above the Arctic boundary layer. Furthermore, these weather events are hypothesized to affect the onset of the summer melt season through their wintertime cumulative impact on the pack ice thermal structure, to determine the intensity of the summer melt, and to trigger the climatologically important transitions at the beginning and end of the summer melt season.Funds are provided to use historical data sets to deduce the impact of individual disturbances on the atmospheric boundary layer (ABL), SEB, and the melt season transitions; to diagnose the processes by which these impacts occur; to perform case studies of synoptic/mesoscale events triggering a seasonal transition through diagnoses of a mesoscale model; and to test the impacts of wintertime synoptic/mesoscale warming events on the timing of the onset of the subsequent melt season using a 1-D snow and ice model forced with atmospheric observations.
天气学和中尺度天气事件被假设为决定北极浮冰表面能量收支(SEB)的大小和符号的强迫。据信,这是通过它们对云的宏观和微观物理结构以及对北极边界层内和上方的热力学和动力学大气结构的影响而发生的。此外,这些天气事件被假设为通过其对浮冰热结构的冬季累积影响来影响夏季融化季节的开始,以确定夏季融化的强度,并在夏季融化季节开始和结束时触发气候上重要的转变。提供资金使用历史数据集来推断个别扰动对大气边界层的影响(ABL)、SEB和融化季节转换;诊断这些影响发生的过程;通过中尺度模型的诊断对触发季节转换的天气/中尺度事件进行案例研究;并使用1-D冰雪模型强迫大气观测来测试冬季天气/中尺度变暖事件对随后融化季节开始时间的影响。

项目成果

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Ola P Persson其他文献

Ola P Persson的其他文献

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{{ truncateString('Ola P Persson', 18)}}的其他基金

Collaborative Research: Understanding and Modeling Key Arctic Cloud-ABL-Surface Processes and Interactions
合作研究:理解和建模关键的北极云-ABL-地表过程和相互作用
  • 批准号:
    1023366
  • 财政年份:
    2010
  • 资助金额:
    $ 29.47万
  • 项目类别:
    Standard Grant
IPY: Remote Sensing of the Macro and Microphysical Structure of Arctic Clouds During ASCOS
IPY:ASCOS期间北极云宏观和微观物理结构的遥感
  • 批准号:
    0732925
  • 财政年份:
    2007
  • 资助金额:
    $ 29.47万
  • 项目类别:
    Standard Grant
Collaborative Research: Improving Remotely Sensed Surface Fluxes Over Sea Ice
合作研究:改善海冰表面通量的遥感
  • 批准号:
    0612428
  • 财政年份:
    2007
  • 资助金额:
    $ 29.47万
  • 项目类别:
    Standard Grant
GCM-Scale Surface Fluxes and Flux Parameterizations Determined from SHEBA Observations and a Nested Mesoscale Model
根据 SHEBA 观测和嵌套中尺度模型确定的 GCM 尺度表面通量和通量参数化
  • 批准号:
    0084322
  • 财政年份:
    2000
  • 资助金额:
    $ 29.47万
  • 项目类别:
    Continuing Grant
Mid-Oceanic Wintertime Surface Fluxes and Atmospheric Boundary Layer Structure: Relationship to Cyclone Development and Evolution
冬季大洋中部地表通量和大气边界层结构:与气旋发展和演化的关系
  • 批准号:
    9727054
  • 财政年份:
    1998
  • 资助金额:
    $ 29.47万
  • 项目类别:
    Standard Grant
A Study of the Effect of a Time-Varying Moist Potential Vorticity on the Evolution of Conditional Symmetric Instability
时变湿位涡对条件对称不稳定性演化的影响研究
  • 批准号:
    9296025
  • 财政年份:
    1991
  • 资助金额:
    $ 29.47万
  • 项目类别:
    Continuing Grant

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合作研究:南大洋的天气和中尺度风暴及其对冰冻圈的影响
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High Plains Convection: Diurnally Varying Mesoscale-Synoptic Scale Interactions over Complex Terrain during the Mesoscale Predictability Experiment (MPEX)
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北美西部强降水:天气/中尺度强迫和年代际趋势
  • 批准号:
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合作研究:西非中尺度对流系统及其与天气环境的相互作用
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