Aerosol Pollution Impacts on Wintertime Orographic Precipitation

气溶胶污染对冬季地形降水的影响

基本信息

  • 批准号:
    1138896
  • 负责人:
  • 金额:
    $ 52.51万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2012
  • 资助国家:
    美国
  • 起止时间:
    2012-02-15 至 2016-01-31
  • 项目状态:
    已结题

项目摘要

This project seeks to increase understanding of potential influences of aerosol pollution on wintertime orographic precipitation and, by extension, water resources. Research will initially focus on the Rocky Mountains of Colorado, but will ultimately seek to understand potential generality of these results in other regions such as the Sierra Nevada. A key question to be addressed is whether there is a regime in which cloud base temperatures are warm enough so that increased aerosol pollution can lead to suppression of drizzle, corresponding increase in supercooled cloud liquid water content, and ultimately an enhancement (vs. suppression) of precipitation. The intellectual merit of this work rests in conducting carefully planned numerical studies utilizing the Colorado State University RAMS mesoscale model that will both capitalize on and extend prior observational work undertaken by the principal investigator and colleagues over the Park Range of Colorado, as well as other recent NSF and Department of Energy supported studies in this same region. These prior data will be used to refine estimates of the range of aerosol pollution transported into western Colorado, make improvements to microphysical representations within the RAMS model, evaluate the model's performance, and ultimately to make improved quantitative estimates of aerosol pollution impacts on winter-season total precipitation in Colorado. Tests examining sensitivity to cloud base temperature and evidence for the potential reversal of the sign of aerosol impacts on precipitation (viz. enhancement vs. suppression) may have particular relevance to warmer-based mountain ranges such as the Sierra Nevada range. Broader impacts will include graduate student education, enhanced capabilities for the RAMS model, and better understanding of intertwined demographic impacts on regional climate and best practices for management of snowpack-derived water supplies that are of key importance to growing populations bordering mountainous regions across the western U.S.
该项目旨在提高对气溶胶污染对冬季地形降水的潜在影响的认识,并进而对水资源产生影响。 研究最初将集中在科罗拉多的落基山脉,但最终将寻求了解这些结果在其他地区,如内华达州的潜在普遍性。 要解决的一个关键问题是,是否有一个制度,云底温度足够温暖,增加气溶胶污染可以导致抑制毛毛雨,相应的增加过冷云液态水含量,并最终增强(抑制)的降水。 这项工作的智力价值在于利用科罗拉多州立大学RAMS中尺度模型进行精心计划的数值研究,该模型将利用和扩展由主要研究者及其同事在科罗拉多公园山脉进行的先前观测工作,以及最近NSF和能源部在同一地区支持的其他研究。 这些先前的数据将被用来完善的范围内的气溶胶污染输送到西部科罗拉多的估计,改进RAMS模型内的微物理表示,评估模型的性能,并最终改进气溶胶污染的影响,在科罗拉多冬季总降水量的定量估计。 检验对云底温度敏感性的试验和气溶胶对降水影响的潜在反转迹象(即增强与抑制)的证据可能与诸如内华达州山脉等较温暖的山脉特别相关。 更广泛的影响将包括研究生教育,增强RAMS模型的能力,以及更好地了解人口对区域气候的相互交织的影响,以及管理积雪供水的最佳实践,这些对美国西部山区人口增长至关重要。

项目成果

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William Cotton其他文献

William Cotton的其他文献

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{{ truncateString('William Cotton', 18)}}的其他基金

Collaborative Research: Towards Further Understanding of Aerosol Pollution Impacts on Tropical Cyclones
合作研究:进一步了解气溶胶污染对热带气旋的影响
  • 批准号:
    1547752
  • 财政年份:
    2016
  • 资助金额:
    $ 52.51万
  • 项目类别:
    Continuing Grant
Potential Impacts of Aerosol Particles on Severe Storms and Mesoscale Convective Systems (MCSs)
气溶胶颗粒对强风暴和中尺度对流系统 (MCS) 的潜在影响
  • 批准号:
    1005041
  • 财政年份:
    2010
  • 资助金额:
    $ 52.51万
  • 项目类别:
    Standard Grant
Collaborative Research: Inhibition of Snowfall by Pollution Aerosols
合作研究:污染气溶胶抑制降雪
  • 批准号:
    0835421
  • 财政年份:
    2008
  • 资助金额:
    $ 52.51万
  • 项目类别:
    Continuing Grant
Simulations of Aerosol Influences on Severe Convective Storms
气溶胶对强对流风暴影响的模拟
  • 批准号:
    0638910
  • 财政年份:
    2007
  • 资助金额:
    $ 52.51万
  • 项目类别:
    Continuing Grant
Collaborative Research: Inhibition of Snowfall by Pollution Aerosols
合作研究:污染气溶胶抑制降雪
  • 批准号:
    0451439
  • 财政年份:
    2005
  • 资助金额:
    $ 52.51万
  • 项目类别:
    Continuing Grant
Aerosol/Boundary Layer Cloud Interactions--Simulations and Parameterization Testing
气溶胶/边界层云相互作用——模拟和参数化测试
  • 批准号:
    0526600
  • 财政年份:
    2005
  • 资助金额:
    $ 52.51万
  • 项目类别:
    Continuing Grant
Numerical Simulation and Analysis of Severe Storms and Mesoscale Convective Systems
强风暴和中尺度对流系统的数值模拟与分析
  • 批准号:
    0324324
  • 财政年份:
    2003
  • 资助金额:
    $ 52.51万
  • 项目类别:
    Continuing Grant
Urban Influences on Clouds, Precipitation and Lightning
城市对云、降水和闪电的影响
  • 批准号:
    0327652
  • 财政年份:
    2003
  • 资助金额:
    $ 52.51万
  • 项目类别:
    Continuing Grant
Development of Parameterizations of Aerosol/Cloud Interactions and Assessment of Their Potential Climatic Impacts
气溶胶/云相互作用参数化的发展及其潜在气候影响的评估
  • 批准号:
    0215367
  • 财政年份:
    2002
  • 资助金额:
    $ 52.51万
  • 项目类别:
    Continuing Grant
Numerical Simulation and Analysis of Mesoscale Convective Systems and Severe Storms
中尺度对流系统和强风暴的数值模拟与分析
  • 批准号:
    9900929
  • 财政年份:
    1999
  • 资助金额:
    $ 52.51万
  • 项目类别:
    Continuing Grant

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