Collaborative Research: Using Measurements from the Columbia Plateau Eolian System to Improve Global-Scale Models of Mineral-Dust Aerosols

合作研究：利用哥伦比亚高原风成系统的测量来改进全球尺度的矿尘气溶胶模型

• 批准号: 0214508
• 负责人: Alan Busacca
• 金额: $ 31.15万
• 依托单位: Washington State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-08-01 至 2007-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0214508&HistoricalAwards=false
• 关键词: Collaborative; Research; Using; Measurements; Columbia

This award is to study a paired sand-silt eolian system on the Columbia Plateau, in order to better understand the sensitivity of mineral-dust aerosol emissions to changes in vegetation, soil moisture and topography. This information will be used to improve global dust model routines in general circulation models (GCM).Field work will be undertaken to characterize the history and variability of mineral-aerosol sources and chronology of dune and loess formation for the Columbia Plateau since the last glacial maximum (LGM). Information will be obtained on vegetation area and type, soil texture, soil moisture and topographic features that resulted in the observed downwind accumulations. Modeling will be used to improve the sensitivity of a global transport model used in general circulation models (GCM) of the Earth climate system.Atmospheric mineral aerosols are increasingly recognized as playing an important role in radiative and biogeochemical forcing of climate. The broader impacts of this proposed research center on documenting the evolution of an important eolian sequence within a well-constrained chronologic framework to better understand the processes responsible for and factors that effect mineral-aerosol emissions.

该奖项旨在研究哥伦比亚高原上成对的沙-粉风成系统，以便更好地了解矿物粉尘气溶胶排放对植被、土壤湿度和地形变化的敏感性。这些信息将用于改进一般环流模式（GCM）中的全球沙尘模式例程。将进行实地工作，以表征矿物气溶胶源的历史和变异性，以及自末次极大期以来哥伦比亚高原沙丘和黄土形成的年代学。将获得导致观测到的下风堆积的植被面积和类型、土壤质地、土壤湿度和地形特征的信息。模拟将用于提高地球气候系统一般环流模式（GCM）中使用的全球输送模式的灵敏度。大气矿物气溶胶在气候的辐射强迫和生物地球化学强迫中起着重要的作用。这个拟议的研究中心的更广泛的影响是在一个严格限制的时间框架内记录一个重要的风成序列的演变，以更好地了解影响矿物气溶胶排放的过程和因素。