EAGER: Development of a portable air-water flux system for methane

EAGER:开发便携式甲烷空气-水通量系统

基本信息

  • 批准号:
    1139203
  • 负责人:
  • 金额:
    $ 29.94万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2011
  • 资助国家:
    美国
  • 起止时间:
    2011-07-15 至 2014-06-30
  • 项目状态:
    已结题

项目摘要

A significant unknown in our understanding of climate change and the chemical state of the ocean involves oceanic methane (CH4). Numerous studies have conducted measurements of the sea-air flux of methane. These studies were conducted primarily to assess the extent to which the massive reservoir of methane in ocean sediments is contributing to the atmospheric greenhouse gas budget. Most of these studies have relied on collecting discrete surface water samples and historic measurements of atmospheric methane concentration and meteorological data. This EAGER seeks to to design and test a small portable unit for assessing the sea-air flux of methane in natural water systems including the ocean, estuaries, and lakes. This instrument is based on the small footprint design of the pCO2 systems developed for use on volunteer observing ships and research vessels and described by Pierrot et al. [2009]. One of the modifications to the pCO2 system design will be the simultaneous monitoring of both the air and the recirculated headspace from the equilibrator rather than alternating the analysis and losing time to flushing out the cells. Broader ImpactsThe potential benefit to ocean community of having an accurate quantification of methane source strengths is important to future climate modeling. A graduate student from an underrepresented group in STEM fields will be trained during the development and field testing of this new instrument.
在我们对气候变化和海洋化学状态的理解中,一个重要的未知因素与海洋甲烷(CH4)有关。许多研究已经对甲烷的海-气通量进行了测量。进行这些研究的主要目的是评估海洋沉积物中大量储存的甲烷对大气温室气体收支的贡献程度。这些研究大多依赖于收集离散的地表水样本以及大气甲烷浓度的历史测量和气象数据。这个热切的人试图设计和测试一种小型便携式装置,用于评估包括海洋、河口和湖泊在内的自然水系统中甲烷的海-气通量。该仪器基于为志愿观察船和科考船开发的二氧化碳分压系统的小占地设计,皮埃罗等人对此进行了描述。[2009]。PCO2系统设计的改进之一将是同时监测平衡器的空气和再循环顶空,而不是交替进行分析和浪费时间冲洗电池。更广泛的影响对海洋界的潜在好处是准确量化甲烷源强度,这对未来的气候模拟很重要。在这一新仪器的开发和实地测试期间,将对STEM领域代表性不足群体的一名研究生进行培训。

项目成果

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Shari Yvon-Lewis其他文献

Shari Yvon-Lewis的其他文献

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{{ truncateString('Shari Yvon-Lewis', 18)}}的其他基金

Methyl Bromide and Selected Halocarbons: Response of the Ocean to the Montreal Protocol and Subsequent Amendments
甲基溴和特定卤代烃:海洋对《蒙特利尔议定书》及其后续修正案的反应
  • 批准号:
    0927874
  • 财政年份:
    2009
  • 资助金额:
    $ 29.94万
  • 项目类别:
    Standard Grant

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