MRI: Agro-combs: Development of a mid-infrared dual-comb spectrometer for the detection of agriculturally significant gases

MRI：农业梳：开发用于检测农业重要气体的中红外双梳光谱仪

• 批准号: 1726304
• 负责人: Brett DePaola
• 金额: $ 169.24万
• 依托单位: Kansas State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-01 至 2023-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1726304&HistoricalAwards=false
• 关键词: MRI; Agro; combs; Development; mid

An award is made to Kansas State University to support a team of world-class physicists and agronomists to develop a dual-comb laser spectroscopic system for the detection of agriculturally significant gases. This system is based on the Nobel-prize winning concept of the optical frequency comb and is hereby called an "agro-comb". The most critical agricultural challenge is to double crop production by 2050 to meet surging world food demand. To do so, plant, soil and environmental scientists need accurate data on the concentrations of multiple agriculturally significant gases at relevant time and spatial scales. Such data are indispensable for applications such as crop breeding, nutrient management, crop water use, and livestock gas emission monitoring. The agro-comb will support a collaborative group of interdisciplinary users from Kansas State University and throughout the United States and Canada. Broader impacts of this project include the training of young researchers in this highly interdisciplinary research area. Important societal outcomes also include potentially commercial technology which could widely influence precision agriculture management, breeding programs, and other areas. Project scientists will team up with existing University outreach programs to offer summer research opportunities to undergraduate students and hands-on activities for middle-school children, particularly girls. Furthermore, they will present related science to children throughout Kansas via a traveling lecture series, among other outreach activities.The agro-comb is a mid-infrared laser system for the simultaneous measurement of multiple trace gas concentrations with high sensitivity over a 10 m path. The intellectual merit of the research is the sensitive detection of agriculturally relevant gases in the field, with the unprecedented combination of speed, spectral width, and sensitivity that dual-comb spectroscopy offers. The agro-comb's broadband but discrete nature will permit the high-resolution detection of carbon dioxide and water, including forms that incorporate deuterium, carbon-13, and oxygen-16 isotopes, with a single open-path instrument. Such simultaneous measurements, never before possible, are key to understanding the carbon and water cycles by improving knowledge of photosynthesis, soil respiration and evaporation, and plant transpiration. These measurements can be made over individual sub-plots of different crop varieties, to expand the ability to connect a plant's traits to its genetic composition. The agro-comb will also be used to detect important gases such as methane, nitrous oxide, and ammonia, which can be used to monitor gaseous losses of nitrogen from soils and methane emissions from feedlots.

堪萨斯州立大学被授予一个奖项，以支持一个由世界级物理学家和农学家组成的团队开发双梳激光光谱系统，用于检测对农业具有重要意义的气体。该系统基于诺贝尔奖获得者光学频率梳的概念，因此被称为“农业梳子”。最关键的农业挑战是到2050年将作物产量翻一番，以满足不断增长的世界粮食需求。要做到这一点，植物、土壤和环境科学家需要有关时间和空间尺度上多种农业上重要气体浓度的准确数据。这些数据对于作物育种、养分管理、作物用水和牲畜气体排放监测等应用是必不可少的。农业梳子将支持来自堪萨斯州立大学以及整个美国和加拿大的跨学科用户的协作小组。该项目的更广泛影响包括在这一高度跨学科的研究领域培训年轻研究人员。重要的社会成果还包括潜在的商业技术，这些技术可能会广泛影响精准农业管理、育种计划和其他领域。项目科学家将与现有的大学外展项目合作，为本科生提供暑期研究机会，并为中学生，特别是女孩提供动手活动。此外，他们还将通过巡回演讲系列和其他外展活动向堪萨斯州的儿童介绍相关科学。农业梳子是一种中红外激光系统，用于在10米的路径上以高灵敏度同时测量多种痕量气体浓度。这项研究的智力价值是对田间农业相关气体的灵敏检测，以及双梳光谱提供的前所未有的速度、光谱宽度和灵敏度的组合。农用梳子的宽带但离散的性质将允许使用单一开放路径仪器对二氧化碳和水进行高分辨率检测，包括包含氢、碳-13和氧-16同位素的形式。这样的同步测量是通过提高对光合作用、土壤呼吸和蒸发以及植物蒸腾的了解来理解碳和水循环的关键，这是前所未有的。这些测量可以在不同作物品种的单独小区上进行，以扩大将植物的特征与其遗传组成联系起来的能力。农用梳子还将用于检测甲烷、一氧化二氮和氨等重要气体，这些气体可用于监测土壤中氮气的气态损失和饲养场的甲烷排放。

项目成果

Using Open-Path Dual-Comb Spectroscopy to Monitor Methane Emissions from Grazing Beef Cattle

使用开放路径双梳光谱监测放牧肉牛的甲烷排放

• 发表时间: 2023
• 期刊: Optica Publishing Group
• 作者: Morris, Lindsay C.;Weerasekara, Chinthaka;Malarich, Nathan;Giorgetta, Fabrizio R.;Herman, Daniel I.;Cossel, Kevin C.;Newbury, Nathan R.;Owensby, Clenton E.;Welch, Stephen M.;DePaola, Brett D.
• 通讯作者: DePaola, Brett D.

Measuring Field-Scale Nitrous Oxide Emissions Using the Eddy Covariance Technique

使用涡流协方差技术测量现场规模的一氧化二氮排放

• 发表时间: 2023
• 期刊: American Meteorological Society
• 作者: Weerasekara, C.

Simultaneous measurement of outdoor O2, CO2, and CH4 with a dual-comb spectrometer

使用双梳光谱仪同时测量室外 O2、CO2 和 CH4

• DOI: 10.1364/cleo_at.2022.am4m.6
• 发表时间: 2022
• 期刊: Conference on Lasers and Electrooptics
• 作者: Malarich, Nathan;Washburn, Brian R.;Cossel, Kevin;Giorgetta, Fabrizio;DePaola, Brett D.;Welch, Steven M.;Santos, Eduardo A.;Newbury, Nathan;Coddington
• 通讯作者: Coddington

A Novel Spectroscopic Method to Measure Agriculturally Significant Trace Gases

测量农业上重要的痕量气体的新型光谱方法

• 发表时间: 2023
• 期刊: American Meteorological Society
• 作者: Santos, Eduardo A.;Weerasekara, Chinthaka;Morris, Lindsay C.;Clenton E.;Welch, Stephen M.;DePaola, Brett D.;Coddington, Ian;Washburn, Brian R.
• 通讯作者: Washburn, Brian R.

Quantifying Methane Production at a Cattle Grazing Site using Open-Path Dual-Comb Spectroscopy

使用开放路径双梳光谱量化养牛场的甲烷产量

• DOI: 10.1364/cleo_at.2023.ath1i.6
• 发表时间: 2023
• 期刊: Optica Publishing Group
• 作者: Morris, Lindsay C.;Weerasekara, Chinthaka;Malarich, Nathan;Giorgetta, Fabrizio R.;Herman, Daniel I.;Cossel, Kevin C.;Newbury, Nathan R.;Owensby, Clenton E.;Welch, Stephen M.;DePaola, Brett D.
• 通讯作者: DePaola, Brett D.