Development of a New Multi-Isotope Technique for Atmospheric Carbon Monoxide Studies
Development of a New Multi-Isotope Technique for Atmospheric Carbon Monoxide Studies
批准号:
9510665
负责人:
Mark Thiemens
金额:
$16.61万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1995
资助国家:
美国
项目状态:
已结题
起止时间:
1995-09-01 至 1998-08-31
中文摘要
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英文摘要
9510665 Thiemens The atmospheric carbon monoxide budget is poorly characterized at present. In particular, it appears that there are sources which are either underestimated or unrecognized. Carbon monoxide is a central species related to the oxidizing capacity of the lower atmosphere. New techniques for resolving the sources and transformation mechanisms of atmospheric carbon monoxide are needed. Recent measurements of the abundances of the stable isotopes 17O and 18O indicate anomalies in the isotopic composition of atmospheric carbon monoxide, which likely indicates a signature of atmospheric processes which alter the isotopic composition. Previous work on ozone, carbon dioxide, and nitrous oxide revealed the nature of the atmospheric processes causing such isotopic anomalies in these molecules. In this project, a collection apparatus will be constructed to measure the isotopic composition of carbon and oxygen in atmospheric carbon monoxide, with the goal of obtaining new information on its global atmospheric budget. Routine measurements will be initiated in conjunction with the ongoing isotopic analysis programs for carbon dioxide, nitrous oxide, and ozone, including measurements of the concentrations of all species. Future activities will include the analysis of samples taken by balloon and rocket instruments.
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Collaborative Research: EAGER--Novel Sampling and Isotopic Characterization of Upper Strato- to Mesospheric Photochemistry
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批准号:2204474
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项目类别:Standard Grant
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资助金额:$26.39万
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财政年份:2022
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负责人:Mark Thiemens
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依托单位:
NSF-BSF: A Coordinated Study of the Isotope effect in the Vacuum Ultraviolet Photodissociation of Astronomically Important Molecules: Implications for the Early Solar System
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批准号:2009959
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项目类别:Standard Grant
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资助金额:$47.82万
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财政年份:2020
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负责人:Mark Thiemens
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依托单位:
Heterogeneous and Photochemical Transformations on Aerosol Surfaces: Understanding the Link between Hydrogen Peroxide and Carbonates Using Carbon and Oxygen Triple Isotopes
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批准号:1259305
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项目类别:Continuing Grant
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资助金额:$43.73万
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财政年份:2013
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负责人:Mark Thiemens
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依托单位:
Understanding Atmospheric Sulfur Cycle using Triple Isotopes of Oxygen and Sulfur (ASCTIOS)
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批准号:0960594
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项目类别:Standard Grant
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资助金额:$36.8万
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财政年份:2010
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负责人:Mark Thiemens
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依托单位:
ETBC: Collaborative Research: "The Effect of Climate on the Terrestial Sulfur Cycle"
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批准号:0819977
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项目类别:Standard Grant
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资助金额:$27.5万
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财政年份:2008
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负责人:Mark Thiemens
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依托单位:
Collaborative Research: An Isotope MIF Study of Volcanic Events in Greenland Ice Cores
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批准号:0612422
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项目类别:Standard Grant
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资助金额:$0.0万
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财政年份:2006
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负责人:Mark Thiemens
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依托单位:
Scholarships for Quantitative and Interdisciplinary Science Majors
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批准号:0630922
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项目类别:Standard Grant
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资助金额:$49.91万
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财政年份:2006
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负责人:Mark Thiemens
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依托单位:
Collaborative Research: Multiple-isotope Analysis of Nitrate and Sulfate in the West Antarctic Ice Sheet Divide Ice Core
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批准号:0538520
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项目类别:Continuing Grant
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资助金额:$19.2万
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财政年份:2006
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负责人:Mark Thiemens
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依托单位:
Complete Isotopic Analysis of Aerosol Sulfate and Nitrate in Long-Term Samplings from the Tropical Atlantic
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批准号:0431483
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项目类别:Continuing Grant
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资助金额:$41.59万
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财政年份:2004
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负责人:Mark Thiemens
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依托单位:
Collaborative Research: Investigation Atomospheric Chemisty and Dynamics Through Oxygen and Sulfur Isotopes in Volcanic Sulfate from South Pole Ice Cores
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批准号:0338363
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项目类别:Standard Grant
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资助金额:$8.69万
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财政年份:2004
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负责人:Mark Thiemens
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依托单位:
U.S.-France Dissertation Enhancement: Variations in Dissociation Energies and Rates for Multiple NO2
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批准号:0129286
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项目类别:Standard Grant
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资助金额:$1.5万
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财政年份:2002
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负责人:Mark Thiemens
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依托单位:
U.S.-France Cooperative Research: Nitrogen and Sulfur Cycles in Antarctica Inferred from Concentration and Isotopic Measurements
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批准号:0128971
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项目类别:Standard Grant
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资助金额:$1.91万
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财政年份:2002
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负责人:Mark Thiemens
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依托单位:
South Pole Atmospheric Nitrate Isotopic Analysis (SPANIA)
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批准号:0125761
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项目类别:Standard Grant
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资助金额:$33.83万
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财政年份:2002
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负责人:Mark Thiemens
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依托单位:
Sulfur and Oxygen Isotopic Signatures for Sulfur Dioxide Oxidation Mechanisms
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批准号:0111714
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项目类别:Standard Grant
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资助金额:$30.0万
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财政年份:2001
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负责人:Mark Thiemens
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依托单位:
The Use of Oxygen Isotopes to Resolve the Tropospheric Ozone Budget
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批准号:9820999
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项目类别:Continuing Grant
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资助金额:$28.0万
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财政年份:1999
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负责人:Mark Thiemens
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依托单位:
The Measurement of Mass Independent Isotopic Compositions in Atmospheric Species as a New Index of Global Processes
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批准号:9711203
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项目类别:Continuing Grant
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资助金额:$35.0万
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财政年份:1997
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负责人:Mark Thiemens
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依托单位:
The Measurement of Mass Independent Isotopic Compositions in Atmospheric Species as a New Indice of Global Processes
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批准号:9321202
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项目类别:Standard Grant
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资助金额:$33.0万
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财政年份:1994
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负责人:Mark Thiemens
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依托单位:
High Precision Oxygen Isotope Ratio Measurements in Atmospherically Important Reactions and in Air Species
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批准号:9020462
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项目类别:Continuing Grant
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资助金额:$47.47万
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财政年份:1991
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负责人:Mark Thiemens
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依托单位:
The Study of Oxygen Isotopic Fractionation Mechanisms in Ozone Formation and Measurement of these ratios in air O2 at ultrahigh precision.
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批准号:8721051
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项目类别:Continuing Grant
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资助金额:$30.98万
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财政年份:1988
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负责人:Mark Thiemens
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依托单位:
The Study of Isotopic Fractionation Processes in Atmos- pherically Relevant Reactions and the Measurement of these Ratios in High Altitude Samples
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批准号:8515648
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项目类别:Continuing Grant
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资助金额:$17.6万
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财政年份:1986
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负责人:Mark Thiemens
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依托单位:
海外基金