Physical, Chemical, and Optical Properties of Snow: Impacts on Ocean-Atmosphere-Sea Ice-Snowpack Interactions (OASIS) and Sensitivity to Climate Change
Physical, Chemical, and Optical Properties of Snow: Impacts on Ocean-Atmosphere-Sea Ice-Snowpack Interactions (OASIS) and Sensitivity to Climate Change
批准号:
0807702
负责人:
Cort Anastasio
金额:
$54.34万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
2008
资助国家:
美国
项目状态:
已结题
起止时间:
2008-09-01 至 2012-08-31
中文摘要
加州大学戴维斯分校(UCD)的研究人员将与其他科学家合作,参加2009年在AK州巴罗举行的海洋-大气-海洋冰雪(OASIS)实地考察活动。该项目有三个主要目标,以雪的光化学为中心:1)测量雪颗粒中/表面可溶性物质的光吸收量,包括过氧化氢(H2O2)、硝酸盐、亚硝酸盐和未知的(可能是有机的)发色团。2)测量雪的物理、化学和光学特性。3)综合这些结果表征有机发色团对雪中光吸收的贡献,确定影响雪中光通量和光吸收的物理化学因素,研究雪光化学对雪和边界层组成的影响,并建立雪光化学模型。UCD团队还将协调OASIS实地活动。这将是首次研究有机物种对雪颗粒内/上发色团的贡献,并可能导致我们对雪光化学及其对大气成分影响的理解取得重大进展。更广泛的影响包括:在实地活动期间通过实时网络摄像头进行外展;与美国和国际电视台协调报道巴罗的现场工作;本科生参与;为戴维斯附近一所乡村高中的学生提供教育推广;协调外地活动的数据存档;并在会议上主持OASIS 2009会议。
英文摘要
Researchers at the University of California, Davis (UCD) will collaborate with other scientists in the Ocean-Atmosphere-Sea Ice-Snowpack (OASIS) 2009 field campaign at Barrow, AK. This project has three main objectives, centered around the photochemistry of snow: 1) Measure the amount of light absorption by soluble species in/on snow grains, including hydrogen peroxide (H2O2), nitrate, nitrite, and unknown (presumably organic) chromophores. 2) Measure the physical, chemical, and optical properties of the snow. 3) Integrate these results to characterize the contributions of organic chromophores to light absorption in snow, determine the physical and chemical factors affecting light fluxes and light absorption in snow, examine the effects of snow photochemistry on snow and boundary layer composition, and model the snow photochemistry. The UCD team will also coordinate the OASIS field campaign. This would be among the first studies of the contributions of organic species to the pool of chromophores in/on snow grains, and could lead to significant advances in our understanding of snow photochemistry and its impacts on atmospheric composition.Broader impacts include: outreach via live web cams during the field campaign; coordination with U.S. and international TV stations to cover the Barrow field work; participation of undergraduate students; educational outreach to students at a rural high school near Davis; coordination of data archiving from the field campaign; and hosting OASIS 2009 sessions at conferences.
期刊论文(0)
专著(0)
科研奖励(0)
会议论文
Unraveling Nitrate Photochemistry in the Environment
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批准号:2305164
-
项目类别:Standard Grant
-
资助金额:$62.84万
-
财政年份:2023
-
负责人:Cort Anastasio
-
依托单位:
Formation of photo-oxidants and processing of organic species in aerosol liquid water
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批准号:2220307
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项目类别:Standard Grant
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资助金额:$81.63万
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财政年份:2022
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负责人:Cort Anastasio
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依托单位:
Collaborative Research: Multi-phase Sulfur and Nitrogen Chemistry in Air and Snow during Alaskan Layered Pollution and Chemical Analysis (ALPACA)
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批准号:2109011
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项目类别:Standard Grant
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资助金额:$61.35万
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财政年份:2021
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负责人:Cort Anastasio
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依托单位:
Environmental Photochemistry at the Air-Ice Interface
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批准号:1806210
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项目类别:Standard Grant
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资助金额:$60.0万
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财政年份:2018
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负责人:Cort Anastasio
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依托单位:
Phenol Reactions in Aqueous Particles as a Source of Secondary Organic Aerosol
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批准号:1649212
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项目类别:Continuing Grant
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资助金额:$80.09万
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财政年份:2017
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负责人:Cort Anastasio
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依托单位:
Photochemistry of solutes in/on water ice
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批准号:1214121
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项目类别:Continuing Grant
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资助金额:$45.19万
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财政年份:2012
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负责人:Cort Anastasio
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依托单位:
Quantifying nitrite and peroxynitrite formation from the photolysis of nitrate in/on ice
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批准号:1204169
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项目类别:Continuing Grant
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资助金额:$34.97万
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财政年份:2012
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负责人:Cort Anastasio
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依托单位:
Collaborative Research: Fog Drop Reactions of Green Leaf Volatiles as a Source of Secondary Organic Aerosols
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批准号:1105049
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项目类别:Standard Grant
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资助金额:$23.02万
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财政年份:2011
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负责人:Cort Anastasio
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依托单位:
Formation of Secondary Organic Aerosol by Aqueous-phase Reactions of Phenols
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批准号:1036675
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项目类别:Continuing Grant
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资助金额:$29.87万
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财政年份:2010
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负责人:Cort Anastasio
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依托单位:
Photochemical Formation and Destruction of Hydrogen Peroxide on Antarctic Snow Gains
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批准号:0636985
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项目类别:Standard Grant
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资助金额:$36.61万
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财政年份:2007
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负责人:Cort Anastasio
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依托单位:
Photochemical Formation of Oxidants and Destruction of Organic Compounds in the Snowpack at Summit, Greenland
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批准号:0455055
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项目类别:Standard Grant
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资助金额:$26.9万
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财政年份:2005
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负责人:Cort Anastasio
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依托单位:
Laboratory Studies of Photochemistry in Antarctic Snow and Ice
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批准号:0230288
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项目类别:Continuing Grant
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资助金额:$34.37万
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财政年份:2003
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负责人:Cort Anastasio
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依托单位:
Collaborative Research: Impact of Snow Photochemistry on Atmospheric Radical Concentrations at Summit, Greenland
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批准号:0221052
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项目类别:Continuing Grant
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资助金额:$20.34万
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财政年份:2002
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负责人:Cort Anastasio
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依托单位:
Investigation of Photochemical Tranformations within Snow and their Effect on Snow and Atmospheric Composition
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批准号:9907434
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项目类别:Continuing Grant
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资助金额:$21.5万
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财政年份:1999
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负责人:Cort Anastasio
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依托单位:
In situ Photo-Oxidation of Chloride and Bromide in Tropospheric Aerosol Particles
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批准号:9701995
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项目类别:Continuing Grant
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资助金额:$26.67万
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财政年份:1997
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负责人:Cort Anastasio
-
依托单位:
国内基金
海外基金
Chinese Journal of Chemical Engineering
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批准号:21224004
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项目类别:专项基金项目
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资助金额:20.0万元
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批准年份:2012
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负责人:廖叶华
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依托单位:
Chinese Journal of Chemical Engineering
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批准号:21024805
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项目类别:专项基金项目
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资助金额:20.0万元
-
批准年份:2010
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负责人:廖叶华
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依托单位: