Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 0806437 |
| The OASIS-2009 Field Mission: Studies of Photochemistry and Trace Gas Exchange in the Arctic in the Context of a Changing Climate | |
| John Orlando | |
| 主持机构 | University Corporation For Atmospheric Res |
| 开始日期 | 2008-09-01 |
| 结束日期 | 2011-08-31 |
| 资助经费 | 649725(USD) |
| 项目类别 | Standard Grant |
| 资助机构 | US-NSF（美国国家科学基金会） |
| 项目所属计划 | ANS-Arctic Natural Sciences, EMERGING TOPICS |
| 语种 | 英语 |
| 国家 | 美国 |
| 英文简介 | The OASIS (Ocean/Atmosphere/Sea Ice/Snowpack) program aims to determine the importance of chemical, physical and biological exchange processes on tropospheric chemistry, the cryosphere, and the marine environment, and their feedback mechanisms in the context of a changing climate. As part of OASIS 2009, an integrated suite of instruments will be deployed at Barrow, Alaska, that will allow for the most comprehensive study to date of exchange processes and their impact on the overlying atmosphere. The deployment will consist of measurements of key chemical species active in the Arctic boundary layer photochemistry, including HOx, NOx/NOy, O3, halocarbons, organics and aerosols, as well as driving environmental factors such as actinic radiation. The project will result in a detailed study of the complex photochemical interactions between the relevant chemical families during background conditions and during periods of elevated halogen activity, using the most comprehensive set of measurements obtained to date. The data will also significantly advance the understanding of the overall oxidative capacity of the Arctic troposphere, of surface ozone depletion events, and of the nature and importance of aerosol production in this region. In addition, parameterizations of the emissions of halogens and NOx will be incorporated into CAM-Chem (a global chemistry-transport model) for studies of regional- and hemispheric-scale air quality impacts, and the Community Climate System Model (CCSM) will be used to conduct some of the first studies of the impact of climate change on OASIS processes. A major initial focus will be on changing sea ice characteristics, and in particular first-year sea ice which has been shown to correlate with halogen activation. The Broader Impacts include the participation of at least one graduate student and one postdoctoral fellow, and will contribute to the educational experience for other University students participating in the mission. The project will also fully include two SOARS (Significant Opportunities in Atmospheric Research and Science) protégés and a Denver-area high school teacher in the field measurement program, and will take part in outreach activities in Barrow and nearby communities on the North Slope of Alaska. |
| 来源学科分类 | Geosciences |
| URL | https://www.nsf.gov/awardsearch/showAward?AWD_ID=0806437 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/342482 |
| 推荐引用方式 GB/T 7714 | John Orlando.The OASIS-2009 Field Mission: Studies of Photochemistry and Trace Gas Exchange in the Arctic in the Context of a Changing Climate.2008. |
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