Acquisition and Use of 222Rn Measurements in Development and Validation of a Global Transport Model

222Rn 测量值在全球传输模型开发和验证中的获取和使用

• 批准号: 9532006
• 负责人: Mark Kritz
• 金额: $ 18.53万
• 依托单位: SUNY at Albany
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-07-01 至 2000-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9532006&HistoricalAwards=false
• 关键词: Acquisition; Use; 222Rn; Measurements; Development

Abstract ATM-9532006 Kritz, Mark A., State University of New York-Albany Title: Acquisition and Use of 222Rn Measurements in the Development and Validation of a Global Transport Model The primary objective of this program is to obtain and use a set of free tropospheric radon (222Rn) measurements in the development and validation of an off-line global 3-D model under development at the Climate and Global Dynamics Group at the National Center for Atmospheric Research. To this end the PI will work interactively with members of the NCAR group on questions of transport parameterization and sub-grid scale processes, flight planning and sampling strategy, and the application of the results. There are also two secondary objectives: First in cooperation with Dr. Pieter Tans (NOAA/CMDL) Boulder) to acquire simultaneous CO, CO2, CH4 Measurements in the course of those flights, for use in model validation and to further our understanding of the global carbon budget. Second, by concentrating the flights in one season, to acquire a data set which will be useful in the development and validation of other regional and global models as well, such as 3-D GCM-based climate and chemical transport models. Measurements will be made aboard a NASA Lear 24 jet aircraft flying in the central and western United States, using a fast sampling system which the PI has flown aboard NASA C-141 and C-130 aircraft. The flight series will consist of five round trip flights between Moffett Field, CA and Minneapolis, MN (with a refueling stop in Colorado) and five local (offshore) flights out of Moffett Field, to be flown over a five week period in the summer of 1996. The sampling strategy for both the outbound and return flight will be similar, with vertical profiles obtained over specified locations in Colorado and Minnesota, and upper level observations made in the course of the flight legs between Moffett, Colorado and Minnesota locations. Present plans call for the outbound legs to be fl own on Tuesdays of the five successive weeks, and the returns on Thursday or Friday; however there is enough flexibility in the timing of the outbound and return legs to avoid possible problems due to aliasing, or recurrent synoptic situations. Vertical profiles in the vicinity of Moffett, and 200 miles offshore will be acquired on each of the offshore flights, to investigate modeling artifacts associated with boundary layer parameterization and continental edge effects. The PI will work with NCAR and other interested modeling groups in the application of the radon data, and with NOAA and others on the application of the trace constituent data set. The radon results will be archived and made available via anonymous ftp and "3.5 floppy discs. This research is important because it will provide valuable observations that are needed to test and evaluate atmospheric general circulation models that are being developed to include chemistry processes.

Kritz, Mark A.，纽约州立大学- albany标题：222Rn测量在全球运输模型的开发和验证中的获取和使用该计划的主要目标是获取和使用一套自由对流层氡（222Rn）测量数据，以开发和验证一个离线的全球三维模型，该模型正在由国家大气研究中心的气候和全球动力学小组开发。为此，PI将与NCAR小组的成员就运输参数化和子网格尺度过程、飞行计划和采样策略以及结果的应用等问题进行互动。还有两个次要目标：首先是与Pieter Tans博士（NOAA/CMDL） Boulder)合作，在这些飞行过程中同时获得CO、CO2、CH4的测量数据，用于模型验证并进一步了解全球碳预算。其次，通过将飞行集中在一个季节，获得一组数据，这些数据将有助于开发和验证其他区域和全球模型，例如基于三维gcm的气候和化学运输模型。测量将在美国中部和西部飞行的美国宇航局Lear 24喷气式飞机上进行，使用PI在美国宇航局C-141和C-130飞机上使用的快速采样系统。该系列飞行将包括从加利福尼亚州莫菲特机场到明尼苏达州明尼阿波利斯的五次往返飞行（在科罗拉多州加油）和从莫菲特机场出发的五次本地（离岸）飞行，将于1996年夏季在五周内飞行。出站和返程航班的采样策略将是相似的，在科罗拉多州和明尼苏达州的指定地点获得垂直剖面，并在莫菲特、科罗拉多州和明尼苏达州之间的飞行段过程中进行高层观测。按照目前的计划，出港航班在连续五个星期的星期二起飞，返程航班在星期四或星期五起飞；然而，在出站和返程的时间上有足够的灵活性，以避免由于混叠或反复出现的天气情况而可能出现的问题。Moffett附近和离岸200英里的垂直剖面将在每次海上飞行中获得，以研究与边界层参数化和大陆边缘效应相关的建模工件。PI将与NCAR和其他感兴趣的建模小组合作应用氡数据，并与NOAA和其他组织合作应用痕量成分数据集。氡结果将存档，并通过匿名ftp和“3.5软盘”提供。这项研究很重要，因为它将提供测试和评估正在开发的包括化学过程的大气环流模型所需的有价值的观测结果。