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An Innovative Modeling Approach for Understanding Venus' Cloud-layer Dynamics, Polar Vortices, and the Influence of Waves

用于了解金星云层动力学、极涡和波浪影响的创新建模方法

基本信息

批准号：
1614762
负责人：
Helen Parish
金额：
$ 28.17万
依托单位：
University of California-Los Angeles
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2016
资助国家：
美国
起止时间：
2016-07-15 至 2019-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1614762&HistoricalAwards=false
关键词：
Innovative Modeling Approach Understanding Venus

项目摘要

Even though spacecraft have visited the planet Venus many times, little is understood about how Venus? middle and upper atmosphere and clouds move and interact. The recent spacecraft Venus Express provides new data to consider when modeling activity in the atmosphere. The investigators will model Venus' middle and upper atmosphere using special, rigorous computer programs. For this modeling, they set the base atmospheric level to be considered as the height above Venus' surface where clouds are observed. Different types of waves will be introduced as forces at this base atmospheric level to see how they drive the circulation in the atmosphere. The new measurements from Venus Express will guide and confirm the computer modeling, making more realistic models of Venus' middle and upper atmosphere. The results of this modeling will be fed back to other scientists modeling the Earth?s atmosphere to understand climate change, thus benefiting the national interest. The investigators will also design classroom experiments related to planetary atmospheres for middle and high schools, and undergraduate and graduate college-level classes.The dynamics and circulation of the planet Venus' atmosphere at cloud heights and above are poorly understood. In this study, the principal investigator will employ an innovative approach to modeling the dynamics of Venus' atmosphere, using a computer code based on the Community Atmosphere Model (CAM). The lower boundary of the atmosphere to be modeled is defined to begin at the height where clouds are observed above Venus' surface. Dynamical calculations will focus on this cloud-level atmosphere. Different kinds of waves will be introduced, including tides, Rossby waves, and gravity waves, to effect forces at the lower boundary of the atmosphere. New measurements from the Venus Express spacecraft mission at cloud levels and above will guide and validate the atmospheric modeling. Venus' middle and upper atmosphere can then be modeled at locations in time and space where data have not yet been measured. Adaptations of the CAM computer code for the Earth?s atmosphere resulting from this study of Venus' atmosphere will be fed back to the Earth climate research community, benefiting the national interest in understanding climate change. The investigators will design a series of STEM-related practical experiments addressing the physics of planetary atmospheres for UCLA outreach middle and high schools, and for undergraduate and graduate university classes.

尽管航天器多次造访金星，但人们对金星如何造访却知之甚少。中层和高层大气与云层运动并相互作用。最近的金星快车号航天器提供了在模拟大气活动时需要考虑的新数据。研究人员将使用特殊、严格的计算机程序对金星的中层和高层大气进行建模。对于这个模型，他们将基础大气层设置为观察到云的金星表面上方的高度。将引入不同类型的波作为基本大气层的力，以了解它们如何驱动大气中的循环。金星快车的新测量结果将指导和确认计算机建模，制作更真实的金星中层和高层大气模型。该建模的结果将反馈给其他对地球大气进行建模的科学家，以了解气候变化，从而有利于国家利益。研究人员还将为初中和高中以及本科生和研究生的大学课程设计与行星大气相关的课堂实验。人们对金星大气在云层高度及以上的动态和循环知之甚少。在这项研究中，首席研究员将采用一种创新方法，使用基于社区大气模型（CAM）的计算机代码来模拟金星大气的动力学。要建模的大气的下边界被定义为从金星表面上方观察到的云的高度开始。动力学计算将集中在这种云层大气上。将引入不同类型的波，包括潮汐、罗斯贝波和重力波，以影响大气下边界的力。金星快车航天器任务在云层及以上的新测量结果将指导和验证大气模型。然后可以在尚未测量数据的时间和空间位置对金星的中层和高层大气进行建模。金星大气层研究产生的针对地球大气层的 CAM 计算机代码的改编将反馈给地球气候研究界，有利于国家了解气候变化。研究人员将为加州大学洛杉矶分校的初中和高中以及本科生和研究生课程设计一系列与 STEM 相关的实践实验，解决行星大气物理问题。