CEDAR Postdoc: Photo-Chemistry and Neutral-Plasma Coupling at Earth and Mars

CEDAR 博士后：地球和火星的光化学和中性等离子体耦合

• 批准号: 0334383
• 负责人: Michael Mendillo
• 金额: $ 16.06万
• 依托单位: Trustees of Boston University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-12-01 至 2005-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0334383&HistoricalAwards=false
• 关键词: CEDAR; Postdoc; Photo; Chemistry; Neutral

The investigators will study the photo-chemistry and neutral-plasma coupling ofEarth and Mars. The approach is to compare the ionospheres of Earth and Mars using data and theory in order to better understand the basic physical processes that are common to both. The objectives are to (1) test the predictions of simple photochemical equilibrium models for how peak electron densities in the ionospheres of Earth and Mars vary with solar flux, distance from the Sun, and solar zenith angle using standard terrestrial observations and Martian observations from the radio science experiment on the Mars Global Surveyor spacecraft; (2) study the effects of solar flares and coronal mass ejections on simultaneous observations of the terrestrial and Martian ionospheres to understand how Space Weather impacts these different environments; (3) examine the effects of waves and tides in the neutral atmosphere of Mars on the ionosphere, and then compare to predictions from models developed for Earth for ionosphere-neutral atmosphere coupling. Areas of weakness and potential improvement in the models will be identified. The research will improve understanding of ionospheric processes by testing predictions derived from terrestrial experience on simultaneous observations of the ionospheres of Earth and Mars. The coordination of terrestrial and Martian observations is a creative and original concept that will build links between the disciplines of planetary and terrestrial aeronomy. By studying the effects of solar changes on more than one planet, any shortfalls in models for how the terrestrial ionosphere responds to the Sun will be identified and areas for potential improvement highlighted. This will facilitate the separation of solar and anthropogenic impacts on the terrestrial atmosphere, a goal of the Global Change Program. Simultaneous studies of the effects of space weather on more than one planet will similarly benefit the National Space Weather Program. Since the physics governing ionospheric processes should be the same on Earth and beyond Earth, models based on terrestrial observations should be valid beyond Earth's ionosphere. These models will be tested, especially in the areas of solar variability and the effects of magnetic fields, by comparing solar-terrestrial interactions on Earth and Mars. Studies of waves and tides will address how ionospheres couple with lower altitudes and test if waves and tides are as important in coupling different atmospheric regions on Mars as they are on Earth.

研究人员将研究光化学和中性血浆耦合的牙科和火星。 该方法是使用数据和理论比较地球和火星的电离层，以便更好地了解两者共有的基本物理过程。 目的是（1）测试简单光化学平衡模型的预测，以使用太阳能通量，距太阳的距离以及太阳Zenith角度使用标准的地面观测和Martian观测值在Mars Global Global Global Surveriors of Mars Global Surveor SpaceCrapt上使用标准的地面观测和火星观测来测试峰值电子密度如何随太阳通量，与太阳的距离以及太阳Zenith角度变化； （2）研究太阳耀斑和冠状质量弹出对陆地和火星电离层同时观察的影响，以了解太空天气如何影响这些不同的环境； （3）检查火星中性气氛中的波和潮汐对电离层的影响，然后将其与为电离层中性大气耦合的地球开发的模型的预测进行比较。 将确定模型的弱点和潜在改善领域。 这项研究将通过测试从地球和火星电离层同时观察的陆地经验得出的预测来提高对电离层过程的理解。 陆地和火星观察的协调是一个创造性和原始的概念，它将在行星和陆地航空的学科之间建立联系。 通过研究太阳能变化对多个行星的影响，模型中的任何缺口对于陆地电离层如何响应太阳，并突出了潜在的改进区域。 这将促进太阳能和人为影响对陆地氛围的影响，这是全球变化计划的目标。 同时研究太空天气对一个以上星球的影响将同样受益于国家太空天气计划。 由于控制电离层过程的物理学在地球和地球之外应相同，因此基于陆地观测的模型在地球电离层之外应有效。 这些模型将进行测试，尤其是在太阳可变性和磁场的影响方面，通过比较地球和火星上的太阳 - 物质相互作用。 对波浪和潮汐的研究将解决电离层夫妇如何具有较低高度的夫妇，并测试波和潮汐是否在将火星上的不同大气区域耦合到地球上的不同大气区域同样重要。