A Long Baseline Investigation of Clouds, Haze and Methane Distributions on Titan

对土卫六上云、雾和甲烷分布的长期基线调查

基本信息

  • 批准号:
    0909137
  • 负责人:
  • 金额:
    $ 42.99万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2009
  • 资助国家:
    美国
  • 起止时间:
    2009-09-01 至 2012-08-31
  • 项目状态:
    已结题

项目摘要

AST-0909137YoungThis award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Saturn's largest moon, Titan, is perhaps the only other body in the solar system currently experiencing the familiar atmospheric processes of precipitation, liquid and aeolian erosion, and the formation and dissipation of smog-like haze. This project will resolve several outstanding questions about Titan, such as the source of the atmospheric methane (which should survive for tens of millions of years without being replenished), why clouds appear over specific latitude ranges at certain times, and how the haze migrates between north and south hemispheres.The project has five goals: 1) investigate whether localized sources of methane can be detected from maps of Titan; 2) characterize the conditions for methane condensation as a function of time, latitude and altitude; 3) compare the predictions of the Titan Regional Atmospheric Modeling System (TRAMS) with high-resolution image sequences of convective clouds; 4) investigate if there is such a phenomenon as "morning brightening", a diurnal asymmetry in the east/west limb brightnesses; 5) map the latitudinal and height distributions of haze from 1996 through 2007. The study applies constraints on the properties of Titan's atmosphere and its methane clouds which come from Cassini Spacecraft data, Hubble Space Telescope observations, and ground-based Keck images, interpreted in part with TRAMS. The analysis will include the construction of three-dimensional hemispherical maps of methane and haze profiles, the determination of temperature profiles from spectra obtained with the Cassini Composite Infrared Spectrometer, and a study of clouds in Cassini Imaging Science Subsystem image sequences to determine the scale and lifetime of convective cloud components.Because similar processes are operating on Earth, Titan is an important laboratory for investigating familiar processes like precipitation, erosion, and the properties of smog-like hazes. The project will also support summer undergraduate students at the University of Idaho who will assist and be trained in astronomical data processing. The work supports an additional postdoctoral scholar at the University of Maryland.
AST-0909137 Young该奖项是根据2009年美国复苏和再投资法案(公法111-5)资助的。土星最大的卫星土卫六可能是太阳系中唯一一个正在经历降水,液体和风成侵蚀以及烟雾状薄雾形成和消散的熟悉大气过程的天体。 该项目将解决有关土卫六的几个悬而未决的问题,例如大气中甲烷的来源(它应该存在数千万年而不被补充),为什么云会在某些特定的时间出现在特定的纬度范围内,以及烟雾如何在南北半球之间迁移。该项目有五个目标:1)调查是否可以从土卫六的地图上检测到局部的甲烷来源; 2)描述甲烷凝结条件与时间、纬度和高度的函数关系; 3)将泰坦区域大气模拟系统(TRAMS)的预测与对流云的高分辨率图像序列进行比较; 4)调查是否存在“早晨变亮”等现象,即东/西边缘亮度的昼夜不对称; 5)绘制1996年至2007年烟霞的纬度和高度分布图。 该研究对土卫六的大气层及其甲烷云的性质进行了限制,这些甲烷云来自卡西尼号航天器数据,哈勃太空望远镜观测和地面凯克图像,部分用TRAMS进行了解释。 分析将包括构建甲烷和霾廓线的三维半球形地图,根据卡西尼复合红外光谱仪获得的光谱确定温度廓线,并研究卡西尼成像科学子系统图像序列中的云,以确定对流云成分的规模和寿命。土卫六是一个重要的实验室,用于研究降水、侵蚀和烟雾状薄雾的性质等熟悉的过程。 该项目还将支持爱达荷州大学的暑期本科生,他们将协助并接受天文数据处理方面的培训。 这项工作支持了马里兰州大学的一名博士后学者。

项目成果

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Eliot Young其他文献

The normal vectorcardiogram. I
  • DOI:
    10.1016/s0002-8703(56)80007-0
  • 发表时间:
    1956-05-01
  • 期刊:
  • 影响因子:
  • 作者:
    Eliot Young;Louis Wolff;Judith Chatfield
  • 通讯作者:
    Judith Chatfield
Venus nightside infrared spectroscopic study around the 2.3-μm CO2 atmospheric window using IRTF/SpeX data in Jan-Feb 2017
使用 2017 年 1 月至 2 月 IRTF/SpeX 数据对 2.3 μm CO2 大气窗口周围的金星夜间红外光谱进行研究
  • DOI:
  • 发表时间:
    2017
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Yeon Joo Lee;Hideo Sagawa;Takao M Sato;Toru Kouyama;Javier Peralta;Eliot Young;Emmanuel Marcq;Shigeto Watanabe;Masataka Imai;Takeshi Imamura;Takehiko Satoh;Masato Nakamura
  • 通讯作者:
    Masato Nakamura
Electrocardiographic, arteriographic and ventriculographic correlations in transmural myocardial infarction.
透壁性心肌梗死的心电图、动脉造影和心室造影相关性。
  • DOI:
  • 发表时间:
    1973
  • 期刊:
  • 影响因子:
    2.8
  • 作者:
    Richard A. Williams;Peter F. Cohn;P. Vokonas;Eliot Young;Michael V. Herman;Richard Gorlin
  • 通讯作者:
    Richard Gorlin

Eliot Young的其他文献

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{{ truncateString('Eliot Young', 18)}}的其他基金

Haze formation on Pluto in the context of the solar cycle
太阳周期背景下冥王星上雾霾的形成
  • 批准号:
    1911086
  • 财政年份:
    2019
  • 资助金额:
    $ 42.99万
  • 项目类别:
    Standard Grant
Occultations by Pluto, Triton and Large Trans-Neptunian Objects
冥王星、海卫一和大型海王星天体的掩星
  • 批准号:
    1616115
  • 财政年份:
    2016
  • 资助金额:
    $ 42.99万
  • 项目类别:
    Continuing Grant
Titan from Many Angles: 3D Mapping of Titan's Methane and Haze Distributions and Surface Spectra
多个角度的泰坦:泰坦甲烷和雾霾分布以及表面光谱的 3D 测绘
  • 批准号:
    1518226
  • 财政年份:
    2015
  • 资助金额:
    $ 42.99万
  • 项目类别:
    Standard Grant
Development of Portable High-Speed Telescopes and Cameras for Studying Solar System Objects During Stellar Occultations
开发用于研究恒星掩星期间太阳系天体的便携式高速望远镜和相机
  • 批准号:
    0321338
  • 财政年份:
    2003
  • 资助金额:
    $ 42.99万
  • 项目类别:
    Standard Grant
Titan's Atmosphere in the Pre-Cassini Decade: Establishing Long-Term Behavior from HST and Ground-Based/AO Observations
卡西尼号之前十年的土卫六大气层:根据 HST 和地面/AO 观测建立长期行为
  • 批准号:
    0206390
  • 财政年份:
    2002
  • 资助金额:
    $ 42.99万
  • 项目类别:
    Standard Grant
High Spatial Resolution Observations of Titan During an Occultation
掩星期间土卫六的高空间分辨率观测
  • 批准号:
    0123509
  • 财政年份:
    2001
  • 资助金额:
    $ 42.99万
  • 项目类别:
    Standard Grant
A New Search for Amino Acid Precursors on Icy Solar System Objects with Improved Spectroscopic Parameters
具有改进的光谱参数的冰太阳系物体上氨基酸前体的新搜索
  • 批准号:
    0085614
  • 财政年份:
    2000
  • 资助金额:
    $ 42.99万
  • 项目类别:
    Continuing Grant

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