Multiscale modelling of Earth and planetary atmospheres

地球和行星大气的多尺度建模

• 批准号: 6844-2006
• 负责人: McConnell, John
• 金额: $ 2.91万
• 依托单位: York University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2006
• 资助国家: 加拿大
• 起止时间: 2006-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=334544
• 关键词: Multiscale; modelling; Earth; planetary; atmospheres

We are using complex 3D models to forecast Martian weather and "air quality". By modifying the Canadian weather forecast model, GEM, we have a tool that can be used to study dynamics or weather on Mars and, because of the zoom capacity of GEM, we are also able to do mesoscale studies important for forecasting conditions for Mars landers such as Phoenix and other planned missions such as ESA's ExoMars mission. On the air quality side we will continue work already started on the chemistry of ozone in the lower atmosphere and CO and O in the thermosphere and compare with measurement from Mars Express and Mars Reconnaissance Orbiter. We will also initiate new dust studies that should improve our understanding or dust movement and water-ice cloud formation. We will also study changes in the atmosphere that result from condensation at the polar caps. The model will also be useful for design of future Canadian Mars atmospheric experiments. The numbers and type of extra-solar planets keeps growing as observational technology improves. We will continue our collaborative work with the Institut d'Astrophysique de Paris on hot Giant Jupiters found at distances from their stars even closer than Mercury is to the Sun and which orbit their stars in a few days. We are investigating how these planets might evolve into other type of planets such as Neptune or Uranus-like as their hydrogen escapes. Also the expectation that "ocean-planets" may have been observed invites exciting modelling challenges to study their evolution.        With the current suite of satellites and the advent of new satellites in the next 10 years ensures we will have a capacity to make important air quality measurements such as aerosols and ozone. Thus we are entering an era that might be described as "chemical weather forecasting". Thus it will be especially important for Canadian to have access to models of the type that we are developing that can both utilize the data for understanding sources and sinks of emissions and for forecasting.

我们正在使用复杂的3D模型来预测火星天气和“空气质量”。通过修改加拿大的天气预报模型GEM，我们有了一个可用于研究火星动力学或天气的工具，而且由于GEM的放大能力，我们还能够进行中尺度研究，这对于预测凤凰号等火星着陆器和欧空局的ExoMars使命等其他计划中的飞行任务的条件很重要。在空气质量方面，我们将继续研究低层大气中的臭氧化学以及热层中的CO和O，并与火星快车和火星侦察轨道器的测量结果进行比较。我们还将启动新的尘埃研究，以提高我们对尘埃运动和水冰云形成的理解。我们还将研究由极冠凝结引起的大气变化。该模型也将有助于设计未来的加拿大火星大气实验。随着观测技术的进步，太阳系外行星的数量和类型不断增加。我们将继续与巴黎天体物理学研究所合作，研究在距离恒星比水星离太阳更近的地方发现的热巨型彗星，这些彗星将在几天内绕恒星运行。我们正在研究这些行星如何演变成其他类型的行星，如海王星或天王星一样，因为它们的氢逃逸。此外，人们对“海洋行星”可能已经被观测到的期望也为研究它们的演化带来了令人兴奋的建模挑战。 随着目前的卫星套件和未来10年新卫星的出现，我们将有能力进行重要的空气质量测量，如气溶胶和臭氧。因此，我们正在进入一个可以被称为“化学天气预报”的时代。因此，对加拿大人来说，获得我们正在开发的那种既能利用数据了解排放源和吸收汇又能进行预测的模型将特别重要。