Ocean circulations and exoplanet climates (

海洋环流和系外行星气候（

• 批准号: 2649828
• 金额: --
• 依托单位: University of East Anglia
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2649828
• 关键词: Ocean; circulations; exoplanet; climates

The science of extrasolar planets has matured since the first giant exoplanets were discovered in 1995, with potentially habitable terrestrial planets being discovered all the time. Oceans have a dominant impact on planetary climate, so understanding their effects are a necessary part of modelling terrestrial exoplanets in order to understand future observations. The immense heat capacity of oceans causes their surface temperature to respond slowly to changes in stellar heating. Furthermore, the oceanic circulation can transport huge amounts of heat energy from warm regions that receive more stellar radiation to cold regions that receive less.Self-consistent modelling of planetary climates requires the use of coupled atmosphere-ocean global circulation models, since oceans and atmospheres interact significantly through fluxes of heat, momentum and freshwater. While some research has been conducted on the range of potential atmospheres of planets, little has so far been conducted on quantifying the role of fundamental oceanic properties such as tides or the configuration continental boundaries. On Earth, tides are a major driver of mixing that forces the large-scale overturning circulation and associated oceanic heat transport. However, Earth is not necessarily a typical planet in terms of its tides. If potentially habitable planets have oceans, then ocean properties and behaviour cannot be assumed to be Earth-like.The aim of this PhD is to investigate the effects of fundamental oceanic properties on planetary climate using a coupled atmosphere-ocean global circulation model. You will examine the effects of tidal mixing and continental boundaries on the climates of three types of habitable zone orbits (G-star, binary and M-star) to determine how the ocean properties can impact planetary climate and affect the interpretation of future observations. You will join an active research group at UEA in meteorology, oceanography and climate.

自1995年发现了第一个巨型系外行星以来，其极性行星的科学已经成熟，并且一直发现潜在的可居住地球行星。海洋对行星气候具有主要的影响，因此了解它们的影响是建模地面系外行星的必要部分，以了解未来的观察结果。海洋的巨大热量导致其表面温度对恒星加热变化的反应缓慢。此外，海洋循环可以从温暖的地区传输大量的热能，这些热能获得更多的恒星辐射到较少的寒冷区域。由于海洋和大气通过热量，动量，动量和新鲜的潮流和新鲜的潮流，海洋和大气相互作用，因此需要使用耦合的气氛 - 近代全球循环模型，需要使用耦合的气氛 - 全球循环模型。尽管已经对行星潜在大气的范围进行了一些研究，但迄今为止，几乎没有进行量化基本海洋特性的作用，例如潮汐或构造大陆边界的作用。在地球上，潮汐是混合的主要驱动力，迫使大规模倾覆的循环和相关的海洋热运输。但是，就其潮汐而言，地球不一定是典型的星球。如果潜在的可居住的行星有海洋，则不能认为海洋性质和行为是地球的。您将检查潮汐混合和大陆边界对三种居住区轨道（G-Star，二元和M-Star）气候的影响，以确定海洋性能如何影响行星气候并影响对未来观察结果的解释。您将加入UEA在气象，海洋学和气候方面的活跃研究小组。